rtabmap_ros/guilib/src/ExportCloudsDialog.cpp

/*
Copyright (c) 2010-2016, Mathieu Labbe - IntRoLab - Universite de Sherbrooke
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of the Universite de Sherbrooke nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#include "ExportCloudsDialog.h"
#include "ui_exportCloudsDialog.h"

#include "rtabmap/gui/CloudViewer.h"
#include "TexturingState.h"
#include "rtabmap/utilite/ULogger.h"
#include "rtabmap/utilite/UConversion.h"
#include "rtabmap/utilite/UThread.h"
#include "rtabmap/utilite/UStl.h"
#include "rtabmap/utilite/UMath.h"

#include "rtabmap/core/util3d_filtering.h"
#include "rtabmap/core/util3d_surface.h"
#include "rtabmap/core/util3d_transforms.h"
#include "rtabmap/core/util3d.h"
#include "rtabmap/core/util2d.h"
#include "rtabmap/core/Graph.h"
#include "rtabmap/core/GainCompensator.h"
#include "rtabmap/core/clams/discrete_depth_distortion_model.h"
#include "rtabmap/core/DBDriver.h"

#include <pcl/conversions.h>
#include <pcl/io/pcd_io.h>
#include <pcl/io/ply_io.h>
#include <pcl/io/vtk_io.h>
#include <pcl/io/obj_io.h>
#include <pcl/pcl_config.h>
#include <pcl/surface/poisson.h>

#include <QPushButton>
#include <QDir>
#include <QFileInfo>
#include <QMessageBox>
#include <QFileDialog>
#include <QInputDialog>
#include <QDesktopWidget>

namespace rtabmap {

ExportCloudsDialog::ExportCloudsDialog(QWidget *parent) :
	QDialog(parent),
	_canceled(false),
	_compensator(0),
	_dbDriver(0)
{
	_ui = new Ui_ExportCloudsDialog();
	_ui->setupUi(this);

	connect(_ui->buttonBox->button(QDialogButtonBox::RestoreDefaults), SIGNAL(clicked()), this, SLOT(restoreDefaults()));

	restoreDefaults();
	_ui->comboBox_upsamplingMethod->setItemData(1, 0, Qt::UserRole - 1); // disable DISTINCT_CLOUD

	connect(_ui->checkBox_binary, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_normalKSearch, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->comboBox_pipeline, SIGNAL(currentIndexChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->comboBox_pipeline, SIGNAL(currentIndexChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->comboBox_meshingApproach, SIGNAL(currentIndexChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->comboBox_meshingApproach, SIGNAL(currentIndexChanged(int)), this, SLOT(updateReconstructionFlavor()));

	connect(_ui->checkBox_regenerate, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_regenerate, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->spinBox_decimation, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_maxDepth, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_minDepth, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_fillDepthHoles, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_fillDepthHolesError, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->lineEdit_roiRatios, SIGNAL(textChanged(const QString &)), this, SIGNAL(configChanged()));
	connect(_ui->lineEdit_distortionModel, SIGNAL(textChanged(const QString &)), this, SIGNAL(configChanged()));
	connect(_ui->toolButton_distortionModel, SIGNAL(clicked()), this, SLOT(selectDistortionModel()));

	connect(_ui->checkBox_bilateral, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_bilateral, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_bilateral_sigmaS, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_bilateral_sigmaR, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));

	connect(_ui->checkBox_filtering, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_filtering, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_filteringRadius, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_filteringMinNeighbors, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));

	connect(_ui->checkBox_assemble, SIGNAL(clicked(bool)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_assemble, SIGNAL(clicked(bool)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_voxelSize_assembled, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));

	connect(_ui->checkBox_subtraction, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_subtraction, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_subtractPointFilteringRadius, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_subtractPointFilteringAngle, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_subtractFilteringMinPts, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));

	connect(_ui->checkBox_smoothing, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_smoothing, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_mlsRadius, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_polygonialOrder, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->comboBox_upsamplingMethod, SIGNAL(currentIndexChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_sampleStep, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_randomPoints, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_dilationVoxelSize, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_dilationSteps, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	_ui->stackedWidget_upsampling->setCurrentIndex(_ui->comboBox_upsamplingMethod->currentIndex());
	connect(_ui->comboBox_upsamplingMethod, SIGNAL(currentIndexChanged(int)), _ui->stackedWidget_upsampling, SLOT(setCurrentIndex(int)));
	connect(_ui->comboBox_upsamplingMethod, SIGNAL(currentIndexChanged(int)), this, SLOT(updateMLSGrpVisibility()));

	connect(_ui->checkBox_gainCompensation, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_gainCompensation, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_gainRadius, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_gainOverlap, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_gainBeta, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_gainFull, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_textureBrightnessContrastRatioLow, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_textureBrightnessContrastRatioHigh, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_exposureFusion, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_blending, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->comboBox_blendingDecimation, SIGNAL(currentIndexChanged(int)), this, SIGNAL(configChanged()));

	connect(_ui->checkBox_meshing, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_meshing, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->checkBox_meshing, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_gp3Radius, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_gp3Mu, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_meshDecimationFactor, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_meshDecimationFactor, SIGNAL(valueChanged(double)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->spinBox_meshMaxPolygons, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_meshMaxPolygons, SIGNAL(valueChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_transferColorRadius, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_cleanMesh, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_mesh_minClusterSize, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_textureMapping, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_textureMapping, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->comboBox_meshingTextureFormat, SIGNAL(currentIndexChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->comboBox_meshingTextureSize, SIGNAL(currentIndexChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_meshingTextureMaxDistance, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_mesh_minTextureClusterSize, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->lineEdit_meshingTextureRoiRatios, SIGNAL(textChanged(const QString &)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_cameraFilter, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_cameraFilter, SIGNAL(stateChanged(int)), this, SLOT(updateReconstructionFlavor()));
	connect(_ui->doubleSpinBox_cameraFilterRadius, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_cameraFilterAngle, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));

	connect(_ui->checkBox_poisson_outputPolygons, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->checkBox_poisson_manifold, SIGNAL(stateChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_poisson_depth, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_poisson_iso, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_poisson_solver, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->spinBox_poisson_minDepth, SIGNAL(valueChanged(int)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_poisson_samples, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_poisson_pointWeight, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));
	connect(_ui->doubleSpinBox_poisson_scale, SIGNAL(valueChanged(double)), this, SIGNAL(configChanged()));

	_progressDialog = new ProgressDialog(this);
	_progressDialog->setVisible(false);
	_progressDialog->setAutoClose(true, 2);
	_progressDialog->setMinimumWidth(600);
	_progressDialog->setCancelButtonVisible(true);
	connect(_progressDialog, SIGNAL(canceled()), this, SLOT(cancel()));

#ifdef DISABLE_VTK
	_ui->doubleSpinBox_meshDecimationFactor->setEnabled(false);
	_ui->spinBox_meshMaxPolygons->setEnabled(false);
	_ui->label_meshDecimation->setEnabled(false);
	_ui->label_meshMaxPolygons->setEnabled(false);
#endif

#if CV_MAJOR_VERSION < 3
	_ui->checkBox_exposureFusion->setEnabled(false);
	_ui->checkBox_exposureFusion->setChecked(false);
	_ui->label_exposureFusion->setEnabled(false);
#endif
}

ExportCloudsDialog::~ExportCloudsDialog()
{
	delete _ui;
	if(_compensator)
	{
		delete _compensator;
	}
}

void ExportCloudsDialog::updateMLSGrpVisibility()
{
	_ui->groupBox->setVisible(_ui->comboBox_upsamplingMethod->currentIndex() == 0);
	_ui->groupBox_2->setVisible(_ui->comboBox_upsamplingMethod->currentIndex() == 1);
	_ui->groupBox_3->setVisible(_ui->comboBox_upsamplingMethod->currentIndex() == 2);
	_ui->groupBox_4->setVisible(_ui->comboBox_upsamplingMethod->currentIndex() == 3);
	_ui->groupBox_5->setVisible(_ui->comboBox_upsamplingMethod->currentIndex() == 4);
}

void ExportCloudsDialog::cancel()
{
	_canceled = true;
	_progressDialog->appendText(tr("Canceled!"));
}

void ExportCloudsDialog::saveSettings(QSettings & settings, const QString & group) const
{
	if(!group.isEmpty())
	{
		settings.beginGroup(group);
	}
	settings.setValue("pipeline", _ui->comboBox_pipeline->currentIndex());
	settings.setValue("binary", _ui->checkBox_binary->isChecked());
	settings.setValue("normals_k", _ui->spinBox_normalKSearch->value());

	settings.setValue("regenerate", _ui->checkBox_regenerate->isChecked());
	settings.setValue("regenerate_decimation", _ui->spinBox_decimation->value());
	settings.setValue("regenerate_max_depth", _ui->doubleSpinBox_maxDepth->value());
	settings.setValue("regenerate_min_depth", _ui->doubleSpinBox_minDepth->value());
	settings.setValue("regenerate_fill_size", _ui->spinBox_fillDepthHoles->value());
	settings.setValue("regenerate_fill_error", _ui->spinBox_fillDepthHolesError->value());
	settings.setValue("regenerate_roi", _ui->lineEdit_roiRatios->text());
	settings.setValue("regenerate_distortion_model", _ui->lineEdit_distortionModel->text());

	settings.setValue("bilateral", _ui->checkBox_bilateral->isChecked());
	settings.setValue("bilateral_sigma_s", _ui->doubleSpinBox_bilateral_sigmaS->value());
	settings.setValue("bilateral_sigma_r", _ui->doubleSpinBox_bilateral_sigmaR->value());

	settings.setValue("filtering", _ui->checkBox_filtering->isChecked());
	settings.setValue("filtering_radius", _ui->doubleSpinBox_filteringRadius->value());
	settings.setValue("filtering_min_neighbors", _ui->spinBox_filteringMinNeighbors->value());

	settings.setValue("assemble", _ui->checkBox_assemble->isChecked());
	settings.setValue("assemble_voxel",_ui->doubleSpinBox_voxelSize_assembled->value());

	settings.setValue("subtract",_ui->checkBox_subtraction->isChecked());
	settings.setValue("subtract_point_radius",_ui->doubleSpinBox_subtractPointFilteringRadius->value());
	settings.setValue("subtract_point_angle",_ui->doubleSpinBox_subtractPointFilteringAngle->value());
	settings.setValue("subtract_min_neighbors",_ui->spinBox_subtractFilteringMinPts->value());

	settings.setValue("mls", _ui->checkBox_smoothing->isChecked());
	settings.setValue("mls_radius", _ui->doubleSpinBox_mlsRadius->value());
	settings.setValue("mls_polygonial_order", _ui->spinBox_polygonialOrder->value());
	settings.setValue("mls_upsampling_method", _ui->comboBox_upsamplingMethod->currentIndex());
	settings.setValue("mls_upsampling_radius", _ui->doubleSpinBox_sampleRadius->value());
	settings.setValue("mls_upsampling_step", _ui->doubleSpinBox_sampleStep->value());
	settings.setValue("mls_point_density", _ui->spinBox_randomPoints->value());
	settings.setValue("mls_dilation_voxel_size", _ui->doubleSpinBox_dilationVoxelSize->value());
	settings.setValue("mls_dilation_iterations", _ui->spinBox_dilationSteps->value());

	settings.setValue("gain", _ui->checkBox_gainCompensation->isChecked());
	settings.setValue("gain_radius", _ui->doubleSpinBox_gainRadius->value());
	settings.setValue("gain_overlap", _ui->doubleSpinBox_gainOverlap->value());
	settings.setValue("gain_beta", _ui->doubleSpinBox_gainBeta->value());
	settings.setValue("gain_full", _ui->checkBox_gainFull->isChecked());

	settings.setValue("mesh", _ui->checkBox_meshing->isChecked());
	settings.setValue("mesh_radius", _ui->doubleSpinBox_gp3Radius->value());
	settings.setValue("mesh_mu", _ui->doubleSpinBox_gp3Mu->value());
	settings.setValue("mesh_decimation_factor", _ui->doubleSpinBox_meshDecimationFactor->value());
	settings.setValue("mesh_max_polygons", _ui->spinBox_meshMaxPolygons->value());
	settings.setValue("mesh_color_radius", _ui->doubleSpinBox_transferColorRadius->value());
	settings.setValue("mesh_clean", _ui->checkBox_cleanMesh->isChecked());
	settings.setValue("mesh_min_cluster_size", _ui->spinBox_mesh_minClusterSize->value());

	settings.setValue("mesh_dense_strategy", _ui->comboBox_meshingApproach->currentIndex());

	settings.setValue("mesh_texture", _ui->checkBox_textureMapping->isChecked());
	settings.setValue("mesh_textureFormat", _ui->comboBox_meshingTextureFormat->currentIndex());
	settings.setValue("mesh_textureSize", _ui->comboBox_meshingTextureSize->currentIndex());
	settings.setValue("mesh_textureMaxDistance", _ui->doubleSpinBox_meshingTextureMaxDistance->value());
	settings.setValue("mesh_textureMinCluster", _ui->spinBox_mesh_minTextureClusterSize->value());
	settings.setValue("mesh_textureRoiRatios", _ui->lineEdit_meshingTextureRoiRatios->text());
	settings.setValue("mesh_textureCameraFiltering", _ui->checkBox_cameraFilter->isChecked());
	settings.setValue("mesh_textureCameraFilteringRadius", _ui->doubleSpinBox_cameraFilterRadius->value());
	settings.setValue("mesh_textureCameraFilteringAngle", _ui->doubleSpinBox_cameraFilterAngle->value());
	settings.setValue("mesh_textureBrightnessConstrastRatioLow", _ui->spinBox_textureBrightnessContrastRatioLow->value());
	settings.setValue("mesh_textureBrightnessConstrastRatioHigh", _ui->spinBox_textureBrightnessContrastRatioHigh->value());
	settings.setValue("mesh_textureExposureFusion", _ui->checkBox_exposureFusion->isChecked());
	settings.setValue("mesh_textureBlending", _ui->checkBox_blending->isChecked());
	settings.setValue("mesh_textureBlendingDecimation", _ui->comboBox_blendingDecimation->currentIndex());


	settings.setValue("mesh_angle_tolerance", _ui->doubleSpinBox_mesh_angleTolerance->value());
	settings.setValue("mesh_quad", _ui->checkBox_mesh_quad->isChecked());
	settings.setValue("mesh_triangle_size", _ui->spinBox_mesh_triangleSize->value());

	settings.setValue("poisson_outputPolygons", _ui->checkBox_poisson_outputPolygons->isChecked());
	settings.setValue("poisson_manifold", _ui->checkBox_poisson_manifold->isChecked());
	settings.setValue("poisson_depth", _ui->spinBox_poisson_depth->value());
	settings.setValue("poisson_iso", _ui->spinBox_poisson_iso->value());
	settings.setValue("poisson_solver", _ui->spinBox_poisson_solver->value());
	settings.setValue("poisson_minDepth", _ui->spinBox_poisson_minDepth->value());
	settings.setValue("poisson_samples", _ui->doubleSpinBox_poisson_samples->value());
	settings.setValue("poisson_pointWeight", _ui->doubleSpinBox_poisson_pointWeight->value());
	settings.setValue("poisson_scale", _ui->doubleSpinBox_poisson_scale->value());

	if(!group.isEmpty())
	{
		settings.endGroup();
	}
}

void ExportCloudsDialog::loadSettings(QSettings & settings, const QString & group)
{
	if(!group.isEmpty())
	{
		settings.beginGroup(group);
	}

	_ui->comboBox_pipeline->setCurrentIndex(settings.value("pipeline", _ui->comboBox_pipeline->currentIndex()).toInt());
	_ui->checkBox_binary->setChecked(settings.value("binary", _ui->checkBox_binary->isChecked()).toBool());
	_ui->spinBox_normalKSearch->setValue(settings.value("normals_k", _ui->spinBox_normalKSearch->value()).toInt());

	_ui->checkBox_regenerate->setChecked(settings.value("regenerate", _ui->checkBox_regenerate->isChecked()).toBool());
	_ui->spinBox_decimation->setValue(settings.value("regenerate_decimation", _ui->spinBox_decimation->value()).toInt());
	_ui->doubleSpinBox_maxDepth->setValue(settings.value("regenerate_max_depth", _ui->doubleSpinBox_maxDepth->value()).toDouble());
	_ui->doubleSpinBox_minDepth->setValue(settings.value("regenerate_min_depth", _ui->doubleSpinBox_minDepth->value()).toDouble());
	_ui->spinBox_fillDepthHoles->setValue(settings.value("regenerate_fill_size", _ui->spinBox_fillDepthHoles->value()).toInt());
	_ui->spinBox_fillDepthHolesError->setValue(settings.value("regenerate_fill_error", _ui->spinBox_fillDepthHolesError->value()).toInt());
	_ui->lineEdit_roiRatios->setText(settings.value("regenerate_roi", _ui->lineEdit_roiRatios->text()).toString());
	_ui->lineEdit_distortionModel->setText(settings.value("regenerate_distortion_model", _ui->lineEdit_distortionModel->text()).toString());

	_ui->checkBox_bilateral->setChecked(settings.value("bilateral", _ui->checkBox_bilateral->isChecked()).toBool());
	_ui->doubleSpinBox_bilateral_sigmaS->setValue(settings.value("bilateral_sigma_s", _ui->doubleSpinBox_bilateral_sigmaS->value()).toDouble());
	_ui->doubleSpinBox_bilateral_sigmaR->setValue(settings.value("bilateral_sigma_r", _ui->doubleSpinBox_bilateral_sigmaR->value()).toDouble());

	_ui->checkBox_filtering->setChecked(settings.value("filtering", _ui->checkBox_filtering->isChecked()).toBool());
	_ui->doubleSpinBox_filteringRadius->setValue(settings.value("filtering_radius", _ui->doubleSpinBox_filteringRadius->value()).toDouble());
	_ui->spinBox_filteringMinNeighbors->setValue(settings.value("filtering_min_neighbors", _ui->spinBox_filteringMinNeighbors->value()).toInt());

	_ui->checkBox_assemble->setChecked(settings.value("assemble", _ui->checkBox_assemble->isChecked()).toBool());
	_ui->doubleSpinBox_voxelSize_assembled->setValue(settings.value("assemble_voxel", _ui->doubleSpinBox_voxelSize_assembled->value()).toDouble());

	_ui->checkBox_subtraction->setChecked(settings.value("subtract",_ui->checkBox_subtraction->isChecked()).toBool());
	_ui->doubleSpinBox_subtractPointFilteringRadius->setValue(settings.value("subtract_point_radius",_ui->doubleSpinBox_subtractPointFilteringRadius->value()).toDouble());
	_ui->doubleSpinBox_subtractPointFilteringAngle->setValue(settings.value("subtract_point_angle",_ui->doubleSpinBox_subtractPointFilteringAngle->value()).toDouble());
	_ui->spinBox_subtractFilteringMinPts->setValue(settings.value("subtract_min_neighbors",_ui->spinBox_subtractFilteringMinPts->value()).toInt());

	_ui->checkBox_smoothing->setChecked(settings.value("mls", _ui->checkBox_smoothing->isChecked()).toBool());
	_ui->doubleSpinBox_mlsRadius->setValue(settings.value("mls_radius", _ui->doubleSpinBox_mlsRadius->value()).toDouble());
	_ui->spinBox_polygonialOrder->setValue(settings.value("mls_polygonial_order", _ui->spinBox_polygonialOrder->value()).toInt());
	_ui->comboBox_upsamplingMethod->setCurrentIndex(settings.value("mls_upsampling_method", _ui->comboBox_upsamplingMethod->currentIndex()).toInt());
	_ui->doubleSpinBox_sampleRadius->setValue(settings.value("mls_upsampling_radius", _ui->doubleSpinBox_sampleRadius->value()).toDouble());
	_ui->doubleSpinBox_sampleStep->setValue(settings.value("mls_upsampling_step", _ui->doubleSpinBox_sampleStep->value()).toDouble());
	_ui->spinBox_randomPoints->setValue(settings.value("mls_point_density", _ui->spinBox_randomPoints->value()).toInt());
	_ui->doubleSpinBox_dilationVoxelSize->setValue(settings.value("mls_dilation_voxel_size", _ui->doubleSpinBox_dilationVoxelSize->value()).toDouble());
	_ui->spinBox_dilationSteps->setValue(settings.value("mls_dilation_iterations", _ui->spinBox_dilationSteps->value()).toInt());

	_ui->checkBox_gainCompensation->setChecked(settings.value("gain", _ui->checkBox_gainCompensation->isChecked()).toBool());
	_ui->doubleSpinBox_gainRadius->setValue(settings.value("gain_radius", _ui->doubleSpinBox_gainRadius->value()).toDouble());
	_ui->doubleSpinBox_gainOverlap->setValue(settings.value("gain_overlap", _ui->doubleSpinBox_gainOverlap->value()).toDouble());
	_ui->doubleSpinBox_gainBeta->setValue(settings.value("gain_beta", _ui->doubleSpinBox_gainBeta->value()).toDouble());
	_ui->checkBox_gainFull->setChecked(settings.value("gain_full", _ui->checkBox_gainFull->isChecked()).toBool());

	_ui->checkBox_meshing->setChecked(settings.value("mesh", _ui->checkBox_meshing->isChecked()).toBool());
	_ui->doubleSpinBox_gp3Radius->setValue(settings.value("mesh_radius", _ui->doubleSpinBox_gp3Radius->value()).toDouble());
	_ui->doubleSpinBox_gp3Mu->setValue(settings.value("mesh_mu", _ui->doubleSpinBox_gp3Mu->value()).toDouble());
	_ui->doubleSpinBox_meshDecimationFactor->setValue(settings.value("mesh_decimation_factor",_ui->doubleSpinBox_meshDecimationFactor->value()).toDouble());
	_ui->spinBox_meshMaxPolygons->setValue(settings.value("mesh_max_polygons",_ui->spinBox_meshMaxPolygons->value()).toDouble());
	_ui->doubleSpinBox_transferColorRadius->setValue(settings.value("mesh_color_radius",_ui->doubleSpinBox_transferColorRadius->value()).toDouble());
	_ui->checkBox_cleanMesh->setChecked(settings.value("mesh_clean",_ui->checkBox_cleanMesh->isChecked()).toBool());
	_ui->spinBox_mesh_minClusterSize->setValue(settings.value("mesh_min_cluster_size", _ui->spinBox_mesh_minClusterSize->value()).toInt());

	_ui->comboBox_meshingApproach->setCurrentIndex(settings.value("mesh_dense_strategy", _ui->comboBox_meshingApproach->currentIndex()).toInt());

	_ui->checkBox_textureMapping->setChecked(settings.value("mesh_texture", _ui->checkBox_textureMapping->isChecked()).toBool());
	_ui->comboBox_meshingTextureFormat->setCurrentIndex(settings.value("mesh_textureFormat", _ui->comboBox_meshingTextureFormat->currentIndex()).toInt());
	_ui->comboBox_meshingTextureSize->setCurrentIndex(settings.value("mesh_textureSize", _ui->comboBox_meshingTextureSize->currentIndex()).toInt());
	_ui->doubleSpinBox_meshingTextureMaxDistance->setValue(settings.value("mesh_textureMaxDistance", _ui->doubleSpinBox_meshingTextureMaxDistance->value()).toDouble());
	_ui->spinBox_mesh_minTextureClusterSize->setValue(settings.value("mesh_textureMinCluster", _ui->spinBox_mesh_minTextureClusterSize->value()).toDouble());
	_ui->lineEdit_meshingTextureRoiRatios->setText(settings.value("mesh_textureRoiRatios", _ui->lineEdit_meshingTextureRoiRatios->text()).toString());
	_ui->checkBox_cameraFilter->setChecked(settings.value("mesh_textureCameraFiltering", _ui->checkBox_cameraFilter->isChecked()).toBool());
	_ui->doubleSpinBox_cameraFilterRadius->setValue(settings.value("mesh_textureCameraFilteringRadius", _ui->doubleSpinBox_cameraFilterRadius->value()).toDouble());
	_ui->doubleSpinBox_cameraFilterAngle->setValue(settings.value("mesh_textureCameraFilteringAngle", _ui->doubleSpinBox_cameraFilterAngle->value()).toDouble());
	_ui->spinBox_textureBrightnessContrastRatioLow->setValue(settings.value("mesh_textureBrightnessConstrastRatioLow", _ui->spinBox_textureBrightnessContrastRatioLow->value()).toDouble());
	_ui->spinBox_textureBrightnessContrastRatioHigh->setValue(settings.value("mesh_textureBrightnessConstrastRatioHigh", _ui->spinBox_textureBrightnessContrastRatioHigh->value()).toDouble());
	if(_ui->checkBox_exposureFusion->isEnabled())
	{
		_ui->checkBox_exposureFusion->setChecked(settings.value("mesh_textureExposureFusion", _ui->checkBox_exposureFusion->isChecked()).toBool());
	}
	_ui->checkBox_blending->setChecked(settings.value("mesh_textureBlending", _ui->checkBox_blending->isChecked()).toBool());
	_ui->comboBox_blendingDecimation->setCurrentIndex(settings.value("mesh_textureBlendingDecimation", _ui->comboBox_blendingDecimation->currentIndex()).toInt());

	_ui->doubleSpinBox_mesh_angleTolerance->setValue(settings.value("mesh_angle_tolerance", _ui->doubleSpinBox_mesh_angleTolerance->value()).toDouble());
	_ui->checkBox_mesh_quad->setChecked(settings.value("mesh_quad", _ui->checkBox_mesh_quad->isChecked()).toBool());
	_ui->spinBox_mesh_triangleSize->setValue(settings.value("mesh_triangle_size", _ui->spinBox_mesh_triangleSize->value()).toInt());

	_ui->checkBox_poisson_outputPolygons->setChecked(settings.value("poisson_outputPolygons", _ui->checkBox_poisson_outputPolygons->isChecked()).toBool());
	_ui->checkBox_poisson_manifold->setChecked(settings.value("poisson_manifold", _ui->checkBox_poisson_manifold->isChecked()).toBool());
	_ui->spinBox_poisson_depth->setValue(settings.value("poisson_depth", _ui->spinBox_poisson_depth->value()).toInt());
	_ui->spinBox_poisson_iso->setValue(settings.value("poisson_iso", _ui->spinBox_poisson_iso->value()).toInt());
	_ui->spinBox_poisson_solver->setValue(settings.value("poisson_solver", _ui->spinBox_poisson_solver->value()).toInt());
	_ui->spinBox_poisson_minDepth->setValue(settings.value("poisson_minDepth", _ui->spinBox_poisson_minDepth->value()).toInt());
	_ui->doubleSpinBox_poisson_samples->setValue(settings.value("poisson_samples", _ui->doubleSpinBox_poisson_samples->value()).toDouble());
	_ui->doubleSpinBox_poisson_pointWeight->setValue(settings.value("poisson_pointWeight", _ui->doubleSpinBox_poisson_pointWeight->value()).toDouble());
	_ui->doubleSpinBox_poisson_scale->setValue(settings.value("poisson_scale", _ui->doubleSpinBox_poisson_scale->value()).toDouble());

	updateReconstructionFlavor();
	updateMLSGrpVisibility();

	if(!group.isEmpty())
	{
		settings.endGroup();
	}
}

void ExportCloudsDialog::restoreDefaults()
{
	_ui->comboBox_pipeline->setCurrentIndex(1);
	_ui->checkBox_binary->setChecked(true);
	_ui->spinBox_normalKSearch->setValue(20);

	_ui->checkBox_regenerate->setChecked(_dbDriver!=0?true:false);
	_ui->spinBox_decimation->setValue(1);
	_ui->doubleSpinBox_maxDepth->setValue(4);
	_ui->doubleSpinBox_minDepth->setValue(0);
	_ui->spinBox_fillDepthHoles->setValue(0);
	_ui->spinBox_fillDepthHolesError->setValue(2);
	_ui->lineEdit_roiRatios->setText("0.0 0.0 0.0 0.0");
	_ui->lineEdit_distortionModel->setText("");

	_ui->checkBox_bilateral->setChecked(false);
	_ui->doubleSpinBox_bilateral_sigmaS->setValue(10.0);
	_ui->doubleSpinBox_bilateral_sigmaR->setValue(0.1);

	_ui->checkBox_filtering->setChecked(false);
	_ui->doubleSpinBox_filteringRadius->setValue(0.02);
	_ui->spinBox_filteringMinNeighbors->setValue(2);

	_ui->checkBox_assemble->setChecked(true);
	_ui->doubleSpinBox_voxelSize_assembled->setValue(0.0);

	_ui->checkBox_subtraction->setChecked(false);
	_ui->doubleSpinBox_subtractPointFilteringRadius->setValue(0.02);
	_ui->doubleSpinBox_subtractPointFilteringAngle->setValue(0);
	_ui->spinBox_subtractFilteringMinPts->setValue(5);

	_ui->checkBox_smoothing->setChecked(false);
	_ui->doubleSpinBox_mlsRadius->setValue(0.04);
	_ui->spinBox_polygonialOrder->setValue(2);
	_ui->comboBox_upsamplingMethod->setCurrentIndex(0);
	_ui->doubleSpinBox_sampleRadius->setValue(0.01);
	_ui->doubleSpinBox_sampleStep->setValue(0.0);
	_ui->spinBox_randomPoints->setValue(0);
	_ui->doubleSpinBox_dilationVoxelSize->setValue(0.01);
	_ui->spinBox_dilationSteps->setValue(0);

	_ui->checkBox_gainCompensation->setChecked(false);
	_ui->doubleSpinBox_gainRadius->setValue(0.02);
	_ui->doubleSpinBox_gainOverlap->setValue(0.0);
	_ui->doubleSpinBox_gainBeta->setValue(10);
	_ui->checkBox_gainFull->setChecked(false);

	_ui->checkBox_meshing->setChecked(false);
	_ui->doubleSpinBox_gp3Radius->setValue(0.2);
	_ui->doubleSpinBox_gp3Mu->setValue(2.5);
	_ui->doubleSpinBox_meshDecimationFactor->setValue(0.0);
	_ui->spinBox_meshMaxPolygons->setValue(0);
	_ui->doubleSpinBox_transferColorRadius->setValue(0.025);
	_ui->checkBox_cleanMesh->setChecked(true);
	_ui->spinBox_mesh_minClusterSize->setValue(0);

	_ui->comboBox_meshingApproach->setCurrentIndex(1);

	_ui->checkBox_textureMapping->setChecked(false);
	_ui->comboBox_meshingTextureFormat->setCurrentIndex(0);
	_ui->comboBox_meshingTextureSize->setCurrentIndex(5); // 4096
	_ui->doubleSpinBox_meshingTextureMaxDistance->setValue(3.0);
	_ui->spinBox_mesh_minTextureClusterSize->setValue(50);
	_ui->lineEdit_meshingTextureRoiRatios->setText("");
	_ui->checkBox_cameraFilter->setChecked(false);
	_ui->doubleSpinBox_cameraFilterRadius->setValue(0.1);
	_ui->doubleSpinBox_cameraFilterAngle->setValue(30);
	_ui->spinBox_textureBrightnessContrastRatioLow->setValue(0);
	_ui->spinBox_textureBrightnessContrastRatioHigh->setValue(0);
	_ui->checkBox_exposureFusion->setChecked(false);
	_ui->checkBox_blending->setChecked(true);
	_ui->comboBox_blendingDecimation->setCurrentIndex(0);

	_ui->doubleSpinBox_mesh_angleTolerance->setValue(15.0);
	_ui->checkBox_mesh_quad->setChecked(false);
	_ui->spinBox_mesh_triangleSize->setValue(1);

	_ui->checkBox_poisson_outputPolygons->setChecked(false);
	_ui->checkBox_poisson_manifold->setChecked(true);
	_ui->spinBox_poisson_depth->setValue(9);
	_ui->spinBox_poisson_iso->setValue(8);
	_ui->spinBox_poisson_solver->setValue(8);
	_ui->spinBox_poisson_minDepth->setValue(5);
	_ui->doubleSpinBox_poisson_samples->setValue(1.0);
	_ui->doubleSpinBox_poisson_pointWeight->setValue(4.0);
	_ui->doubleSpinBox_poisson_scale->setValue(1.1);

	updateReconstructionFlavor();
	updateMLSGrpVisibility();

	this->update();
}

void ExportCloudsDialog::updateReconstructionFlavor()
{
	_ui->checkBox_smoothing->setVisible(_ui->comboBox_pipeline->currentIndex() == 1);
	_ui->checkBox_smoothing->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
	_ui->label_denseReconstruction->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
#ifndef DISABLE_VTK
	_ui->doubleSpinBox_meshDecimationFactor->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
	_ui->label_meshDecimation->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
	_ui->spinBox_meshMaxPolygons->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
	_ui->label_meshMaxPolygons->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
#endif
	_ui->groupBox_organized->setVisible(_ui->comboBox_pipeline->currentIndex() == 0);

	_ui->groupBox_regenerate->setVisible(_ui->checkBox_regenerate->isChecked());
	_ui->groupBox_bilateral->setVisible(_ui->checkBox_bilateral->isChecked());
	_ui->groupBox_filtering->setVisible(_ui->checkBox_filtering->isChecked());
	_ui->groupBox_gain->setVisible(_ui->checkBox_gainCompensation->isChecked());
	_ui->groupBox_mls->setVisible(_ui->checkBox_smoothing->isEnabled() && _ui->checkBox_smoothing->isChecked());
	_ui->groupBox_meshing->setVisible(_ui->checkBox_meshing->isChecked());
	_ui->groupBox_subtraction->setVisible(_ui->checkBox_subtraction->isChecked());
	_ui->groupBox_textureMapping->setVisible(_ui->checkBox_textureMapping->isChecked());
	_ui->groupBox_cameraFilter->setVisible(_ui->checkBox_cameraFilter->isChecked());

	// dense texturing options
	_ui->groupBox_gp3->setVisible(_ui->comboBox_pipeline->currentIndex() == 1 && _ui->comboBox_meshingApproach->currentIndex()==0);
	_ui->groupBox_poisson->setVisible(_ui->comboBox_pipeline->currentIndex() == 1 && _ui->comboBox_meshingApproach->currentIndex()==1);
	if(_ui->checkBox_meshing->isChecked())
	{
		_ui->comboBox_meshingApproach->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
		_ui->comboBox_meshingApproach->setItemData(1, _ui->checkBox_assemble->isChecked()?1 | 32:0,Qt::UserRole - 1);
		if(!_ui->checkBox_assemble->isChecked())
		{
			_ui->comboBox_meshingApproach->setCurrentIndex(0);
		}

		_ui->checkBox_poisson_outputPolygons->setDisabled(
					_ui->checkBox_binary->isEnabled() ||
					_ui->doubleSpinBox_meshDecimationFactor->value()!=0.0 ||
					_ui->spinBox_meshMaxPolygons->value()!=0 ||
					_ui->checkBox_textureMapping->isChecked());

		_ui->checkBox_cleanMesh->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
		_ui->label_meshClean->setEnabled(_ui->comboBox_pipeline->currentIndex() == 1);
	}
}

void ExportCloudsDialog::selectDistortionModel()
{
	QString dir = _ui->lineEdit_distortionModel->text();
	if(dir.isEmpty())
	{
		dir = _workingDirectory;
	}
	QString path = QFileDialog::getOpenFileName(this, tr("Select file"), dir, tr("Distortion model (*.bin *.txt)"));
	if(path.size())
	{
		_ui->lineEdit_distortionModel->setText(path);
	}
}

void ExportCloudsDialog::setSaveButton()
{
	_ui->buttonBox->button(QDialogButtonBox::Ok)->setVisible(false);
	_ui->buttonBox->button(QDialogButtonBox::Save)->setVisible(true);
	_ui->checkBox_binary->setVisible(true);
	_ui->checkBox_binary->setEnabled(true);
	_ui->label_binaryFile->setVisible(true);
	_ui->checkBox_mesh_quad->setVisible(false);
	_ui->checkBox_mesh_quad->setEnabled(false);
	_ui->label_quad->setVisible(false);
	updateReconstructionFlavor();
}

void ExportCloudsDialog::setOkButton()
{
	_ui->buttonBox->button(QDialogButtonBox::Ok)->setVisible(true);
	_ui->buttonBox->button(QDialogButtonBox::Save)->setVisible(false);
	_ui->checkBox_binary->setVisible(false);
	_ui->checkBox_binary->setEnabled(false);
	_ui->label_binaryFile->setVisible(false);
	_ui->checkBox_mesh_quad->setVisible(true);
	_ui->checkBox_mesh_quad->setEnabled(true);
	_ui->label_quad->setVisible(true);
	updateReconstructionFlavor();
}

void ExportCloudsDialog::enableRegeneration(bool enabled)
{
	if(!enabled)
	{
		_ui->checkBox_regenerate->setChecked(false);
	}
	_ui->checkBox_regenerate->setEnabled(enabled);
}

void ExportCloudsDialog::exportClouds(
		const std::map<int, Transform> & poses,
		const std::multimap<int, Link> & links,
		const std::map<int, int> & mapIds,
		const QMap<int, Signature> & cachedSignatures,
		const std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGB>::Ptr, pcl::IndicesPtr> > & cachedClouds,
		const QString & workingDirectory,
		const ParametersMap & parameters)
{
	std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr> clouds;
	std::map<int, pcl::PolygonMesh::Ptr> meshes;
	std::map<int, pcl::TextureMesh::Ptr> textureMeshes;
	std::vector<std::map<int, pcl::PointXY> > textureVertexToPixels;

	setSaveButton();

	if(getExportedClouds(
			poses,
			links,
			mapIds,
			cachedSignatures,
			cachedClouds,
			workingDirectory,
			parameters,
			clouds,
			meshes,
			textureMeshes,
			textureVertexToPixels))
	{
		if(textureMeshes.size())
		{
			saveTextureMeshes(workingDirectory, poses, textureMeshes, cachedSignatures, textureVertexToPixels);
		}
		else if(meshes.size())
		{
			bool exportMeshes = true;
			if(_ui->checkBox_textureMapping->isEnabled() && _ui->checkBox_textureMapping->isChecked())
			{
				QMessageBox::StandardButton r = QMessageBox::warning(this, tr("Exporting Texture Mesh"),
						tr("No texture mesh could be created, do you want to continue with saving only the meshes (%1)?").arg(meshes.size()),
						QMessageBox::Yes|QMessageBox::No, QMessageBox::Yes);
				exportMeshes = r == QMessageBox::Yes;
			}
			if(exportMeshes)
			{
				saveMeshes(workingDirectory, poses, meshes, _ui->checkBox_binary->isChecked());
			}
		}
		else
		{
			saveClouds(workingDirectory, poses, clouds, _ui->checkBox_binary->isChecked());
		}
	}
	else if(!_canceled)
	{
		_progressDialog->setAutoClose(false);
	}
	_progressDialog->setValue(_progressDialog->maximumSteps());
}

void ExportCloudsDialog::viewClouds(
		const std::map<int, Transform> & poses,
		const std::multimap<int, Link> & links,
		const std::map<int, int> & mapIds,
		const QMap<int, Signature> & cachedSignatures,
		const std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGB>::Ptr, pcl::IndicesPtr> > & cachedClouds,
		const QString & workingDirectory,
		const ParametersMap & parameters)
{
	std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr> clouds;
	std::map<int, pcl::PolygonMesh::Ptr> meshes;
	std::map<int, pcl::TextureMesh::Ptr> textureMeshes;
	std::vector<std::map<int, pcl::PointXY> > textureVertexToPixels;

	setOkButton();

	if(getExportedClouds(
			poses,
			links,
			mapIds,
			cachedSignatures,
			cachedClouds,
			workingDirectory,
			parameters,
			clouds,
			meshes,
			textureMeshes,
			textureVertexToPixels))
	{
		QDialog * window = new QDialog(this->parentWidget()?this->parentWidget():this, Qt::Window);
		window->setAttribute(Qt::WA_DeleteOnClose, true);
		if(meshes.size())
		{
			window->setWindowTitle(tr("Meshes (%1 nodes)").arg(meshes.size()));
		}
		else
		{
			window->setWindowTitle(tr("Clouds (%1 nodes)").arg(clouds.size()));
		}
		window->setMinimumWidth(120);
		window->setMinimumHeight(90);
		window->resize(QDesktopWidget().availableGeometry(this).size() * 0.7);

		CloudViewer * viewer = new CloudViewer(window);
		if(_ui->comboBox_pipeline->currentIndex() == 0)
		{
			viewer->setBackfaceCulling(true, false);
		}
		viewer->setLighting(true);
		viewer->setDefaultBackgroundColor(QColor(40, 40, 40, 255));

		QVBoxLayout *layout = new QVBoxLayout();
		layout->addWidget(viewer);
		layout->setContentsMargins(0,0,0,0);
		window->setLayout(layout);
		connect(window, SIGNAL(finished(int)), viewer, SLOT(clear()));

		window->show();

		_progressDialog->appendText(tr("Opening visualizer..."));
		QApplication::processEvents();
		uSleep(500);
		QApplication::processEvents();

		if(textureMeshes.size())
		{
			for (std::map<int, pcl::TextureMesh::Ptr>::iterator iter = textureMeshes.begin(); iter != textureMeshes.end(); ++iter)
			{
				pcl::TextureMesh::Ptr mesh = iter->second;

				// As CloudViewer is not supporting more than one texture per mesh, merge them all by default
				cv::Mat globalTexture;
				if (mesh->tex_materials.size() > 1)
				{
					globalTexture = mergeTextures(*mesh, cachedSignatures, textureVertexToPixels);
				}

				_progressDialog->appendText(tr("Viewing the mesh %1 (%2 polygons)...").arg(iter->first).arg(mesh->tex_polygons.size()?mesh->tex_polygons[0].size():0));
				_progressDialog->incrementStep();

				// VTK issue:
				//  tex_coordinates should be linked to points, not
				//  polygon vertices. Points linked to multiple different TCoords (different textures) should
				//  be duplicated.
				for (unsigned int t = 0; t < mesh->tex_coordinates.size(); ++t)
				{
					if(mesh->tex_polygons[t].size())
					{

						pcl::PointCloud<pcl::PointXYZ>::Ptr originalCloud(new pcl::PointCloud<pcl::PointXYZ>);
						pcl::fromPCLPointCloud2(mesh->cloud, *originalCloud);

						// make a cloud with as many points than polygon vertices
						unsigned int nPoints = mesh->tex_coordinates[t].size();
						UASSERT(nPoints == mesh->tex_polygons[t].size()*mesh->tex_polygons[t][0].vertices.size()); // assuming polygon size is constant!

						pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);
						cloud->resize(nPoints);

						unsigned int oi = 0;
						for (unsigned int i = 0; i < mesh->tex_polygons[t].size(); ++i)
						{
							pcl::Vertices & vertices = mesh->tex_polygons[t][i];

							for(unsigned int j=0; j<vertices.vertices.size(); ++j)
							{
								UASSERT(oi < cloud->size());
								UASSERT(vertices.vertices[j] < originalCloud->size());
								cloud->at(oi) = originalCloud->at(vertices.vertices[j]);
								vertices.vertices[j] = oi; // new vertice index
								++oi;
							}
						}
						pcl::toPCLPointCloud2(*cloud, mesh->cloud);
					}
					else
					{
						UWARN("No polygons for texture %d of mesh %d?!", t, iter->first);
					}
				}

				if (globalTexture.empty())
				{
					if(mesh->tex_materials.size()==1 &&
						!mesh->tex_materials[0].tex_file.empty() &&
						uIsInteger(mesh->tex_materials[0].tex_file, false))
					{
						int textureId = uStr2Int(mesh->tex_materials[0].tex_file);
						SensorData data;
						if(cachedSignatures.contains(textureId) && !cachedSignatures.value(textureId).sensorData().imageCompressed().empty())
						{
							data = cachedSignatures.value(textureId).sensorData();
						}
						else if(_dbDriver)
						{
							_dbDriver->getNodeData(textureId, data, true, false, false, false);
						}
						UASSERT(!data.imageCompressed().empty());
						data.uncompressDataConst(&globalTexture, 0);
						UASSERT(!globalTexture.empty());
						if (_ui->checkBox_gainCompensation->isChecked() && _compensator && _compensator->getIndex(textureId) >= 0)
						{
							_compensator->apply(textureId, globalTexture);
						}
					}
					else
					{
						_progressDialog->appendText(tr("No textures added to mesh %1!?").arg(iter->first), Qt::darkRed);
						_progressDialog->setAutoClose(false);
					}
				}

				viewer->addCloudTextureMesh(uFormat("mesh%d",iter->first), mesh, globalTexture, iter->first>0?poses.at(iter->first):Transform::getIdentity());
				_progressDialog->appendText(tr("Viewing the mesh %1 (%2 polygons)... done.").arg(iter->first).arg(mesh->tex_polygons.size()?mesh->tex_polygons[0].size():0));
				QApplication::processEvents();
			}
		}
		else if(meshes.size())
		{
			for(std::map<int, pcl::PolygonMesh::Ptr>::iterator iter = meshes.begin(); iter!=meshes.end(); ++iter)
			{
				_progressDialog->appendText(tr("Viewing the mesh %1 (%2 polygons)...").arg(iter->first).arg(iter->second->polygons.size()));
				_progressDialog->incrementStep();
				bool isRGB = false;
				for(unsigned int i=0; i<iter->second->cloud.fields.size(); ++i)
				{
					if(iter->second->cloud.fields[i].name.compare("rgb") == 0)
					{
						isRGB=true;
						break;
					}
				}
				if(isRGB)
				{
					pcl::PointCloud<pcl::PointXYZRGB>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZRGB>);
					pcl::fromPCLPointCloud2(iter->second->cloud, *cloud);
					viewer->addCloudMesh(uFormat("mesh%d",iter->first), cloud, iter->second->polygons, iter->first>0?poses.at(iter->first):Transform::getIdentity());
				}
				else
				{
					pcl::PointCloud<pcl::PointXYZ>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZ>);
					pcl::fromPCLPointCloud2(iter->second->cloud, *cloud);
					viewer->addCloudMesh(uFormat("mesh%d",iter->first), cloud, iter->second->polygons, iter->first>0?poses.at(iter->first):Transform::getIdentity());
				}
				_progressDialog->appendText(tr("Viewing the mesh %1 (%2 polygons)... done.").arg(iter->first).arg(iter->second->polygons.size()));
				QApplication::processEvents();
			}
		}
		else if(clouds.size())
		{
			for(std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr>::iterator iter = clouds.begin(); iter!=clouds.end(); ++iter)
			{
				_progressDialog->appendText(tr("Viewing the cloud %1 (%2 points)...").arg(iter->first).arg(iter->second->size()));
				_progressDialog->incrementStep();

				QColor color = Qt::gray;
				int mapId = uValue(mapIds, iter->first, -1);
				if(mapId >= 0)
				{
					color = (Qt::GlobalColor)(mapId % 12 + 7 );
				}
				viewer->addCloud(uFormat("cloud%d",iter->first), iter->second, iter->first>0?poses.at(iter->first):Transform::getIdentity());
				viewer->setCloudPointSize(uFormat("cloud%d",iter->first), 2);
				_progressDialog->appendText(tr("Viewing the cloud %1 (%2 points)... done.").arg(iter->first).arg(iter->second->size()));
			}
		}
		viewer->update();
	}
	else
	{
		_progressDialog->setAutoClose(false);
	}
	_progressDialog->setValue(_progressDialog->maximumSteps());
}

bool ExportCloudsDialog::removeDirRecursively(const QString & dirName)
{
    bool result = true;
    QDir dir(dirName);

    if (dir.exists(dirName)) {
        Q_FOREACH(QFileInfo info, dir.entryInfoList(QDir::NoDotAndDotDot | QDir::System | QDir::Hidden  | QDir::AllDirs | QDir::Files, QDir::DirsFirst)) {
            if (info.isDir()) {
                result = removeDirRecursively(info.absoluteFilePath());
            }
            else {
                result = QFile::remove(info.absoluteFilePath());
            }

            if (!result) {
                return result;
            }
        }
        result = dir.rmdir(dirName);
    }
    return result;
}

bool ExportCloudsDialog::getExportedClouds(
		const std::map<int, Transform> & poses,
		const std::multimap<int, Link> & links,
		const std::map<int, int> & mapIds,
		const QMap<int, Signature> & cachedSignatures,
		const std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGB>::Ptr, pcl::IndicesPtr> > & cachedClouds,
		const QString & workingDirectory,
		const ParametersMap & parameters,
		std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr> & cloudsWithNormals,
		std::map<int, pcl::PolygonMesh::Ptr> & meshes,
		std::map<int, pcl::TextureMesh::Ptr> & textureMeshes,
		std::vector<std::map<int, pcl::PointXY> > & textureVertexToPixels)
{
	_canceled = false;
	_workingDirectory = workingDirectory;
	enableRegeneration(_dbDriver || cachedSignatures.size());
	if(cachedSignatures.empty() && _dbDriver)
	{
		_ui->checkBox_regenerate->setChecked(true);
	}
	if(_compensator)
	{
		delete _compensator;
		_compensator = 0;
	}
	if(this->exec() == QDialog::Accepted)
	{
		if(poses.empty())
		{
			QMessageBox::critical(this, tr("Creating clouds..."), tr("Poses are null! Cannot export/view clouds."));
			return false;
		}
		_progressDialog->resetProgress();
		_progressDialog->show();
		int mul = 1;
		if(_ui->checkBox_meshing->isChecked())
		{
			mul+=1;
		}
		if(_ui->checkBox_assemble->isChecked())
		{
			mul+=1;
		}

		if(_ui->checkBox_subtraction->isChecked())
		{
			mul+=1;
		}
		if(_ui->checkBox_textureMapping->isChecked())
		{
			mul+=1;
		}
		if(_ui->checkBox_gainCompensation->isChecked())
		{
			mul+=1;
		}
		if(_ui->checkBox_mesh_quad->isEnabled()) // when enabled we are viewing the clouds
		{
			mul+=1;
		}
		_progressDialog->setMaximumSteps(int(poses.size())*mul+1);

		std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> > clouds = this->getClouds(
				poses,
				cachedSignatures,
				cachedClouds,
				parameters);

		if(_canceled)
		{
			return false;
		}

		if(clouds.empty())
		{
			_progressDialog->setAutoClose(false);
			if(_ui->checkBox_regenerate->isEnabled() && !_ui->checkBox_regenerate->isChecked())
			{
				QMessageBox::warning(this, tr("Creating clouds..."), tr("Could create clouds for %1 node(s). You "
						"may want to activate clouds regeneration option.").arg(poses.size()));
			}
			else
			{
				QMessageBox::warning(this, tr("Creating clouds..."), tr("Could not create clouds for %1 "
						"node(s). The cache may not contain point cloud data. Try re-downloading the map.").arg(poses.size()));
			}
			return false;
		}

		if(_ui->checkBox_gainCompensation->isChecked() && clouds.size() > 1 &&
				// Do compensation later if we are merging textures on a dense assembled cloud
				!(_ui->checkBox_meshing->isChecked() &&
					_ui->checkBox_textureMapping->isEnabled() &&
					_ui->checkBox_textureMapping->isChecked() &&
					_ui->comboBox_pipeline->currentIndex()==1 &&
					_ui->checkBox_assemble->isChecked() &&
					_ui->comboBox_meshingTextureSize->isEnabled() &&
					_ui->comboBox_meshingTextureSize->currentIndex() > 0))
		{
			UASSERT(_compensator == 0);
			_compensator = new GainCompensator(_ui->doubleSpinBox_gainRadius->value(), _ui->doubleSpinBox_gainOverlap->value(), 0.01, _ui->doubleSpinBox_gainBeta->value());

			if(_ui->checkBox_gainFull->isChecked())
			{
				_progressDialog->appendText(tr("Full gain compensation of %1 clouds...").arg(clouds.size()));
			}
			else
			{
				_progressDialog->appendText(tr("Gain compensation of %1 clouds...").arg(clouds.size()));
			}
			QApplication::processEvents();
			uSleep(100);
			QApplication::processEvents();

			if(_ui->checkBox_gainFull->isChecked())
			{
				std::multimap<int, Link> allLinks;
				for(std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> >::const_iterator iter=clouds.begin(); iter!=clouds.end(); ++iter)
				{
					int from = iter->first;
					std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> >::const_iterator jter = iter;
					++jter;
					for(;jter!=clouds.end(); ++jter)
					{
						int to = jter->first;
						allLinks.insert(std::make_pair(from, Link(from, to, Link::kUserClosure, poses.at(from).inverse()*poses.at(to))));
					}
				}

				_compensator->feed(clouds, allLinks);
			}
			else
			{
				_compensator->feed(clouds, links);
			}

			if(!(_ui->checkBox_meshing->isChecked() &&
				 _ui->checkBox_textureMapping->isEnabled() &&
				 _ui->checkBox_textureMapping->isChecked()))
			{
				_progressDialog->appendText(tr("Applying gain compensation..."));
				for(std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> >::iterator jter=clouds.begin();jter!=clouds.end(); ++jter)
				{
					if(jter!=clouds.end())
					{
						double gain = _compensator->getGain(jter->first);;
						_compensator->apply(jter->first, jter->second.first, jter->second.second);

						_progressDialog->appendText(tr("Cloud %1 has gain %2").arg(jter->first).arg(gain));
						_progressDialog->incrementStep();
						QApplication::processEvents();
						if(_canceled)
						{
							return false;
						}
					}
				}
			}
		}

		pcl::PointCloud<pcl::PointXYZ>::Ptr rawAssembledCloud(new pcl::PointCloud<pcl::PointXYZ>);
		std::vector<int> rawCameraIndices;
		if(_ui->checkBox_assemble->isChecked() &&
		   !(_ui->comboBox_pipeline->currentIndex()==0 && _ui->checkBox_meshing->isChecked()))
		{
			_progressDialog->appendText(tr("Assembling %1 clouds...").arg(clouds.size()));
			QApplication::processEvents();

			int i =0;
			pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr assembledCloud(new pcl::PointCloud<pcl::PointXYZRGBNormal>);
			for(std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> >::iterator iter=clouds.begin();
				iter!= clouds.end();
				++iter)
			{
				pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr transformed(new pcl::PointCloud<pcl::PointXYZRGBNormal>);
				if(iter->second.first->isOrganized())
				{
					pcl::copyPointCloud(*iter->second.first, *iter->second.second, *transformed);
					transformed = util3d::transformPointCloud(transformed, poses.at(iter->first));
				}
				else
				{
					transformed = util3d::transformPointCloud(iter->second.first, poses.at(iter->first));
				}

				*assembledCloud += *transformed;
				rawCameraIndices.resize(assembledCloud->size(), iter->first);

				_progressDialog->appendText(tr("Assembled cloud %1, total=%2 (%3/%4).").arg(iter->first).arg(assembledCloud->size()).arg(++i).arg(clouds.size()));
				_progressDialog->incrementStep();
				QApplication::processEvents();
				if(_canceled)
				{
					return false;
				}
			}

			pcl::copyPointCloud(*assembledCloud, *rawAssembledCloud);

			if(_ui->doubleSpinBox_voxelSize_assembled->value())
			{
				_progressDialog->appendText(tr("Voxelize cloud (%1 points, voxel size = %2 m)...")
						.arg(assembledCloud->size())
						.arg(_ui->doubleSpinBox_voxelSize_assembled->value()));
				QApplication::processEvents();
				unsigned int before = assembledCloud->size();
				assembledCloud = util3d::voxelize(
						assembledCloud,
						_ui->doubleSpinBox_voxelSize_assembled->value());
				_progressDialog->appendText(tr("Voxelize cloud (%1 points, voxel size = %2 m)...done! (%3 points)")
						.arg(before)
						.arg(_ui->doubleSpinBox_voxelSize_assembled->value())
						.arg(assembledCloud->size()));
			}

			clouds.clear();
			clouds.insert(std::make_pair(0, std::make_pair(assembledCloud, pcl::IndicesPtr(new std::vector<int>))));
		}

		if(_canceled)
		{
			return false;
		}

		std::map<int, Transform> viewPoints = poses;
		if(_ui->checkBox_smoothing->isEnabled() && _ui->checkBox_smoothing->isChecked())
		{
			_progressDialog->appendText(tr("Smoothing the surface using Moving Least Squares (MLS) algorithm... "
					"[search radius=%1m voxel=%2m]").arg(_ui->doubleSpinBox_mlsRadius->value()).arg(_ui->doubleSpinBox_voxelSize_assembled->value()));
			QApplication::processEvents();
			uSleep(100);
			QApplication::processEvents();

			// Adjust view points with local transforms
			for(std::map<int, Transform>::iterator iter= viewPoints.begin(); iter!=viewPoints.end(); ++iter)
			{
				std::vector<CameraModel> models;
				StereoCameraModel stereoModel;
				if(cachedSignatures.contains(iter->first))
				{
					const SensorData & data = cachedSignatures.find(iter->first)->sensorData();
					models = data.cameraModels();
					stereoModel = data.stereoCameraModel();
				}
				else if(_dbDriver)
				{
					_dbDriver->getCalibration(iter->first, models, stereoModel);
				}

				if(models.size() && !models[0].localTransform().isNull())
				{
					iter->second *= models[0].localTransform();
				}
				else if(!stereoModel.localTransform().isNull())
				{
					iter->second *= stereoModel.localTransform();
				}
			}
		}

		//fill cloudWithNormals
		for(std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> >::iterator iter=clouds.begin();
			iter!= clouds.end();
			++iter)
		{
			pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr cloudWithNormals = iter->second.first;

			if(_ui->checkBox_smoothing->isEnabled() && _ui->checkBox_smoothing->isChecked())
			{
				pcl::PointCloud<pcl::PointXYZRGB>::Ptr cloudWithoutNormals(new pcl::PointCloud<pcl::PointXYZRGB>);
				if(iter->second.second->size())
				{
					pcl::copyPointCloud(*cloudWithNormals, *iter->second.second, *cloudWithoutNormals);
				}
				else
				{
					pcl::copyPointCloud(*cloudWithNormals, *cloudWithoutNormals);
				}

				_progressDialog->appendText(tr("Smoothing (MLS) the cloud (%1 points)...").arg(cloudWithNormals->size()));
				QApplication::processEvents();
				uSleep(100);
				QApplication::processEvents();
				if(_canceled)
				{
					return false;
				}

				cloudWithNormals = util3d::mls(
						cloudWithoutNormals,
						(float)_ui->doubleSpinBox_mlsRadius->value(),
						_ui->spinBox_polygonialOrder->value(),
						_ui->comboBox_upsamplingMethod->currentIndex(),
						(float)_ui->doubleSpinBox_sampleRadius->value(),
						(float)_ui->doubleSpinBox_sampleStep->value(),
						_ui->spinBox_randomPoints->value(),
						(float)_ui->doubleSpinBox_dilationVoxelSize->value(),
						_ui->spinBox_dilationSteps->value());

				if(_ui->checkBox_assemble->isChecked())
				{
					// Re-voxelize to make sure to have uniform density
					if(_ui->doubleSpinBox_voxelSize_assembled->value())
					{
						_progressDialog->appendText(tr("Voxelize cloud (%1 points, voxel size = %2 m)...")
								.arg(cloudWithNormals->size())
								.arg(_ui->doubleSpinBox_voxelSize_assembled->value()));
						QApplication::processEvents();

						cloudWithNormals = util3d::voxelize(
								cloudWithNormals,
								_ui->doubleSpinBox_voxelSize_assembled->value());
					}
				
					_progressDialog->appendText(tr("Update %1 normals with %2 camera views...").arg(cloudWithNormals->size()).arg(poses.size()));

					util3d::adjustNormalsToViewPoints(
							viewPoints,
							rawAssembledCloud,
							rawCameraIndices,
							cloudWithNormals);
				}
			}
			else if(iter->second.first->isOrganized() && _ui->checkBox_filtering->isChecked())
			{
				cloudWithNormals = util3d::extractIndices(iter->second.first, iter->second.second, false, true);
			}

			cloudsWithNormals.insert(std::make_pair(iter->first, cloudWithNormals));

			_progressDialog->incrementStep();
			QApplication::processEvents();
			if(_canceled)
			{
				return false;
			}
		}

		//used for organized texturing below
		std::map<int, std::vector<int> > organizedIndices;
		std::map<int, cv::Size> organizedCloudSizes;

		//mesh
		UDEBUG("Meshing=%d", _ui->checkBox_meshing->isChecked()?1:0);
		if(_ui->checkBox_meshing->isChecked())
		{
			if(_ui->comboBox_pipeline->currentIndex() == 0)
			{
				_progressDialog->appendText(tr("Organized fast mesh... "));
				QApplication::processEvents();
				uSleep(100);
				QApplication::processEvents();

				pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr mergedClouds(new pcl::PointCloud<pcl::PointXYZRGBNormal>);
				std::vector<pcl::Vertices> mergedPolygons;

				int i=0;
				for(std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr >::iterator iter=cloudsWithNormals.begin();
					iter!= cloudsWithNormals.end();
					++iter)
				{
					if(iter->second->isOrganized())
					{
						if(iter->second->size())
						{
							Eigen::Vector3f viewpoint(0.0f,0.0f,0.0f);

							std::vector<CameraModel> models;
							StereoCameraModel stereoModel;
							if(cachedSignatures.contains(iter->first))
							{
								const SensorData & data = cachedSignatures.find(iter->first)->sensorData();
								models = data.cameraModels();
								stereoModel = data.stereoCameraModel();
							}
							else if(_dbDriver)
							{
								_dbDriver->getCalibration(iter->first, models, stereoModel);
							}

							if(models.size() && !models[0].localTransform().isNull())
							{
								viewpoint[0] = models[0].localTransform().x();
								viewpoint[1] = models[0].localTransform().y();
								viewpoint[2] = models[0].localTransform().z();
							}
							else if(!stereoModel.localTransform().isNull())
							{
								viewpoint[0] = stereoModel.localTransform().x();
								viewpoint[1] = stereoModel.localTransform().y();
								viewpoint[2] = stereoModel.localTransform().z();
							}

							std::vector<pcl::Vertices> polygons = util3d::organizedFastMesh(
									iter->second,
									_ui->doubleSpinBox_mesh_angleTolerance->value()*M_PI/180.0,
									_ui->checkBox_mesh_quad->isEnabled() && _ui->checkBox_mesh_quad->isChecked(),
									_ui->spinBox_mesh_triangleSize->value(),
									viewpoint);

							if(_ui->spinBox_mesh_minClusterSize->value() != 0)
							{
								_progressDialog->appendText(tr("Filter small polygon clusters..."));
								QApplication::processEvents();

								// filter polygons
								std::vector<std::set<int> > neighbors;
								std::vector<std::set<int> > vertexToPolygons;
								util3d::createPolygonIndexes(polygons,
										(int)iter->second->size(),
										neighbors,
										vertexToPolygons);
								std::list<std::list<int> > clusters = util3d::clusterPolygons(
										neighbors,
										_ui->spinBox_mesh_minClusterSize->value()<0?0:_ui->spinBox_mesh_minClusterSize->value());

								std::vector<pcl::Vertices> filteredPolygons(polygons.size());
								if(_ui->spinBox_mesh_minClusterSize->value() < 0)
								{
									// only keep the biggest cluster
									std::list<std::list<int> >::iterator biggestClusterIndex = clusters.end();
									unsigned int biggestClusterSize = 0;
									for(std::list<std::list<int> >::iterator iter=clusters.begin(); iter!=clusters.end(); ++iter)
									{
										if(iter->size() > biggestClusterSize)
										{
											biggestClusterIndex = iter;
											biggestClusterSize = iter->size();
										}
									}
									if(biggestClusterIndex != clusters.end())
									{
										int oi=0;
										for(std::list<int>::iterator jter=biggestClusterIndex->begin(); jter!=biggestClusterIndex->end(); ++jter)
										{
											filteredPolygons[oi++] = polygons.at(*jter);
										}
										filteredPolygons.resize(oi);
									}
								}
								else
								{
									int oi=0;
									for(std::list<std::list<int> >::iterator iter=clusters.begin(); iter!=clusters.end(); ++iter)
									{
										for(std::list<int>::iterator jter=iter->begin(); jter!=iter->end(); ++jter)
										{
											filteredPolygons[oi++] = polygons.at(*jter);
										}
									}
									filteredPolygons.resize(oi);
								}
								int before = (int)polygons.size();
								polygons = filteredPolygons;

								if(polygons.size() == 0)
								{
									std::string msg = uFormat("All %d polygons filtered after polygon cluster filtering. Cluster minimum size is %d.", before, _ui->spinBox_mesh_minClusterSize->value());
									_progressDialog->appendText(msg.c_str());
									UWARN(msg.c_str());
								}

								_progressDialog->appendText(tr("Filtered %1 polygons.").arg(before-(int)polygons.size()));
								QApplication::processEvents();
							}

							_progressDialog->appendText(tr("Mesh %1 created with %2 polygons (%3/%4).").arg(iter->first).arg(polygons.size()).arg(++i).arg(clouds.size()));

							pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr denseCloud(new pcl::PointCloud<pcl::PointXYZRGBNormal>);
							std::vector<pcl::Vertices> densePolygons;
							std::vector<int> denseToOrganizedIndices = util3d::filterNotUsedVerticesFromMesh(*iter->second, polygons, *denseCloud, densePolygons);

							if(!_ui->checkBox_assemble->isChecked() ||
								 (_ui->checkBox_textureMapping->isEnabled() &&
								  _ui->checkBox_textureMapping->isChecked() &&
								  _ui->doubleSpinBox_voxelSize_assembled->value() == 0.0)) // don't assemble now if we are texturing
							{
								if(_ui->checkBox_assemble->isChecked())
								{
									denseCloud = util3d::transformPointCloud(denseCloud, poses.at(iter->first));
								}

								pcl::PolygonMesh::Ptr mesh(new pcl::PolygonMesh);
								pcl::toPCLPointCloud2(*denseCloud, mesh->cloud);
								mesh->polygons = densePolygons;

								organizedIndices.insert(std::make_pair(iter->first, denseToOrganizedIndices));
								organizedCloudSizes.insert(std::make_pair(iter->first, cv::Size(iter->second->width, iter->second->height)));

								meshes.insert(std::make_pair(iter->first, mesh));
							}
							else
							{
								denseCloud = util3d::transformPointCloud(denseCloud, poses.at(iter->first));
								if(mergedClouds->size() == 0)
								{
									*mergedClouds = *denseCloud;
									mergedPolygons = densePolygons;
								}
								else
								{
									util3d::appendMesh(*mergedClouds, mergedPolygons, *denseCloud, densePolygons);
								}
							}
						}
						else
						{
							_progressDialog->appendText(tr("Mesh %1 not created (no valid points) (%2/%3).").arg(iter->first).arg(++i).arg(clouds.size()));
						}
					}
					else
					{
						_progressDialog->appendText(tr("Mesh %1 not created (cloud is not organized). You may want to check cloud regeneration option (%2/%3).").arg(iter->first).arg(++i).arg(clouds.size()));
					}

					_progressDialog->incrementStep();
					QApplication::processEvents();
					if(_canceled)
					{
						return false;
					}
				}

				if(_ui->checkBox_assemble->isChecked() && mergedClouds->size())
				{
					if(_ui->doubleSpinBox_voxelSize_assembled->value())
					{
						_progressDialog->appendText(tr("Filtering assembled mesh for close vertices (points=%1, polygons=%2)...").arg(mergedClouds->size()).arg(mergedPolygons.size()));
						QApplication::processEvents();

						mergedPolygons = util3d::filterCloseVerticesFromMesh(
								mergedClouds,
								mergedPolygons,
								_ui->doubleSpinBox_voxelSize_assembled->value(),
								M_PI/4,
								true);

						// filter invalid polygons
						unsigned int count = mergedPolygons.size();
						mergedPolygons = util3d::filterInvalidPolygons(mergedPolygons);
						_progressDialog->appendText(tr("Filtered %1 invalid polygons.").arg(count-mergedPolygons.size()));
						QApplication::processEvents();

						// filter not used vertices
						pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr filteredCloud(new pcl::PointCloud<pcl::PointXYZRGBNormal>);
						std::vector<pcl::Vertices> filteredPolygons;
						util3d::filterNotUsedVerticesFromMesh(*mergedClouds, mergedPolygons, *filteredCloud, filteredPolygons);
						mergedClouds = filteredCloud;
						mergedPolygons = filteredPolygons;
					}

					pcl::PolygonMesh::Ptr mesh(new pcl::PolygonMesh);
					pcl::toPCLPointCloud2(*mergedClouds, mesh->cloud);
					mesh->polygons = mergedPolygons;

					meshes.insert(std::make_pair(0, mesh));

					_progressDialog->incrementStep();
					QApplication::processEvents();
				}
			}
			else // dense pipeline
			{
				if(_ui->comboBox_meshingApproach->currentIndex() == 0)
				{
					_progressDialog->appendText(tr("Greedy projection triangulation... [radius=%1m]").arg(_ui->doubleSpinBox_gp3Radius->value()));
				}
				else
				{
					_progressDialog->appendText(tr("Poisson surface reconstruction..."));
				}
				QApplication::processEvents();
				uSleep(100);
				QApplication::processEvents();

				int i=0;
				for(std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr>::iterator iter=cloudsWithNormals.begin();
					iter!= cloudsWithNormals.end();
					++iter)
				{
					bool lostColors = false;
					pcl::PolygonMesh::Ptr mesh(new pcl::PolygonMesh);
					if(_ui->comboBox_meshingApproach->currentIndex() == 0)
					{
						mesh = util3d::createMesh(
								iter->second,
								_ui->doubleSpinBox_gp3Radius->value(),
								_ui->doubleSpinBox_gp3Mu->value());
					}
					else
					{
						pcl::Poisson<pcl::PointXYZRGBNormal> poisson;
						poisson.setOutputPolygons(_ui->checkBox_poisson_outputPolygons->isEnabled()?_ui->checkBox_poisson_outputPolygons->isChecked():false);
						poisson.setManifold(_ui->checkBox_poisson_manifold->isChecked());
						poisson.setSamplesPerNode(_ui->doubleSpinBox_poisson_samples->value());
						poisson.setDepth(_ui->spinBox_poisson_depth->value());
						poisson.setIsoDivide(_ui->spinBox_poisson_iso->value());
						poisson.setSolverDivide(_ui->spinBox_poisson_solver->value());
						poisson.setMinDepth(_ui->spinBox_poisson_minDepth->value());
						poisson.setPointWeight(_ui->doubleSpinBox_poisson_pointWeight->value());
						poisson.setScale(_ui->doubleSpinBox_poisson_scale->value());
						poisson.setInputCloud(iter->second);
						poisson.reconstruct(*mesh);

						lostColors = true;
					}

					_progressDialog->appendText(tr("Mesh %1 created with %2 polygons (%3/%4).").arg(iter->first).arg(mesh->polygons.size()).arg(++i).arg(clouds.size()));
					QApplication::processEvents();

					if(mesh->polygons.size()>0)
					{
						double meshDecimationFactor = 0.0;
						if(_ui->doubleSpinBox_meshDecimationFactor->isEnabled() &&
						   _ui->doubleSpinBox_meshDecimationFactor->value() > 0.0)
						{
							meshDecimationFactor = _ui->doubleSpinBox_meshDecimationFactor->value();
						}
						if(_ui->spinBox_meshMaxPolygons->isEnabled() &&
						   _ui->spinBox_meshMaxPolygons->value() > 0)
						{
							double factor = 1.0-double(_ui->spinBox_meshMaxPolygons->value())/double(mesh->polygons.size());
							if(factor > meshDecimationFactor)
							{
								meshDecimationFactor = factor;
							}
						}
						if(meshDecimationFactor > 0.0)
						{
							unsigned int count = mesh->polygons.size();
							_progressDialog->appendText(tr("Mesh decimation (factor=%1) from %2 polygons...").arg(meshDecimationFactor).arg(count));
							QApplication::processEvents();
							uSleep(100);
							QApplication::processEvents();

							mesh = util3d::meshDecimation(mesh, (float)meshDecimationFactor);
							_progressDialog->appendText(tr("Mesh decimated (factor=%1) from %2 to %3 polygons").arg(meshDecimationFactor).arg(count).arg(mesh->polygons.size()));
							if(count < mesh->polygons.size())
							{
								_progressDialog->appendText(tr("Decimated mesh %1 has more polygons than before!").arg(iter->first), Qt::darkYellow);
								_progressDialog->setAutoClose(false);
							}
							QApplication::processEvents();
							lostColors = true;
						}

						if(lostColors &&
							_ui->doubleSpinBox_transferColorRadius->value() >= 0.0 &&
							(!_ui->checkBox_textureMapping->isEnabled() || !_ui->checkBox_textureMapping->isChecked()))
						{
							_progressDialog->appendText(tr("Transferring color from point cloud to mesh..."));
							QApplication::processEvents();

							// transfer color from point cloud to mesh
							pcl::search::KdTree<pcl::PointXYZRGBNormal>::Ptr tree (new pcl::search::KdTree<pcl::PointXYZRGBNormal>(true));
							tree->setInputCloud(iter->second);
							pcl::PointCloud<pcl::PointXYZRGB>::Ptr coloredCloud(new pcl::PointCloud<pcl::PointXYZRGB>);
							pcl::fromPCLPointCloud2(mesh->cloud, *coloredCloud);
							std::vector<bool> coloredPts(coloredCloud->size());
							for(unsigned int i=0; i<coloredCloud->size(); ++i)
							{
								std::vector<int> kIndices;
								std::vector<float> kDistances;
								pcl::PointXYZRGBNormal pt;
								pt.x = coloredCloud->at(i).x;
								pt.y = coloredCloud->at(i).y;
								pt.z = coloredCloud->at(i).z;
								if(_ui->doubleSpinBox_transferColorRadius->value() > 0.0)
								{
									tree->radiusSearch(pt, _ui->doubleSpinBox_transferColorRadius->value(), kIndices, kDistances);
								}
								else
								{
									tree->nearestKSearch(pt, 1, kIndices, kDistances);
								}
								if(kIndices.size())
								{
									//compute average color
									int r=0;
									int g=0;
									int b=0;
									int a=0;
									for(unsigned int j=0; j<kIndices.size(); ++j)
									{
										r+=(int)iter->second->at(kIndices[j]).r;
										g+=(int)iter->second->at(kIndices[j]).g;
										b+=(int)iter->second->at(kIndices[j]).b;
										a+=(int)iter->second->at(kIndices[j]).a;
									}
									coloredCloud->at(i).r = r/kIndices.size();
									coloredCloud->at(i).g = g/kIndices.size();
									coloredCloud->at(i).b = b/kIndices.size();
									coloredCloud->at(i).a = a/kIndices.size();
									coloredPts.at(i) = true;
								}
								else
								{
									//white
									coloredCloud->at(i).r = coloredCloud->at(i).g = coloredCloud->at(i).b = 255;
									coloredPts.at(i) = false;
								}
							}
							pcl::toPCLPointCloud2(*coloredCloud, mesh->cloud);

							// remove polygons with no color
							if(_ui->checkBox_cleanMesh->isChecked())
							{
								std::vector<pcl::Vertices> filteredPolygons(mesh->polygons.size());
								int oi=0;
								for(unsigned int i=0; i<mesh->polygons.size(); ++i)
								{
									bool coloredPolygon = true;
									for(unsigned int j=0; j<mesh->polygons[i].vertices.size(); ++j)
									{
										if(!coloredPts.at(mesh->polygons[i].vertices[j]))
										{
											coloredPolygon = false;
											break;
										}
									}
									if(coloredPolygon)
									{
										filteredPolygons[oi++] = mesh->polygons[i];
									}
								}
								filteredPolygons.resize(oi);
								mesh->polygons = filteredPolygons;
							}
						}
						else if(lostColors &&
								_ui->doubleSpinBox_transferColorRadius->value() > 0.0 &&
								_ui->checkBox_cleanMesh->isChecked() &&
								(_ui->checkBox_textureMapping->isEnabled() && _ui->checkBox_textureMapping->isChecked()))
						{
							_progressDialog->appendText(tr("Removing polygons too far from the cloud..."));
							QApplication::processEvents();

							// transfer color from point cloud to mesh
							pcl::search::KdTree<pcl::PointXYZRGBNormal>::Ptr tree (new pcl::search::KdTree<pcl::PointXYZRGBNormal>(true));
							tree->setInputCloud(iter->second);
							pcl::PointCloud<pcl::PointXYZ>::Ptr optimizedCloud(new pcl::PointCloud<pcl::PointXYZ>);
							pcl::fromPCLPointCloud2(mesh->cloud, *optimizedCloud);
							std::vector<bool> closePts(optimizedCloud->size());
							for(unsigned int i=0; i<optimizedCloud->size(); ++i)
							{
								std::vector<int> kIndices;
								std::vector<float> kDistances;
								pcl::PointXYZRGBNormal pt;
								pt.x = optimizedCloud->at(i).x;
								pt.y = optimizedCloud->at(i).y;
								pt.z = optimizedCloud->at(i).z;
								tree->radiusSearch(pt, _ui->doubleSpinBox_transferColorRadius->value(), kIndices, kDistances);
								if(kIndices.size())
								{
									closePts.at(i) = true;
								}
								else
								{
									closePts.at(i) = false;
								}
							}

							// remove far polygons
							std::vector<pcl::Vertices> filteredPolygons(mesh->polygons.size());
							int oi=0;
							for(unsigned int i=0; i<mesh->polygons.size(); ++i)
							{
								bool keepPolygon = true;
								for(unsigned int j=0; j<mesh->polygons[i].vertices.size(); ++j)
								{
									if(!closePts.at(mesh->polygons[i].vertices[j]))
									{
										keepPolygon = false;
										break;
									}
								}
								if(keepPolygon)
								{
									filteredPolygons[oi++] = mesh->polygons[i];
								}
							}
							filteredPolygons.resize(oi);
							mesh->polygons = filteredPolygons;
						}

						if(_ui->spinBox_mesh_minClusterSize->value() &&
							!(_ui->checkBox_textureMapping->isEnabled() &&
							  _ui->checkBox_textureMapping->isChecked() &&
							  _ui->checkBox_cleanMesh->isChecked()))
						{
							_progressDialog->appendText(tr("Filter small polygon clusters..."));
							QApplication::processEvents();

							// filter polygons
							std::vector<std::set<int> > neighbors;
							std::vector<std::set<int> > vertexToPolygons;
							util3d::createPolygonIndexes(mesh->polygons,
									mesh->cloud.height*mesh->cloud.width,
									neighbors,
									vertexToPolygons);
							std::list<std::list<int> > clusters = util3d::clusterPolygons(
									neighbors,
									_ui->spinBox_mesh_minClusterSize->value()<0?0:_ui->spinBox_mesh_minClusterSize->value());

							std::vector<pcl::Vertices> filteredPolygons(mesh->polygons.size());
							if(_ui->spinBox_mesh_minClusterSize->value() < 0)
							{
								// only keep the biggest cluster
								std::list<std::list<int> >::iterator biggestClusterIndex = clusters.end();
								unsigned int biggestClusterSize = 0;
								for(std::list<std::list<int> >::iterator iter=clusters.begin(); iter!=clusters.end(); ++iter)
								{
									if(iter->size() > biggestClusterSize)
									{
										biggestClusterIndex = iter;
										biggestClusterSize = iter->size();
									}
								}
								if(biggestClusterIndex != clusters.end())
								{
									int oi=0;
									for(std::list<int>::iterator jter=biggestClusterIndex->begin(); jter!=biggestClusterIndex->end(); ++jter)
									{
										filteredPolygons[oi++] = mesh->polygons.at(*jter);
									}
									filteredPolygons.resize(oi);
								}
							}
							else
							{
								int oi=0;
								for(std::list<std::list<int> >::iterator iter=clusters.begin(); iter!=clusters.end(); ++iter)
								{
									for(std::list<int>::iterator jter=iter->begin(); jter!=iter->end(); ++jter)
									{
										filteredPolygons[oi++] = mesh->polygons.at(*jter);
									}
								}
								filteredPolygons.resize(oi);
							}

							int before = (int)mesh->polygons.size();
							mesh->polygons = filteredPolygons;

							_progressDialog->appendText(tr("Filtered %1 polygons.").arg(before-(int)mesh->polygons.size()));
						}

						meshes.insert(std::make_pair(iter->first, mesh));
					}
					else
					{
						_progressDialog->appendText(tr("No polygons created for cloud %d!").arg(iter->first), Qt::darkYellow);
						_progressDialog->setAutoClose(false);
					}

					_progressDialog->incrementStep(_ui->checkBox_assemble->isChecked()?poses.size():1);
					QApplication::processEvents();
					if(_canceled)
					{
						return false;
					}
				}
			}
		}

		if(_canceled)
		{
			return false;
		}

		// texture mesh
		UDEBUG("texture mapping=%d", _ui->checkBox_textureMapping->isEnabled() && _ui->checkBox_textureMapping->isChecked()?1:0);
		if(_ui->checkBox_textureMapping->isEnabled() && _ui->checkBox_textureMapping->isChecked())
		{
			_progressDialog->appendText(tr("Texturing..."));
			QApplication::processEvents();
			uSleep(100);
			QApplication::processEvents();

			int i=0;
			for(std::map<int, pcl::PolygonMesh::Ptr>::iterator iter=meshes.begin();
				iter!= meshes.end();
				++iter)
			{
				std::map<int, Transform> cameras;
				if(iter->first == 0)
				{
					cameras = poses;
				}
				else
				{
					UASSERT(uContains(poses, iter->first));
					cameras.insert(std::make_pair(iter->first, _ui->checkBox_assemble->isChecked()?poses.at(iter->first):Transform::getIdentity()));
				}
				std::map<int, Transform> cameraPoses;
				std::map<int, CameraModel> cameraModels;
				for(std::map<int, Transform>::iterator jter=cameras.begin(); jter!=cameras.end(); ++jter)
				{
					std::vector<CameraModel> models;
					StereoCameraModel stereoModel;
					bool cacheHasCompressedImage = false;
					if(cachedSignatures.contains(jter->first))
					{
						const SensorData & data = cachedSignatures.find(jter->first)->sensorData();
						models = data.cameraModels();
						stereoModel = data.stereoCameraModel();
						cacheHasCompressedImage = !data.imageCompressed().empty();
					}
					else if(_dbDriver)
					{
						_dbDriver->getCalibration(jter->first, models, stereoModel);
					}

					CameraModel model;
					if(stereoModel.isValidForProjection())
					{
						model = stereoModel.left();
					}
					else if(models.size() == 1 && models[0].isValidForProjection())
					{
						model = models[0];
					}
					if(!jter->second.isNull() && model.isValidForProjection())
					{
						if(model.imageWidth() == 0 || model.imageHeight() == 0)
						{
							// we are using an old database format (image size not saved in calibrations), we should
							// uncompress images to get their size
							cv::Mat img;
							if(cacheHasCompressedImage)
							{
								cachedSignatures.find(jter->first)->sensorData().uncompressDataConst(&img, 0);
							}
							else if(_dbDriver)
							{
								SensorData data;
								_dbDriver->getNodeData(jter->first, data, true, false, false, false);
								data.uncompressDataConst(&img, 0);
							}
							model.setImageSize(img.size());
						}

						if(model.imageWidth() != 0 && model.imageHeight() != 0)
						{
							cameraPoses.insert(std::make_pair(jter->first, jter->second));
							cameraModels.insert(std::make_pair(jter->first, model));
						}
					}
				}
				if(cameraPoses.size() && iter->second->polygons.size())
				{
					pcl::TextureMesh::Ptr textureMesh(new pcl::TextureMesh);
					std::map<int, std::vector<int> >::iterator oter = organizedIndices.find(iter->first);
					std::map<int, cv::Size>::iterator ster = organizedCloudSizes.find(iter->first);
					if(iter->first != 0 && oter != organizedIndices.end())
					{
						UASSERT(ster!=organizedCloudSizes.end()&&ster->first == oter->first);
						UDEBUG("Texture by pixels");
						textureMesh->cloud = iter->second->cloud;
						textureMesh->tex_polygons.push_back(iter->second->polygons);
						int w = ster->second.width;
						int h = ster->second.height;
						UASSERT(w > 1 && h > 1);
						if(textureMesh->tex_polygons.size() && textureMesh->tex_polygons[0].size())
						{
							textureMesh->tex_coordinates.resize(1);

							//tex_coordinates should be linked to polygon vertices
							int polygonSize = (int)textureMesh->tex_polygons[0][0].vertices.size();
							textureMesh->tex_coordinates[0].resize(polygonSize*textureMesh->tex_polygons[0].size());
							for(unsigned int i=0; i<textureMesh->tex_polygons[0].size(); ++i)
							{
								const pcl::Vertices & vertices = textureMesh->tex_polygons[0][i];
								UASSERT(polygonSize == (int)vertices.vertices.size());
								for(int k=0; k<polygonSize; ++k)
								{
									//uv
									UASSERT(vertices.vertices[k] < oter->second.size());
									int originalVertex = oter->second[vertices.vertices[k]];
									textureMesh->tex_coordinates[0][i*polygonSize+k] = Eigen::Vector2f(
											float(originalVertex % w) / float(w),      // u
											float(h - originalVertex / w) / float(h)); // v
								}
							}

							pcl::TexMaterial mesh_material;
							mesh_material.tex_d = 1.0f;
							mesh_material.tex_Ns = 75.0f;
							mesh_material.tex_illum = 1;

							std::stringstream tex_name;
							tex_name << "material_" << iter->first;
							tex_name >> mesh_material.tex_name;

							mesh_material.tex_file = uFormat("%d", iter->first);
							textureMesh->tex_materials.push_back(mesh_material);
						}
						else
						{
							UWARN("No polygons for mesh %d!?", iter->first);
						}
					}
					else
					{
						UDEBUG("Texture by projection");

						if(cameraPoses.size() && _ui->checkBox_cameraFilter->isChecked())
						{
							int before = (int)cameraPoses.size();
							cameraPoses = graph::radiusPosesFiltering(cameraPoses,
									_ui->doubleSpinBox_cameraFilterRadius->value(),
									_ui->doubleSpinBox_cameraFilterAngle->value());
							for(std::map<int, CameraModel>::iterator modelIter = cameraModels.begin(); modelIter!=cameraModels.end();)
							{
								if(cameraPoses.find(modelIter->first)==cameraPoses.end())
								{
									cameraModels.erase(modelIter++);
								}
								else
								{
									++modelIter;
								}
							}
							_progressDialog->appendText(tr("Camera filtering: keeping %1/%2 cameras for texturing.").arg(cameraPoses.size()).arg(before));
							QApplication::processEvents();
							uSleep(100);
							QApplication::processEvents();
						}

						if(_canceled)
						{
							return false;
						}

						TexturingState texturingState(_progressDialog);
						_progressDialog->setMaximumSteps(_progressDialog->maximumSteps()+iter->second->polygons.size()/10000+1);

						std::vector<float> roiRatios;
						QStringList strings = _ui->lineEdit_meshingTextureRoiRatios->text().split(' ');
						if(!_ui->lineEdit_meshingTextureRoiRatios->text().isEmpty())
						{
							if(strings.size()==4)
							{
								roiRatios.resize(4);
								roiRatios[0]=strings[0].toDouble();
								roiRatios[1]=strings[1].toDouble();
								roiRatios[2]=strings[2].toDouble();
								roiRatios[3]=strings[3].toDouble();
								if(!(roiRatios[0]>=0.0f && roiRatios[0]<=1.0f &&
									roiRatios[1]>=0.0f && roiRatios[1]<=1.0f &&
									roiRatios[2]>=0.0f && roiRatios[2]<=1.0f &&
									roiRatios[3]>=0.0f && roiRatios[3]<=1.0f))
								{
									roiRatios.clear();
								}
							}
							if(roiRatios.empty())
							{
								QString msg = tr("Wrong ROI format. Region of Interest (ROI) must have 4 values [left right top bottom] between 0 and 1 separated by space (%1), ignoring it for texturing...").arg(_ui->lineEdit_meshingTextureRoiRatios->text());
								UWARN(msg.toStdString().c_str());
								_progressDialog->appendText(msg, Qt::darkYellow);
								_progressDialog->setAutoClose(false);
							}
						}

						textureMesh = util3d::createTextureMesh(
								iter->second,
								cameraPoses,
								cameraModels,
								_ui->doubleSpinBox_meshingTextureMaxDistance->value(),
								_ui->spinBox_mesh_minTextureClusterSize->value(),
								roiRatios,
								&texturingState,
								cameraPoses.size()>1?&textureVertexToPixels:0); // only get vertexToPixels if merged clouds with multi textures

						if(_canceled)
						{
							return false;
						}

						// Remove occluded polygons (polygons with no texture)
						if(_ui->checkBox_cleanMesh->isChecked() &&
							textureMesh->tex_coordinates.size())
						{
							// assume last texture is the occluded texture
							textureMesh->tex_coordinates.pop_back();
							textureMesh->tex_polygons.pop_back();
							textureMesh->tex_materials.pop_back();

							if(_ui->spinBox_mesh_minClusterSize->value())
							{
								_progressDialog->appendText(tr("Filter small polygon clusters..."));
								QApplication::processEvents();

								// concatenate all polygons
								unsigned int totalSize = 0;
								for(unsigned int t=0; t<textureMesh->tex_polygons.size(); ++t)
								{
									totalSize+=textureMesh->tex_polygons[t].size();
								}
								std::vector<pcl::Vertices> allPolygons(totalSize);
								int oi=0;
								for(unsigned int t=0; t<textureMesh->tex_polygons.size(); ++t)
								{
									for(unsigned int i=0; i<textureMesh->tex_polygons[t].size(); ++i)
									{
										allPolygons[oi++] =  textureMesh->tex_polygons[t][i];
									}
								}

								// filter polygons
								std::vector<std::set<int> > neighbors;
								std::vector<std::set<int> > vertexToPolygons;
								util3d::createPolygonIndexes(allPolygons,
										(int)textureMesh->cloud.data.size()/textureMesh->cloud.point_step,
										neighbors,
										vertexToPolygons);

								std::list<std::list<int> > clusters = util3d::clusterPolygons(
										neighbors,
										_ui->spinBox_mesh_minClusterSize->value()<0?0:_ui->spinBox_mesh_minClusterSize->value());

								std::set<int> validPolygons;
								if(_ui->spinBox_mesh_minClusterSize->value() < 0)
								{
									// only keep the biggest cluster
									std::list<std::list<int> >::iterator biggestClusterIndex = clusters.end();
									unsigned int biggestClusterSize = 0;
									for(std::list<std::list<int> >::iterator iter=clusters.begin(); iter!=clusters.end(); ++iter)
									{
										if(iter->size() > biggestClusterSize)
										{
											biggestClusterIndex = iter;
											biggestClusterSize = iter->size();
										}
									}
									if(biggestClusterIndex != clusters.end())
									{
										for(std::list<int>::iterator jter=biggestClusterIndex->begin(); jter!=biggestClusterIndex->end(); ++jter)
										{
											validPolygons.insert(*jter);
										}
									}
								}
								else
								{
									for(std::list<std::list<int> >::iterator iter=clusters.begin(); iter!=clusters.end(); ++iter)
									{
										for(std::list<int>::iterator jter=iter->begin(); jter!=iter->end(); ++jter)
										{
											validPolygons.insert(*jter);
										}
									}
								}

								if(validPolygons.size() == 0)
								{
									std::string msg = uFormat("All %d polygons filtered after polygon cluster filtering. Cluster minimum size is %d.",totalSize, _ui->spinBox_mesh_minClusterSize->value());
									_progressDialog->appendText(msg.c_str());
									UWARN(msg.c_str());
								}

								// for each texture
								unsigned int allPolygonsIndex = 0;
								for(unsigned int t=0; t<textureMesh->tex_polygons.size(); ++t)
								{
									std::vector<pcl::Vertices> filteredPolygons(textureMesh->tex_polygons[t].size());
#if PCL_VERSION_COMPARE(>=, 1, 8, 0)
									std::vector<Eigen::Vector2f, Eigen::aligned_allocator<Eigen::Vector2f> > filteredCoordinates(textureMesh->tex_coordinates[t].size());
#else
									std::vector<Eigen::Vector2f> filteredCoordinates(textureMesh->tex_coordinates[t].size());
#endif

									if(textureMesh->tex_polygons[t].size())
									{
										UASSERT_MSG(allPolygonsIndex < allPolygons.size(), uFormat("%d vs %d", (int)allPolygonsIndex, (int)allPolygons.size()).c_str());

										// make index polygon to coordinate
										std::vector<unsigned int> polygonToCoord(textureMesh->tex_polygons[t].size());
										unsigned int totalCoord = 0;
										for(unsigned int i=0; i<textureMesh->tex_polygons[t].size(); ++i)
										{
											polygonToCoord[i] = totalCoord;
											totalCoord+=textureMesh->tex_polygons[t][i].vertices.size();
										}
										UASSERT_MSG(totalCoord == textureMesh->tex_coordinates[t].size(), uFormat("%d vs %d", totalCoord, (int)textureMesh->tex_coordinates[t].size()).c_str());

										int oi=0;
										int ci=0;
										for(unsigned int i=0; i<textureMesh->tex_polygons[t].size(); ++i)
										{
											if(validPolygons.find(allPolygonsIndex) != validPolygons.end())
											{
												filteredPolygons[oi] = textureMesh->tex_polygons[t].at(i);
												for(unsigned int j=0; j<filteredPolygons[oi].vertices.size(); ++j)
												{
													UASSERT(polygonToCoord[i] < textureMesh->tex_coordinates[t].size());
													filteredCoordinates[ci] = textureMesh->tex_coordinates[t][polygonToCoord[i]+j];
													++ci;
												}
												++oi;
											}
											++allPolygonsIndex;
										}
										filteredPolygons.resize(oi);
										filteredCoordinates.resize(ci);
										textureMesh->tex_polygons[t] = filteredPolygons;
										textureMesh->tex_coordinates[t] = filteredCoordinates;
									}
								}

								_progressDialog->appendText(tr("Filtered %1 polygons.").arg(allPolygons.size()-validPolygons.size()));
								QApplication::processEvents();
							}
						}
					}

					textureMeshes.insert(std::make_pair(iter->first, textureMesh));
				}
				else if(cameraPoses.size() == 0)
				{
					_progressDialog->appendText(tr("No cameras from %1 poses with valid calibration found!").arg(poses.size()), Qt::darkYellow);
					_progressDialog->setAutoClose(false);
					UWARN("No camera poses!?");
				}
				else
				{
					_progressDialog->appendText(tr("No polygons!?"), Qt::darkYellow);
					_progressDialog->setAutoClose(false);
					UWARN("No polygons!");
				}

				_progressDialog->appendText(tr("TextureMesh %1 created [cameras=%2] (%3/%4).").arg(iter->first).arg(cameraPoses.size()).arg(++i).arg(meshes.size()));
				_progressDialog->incrementStep();
				QApplication::processEvents();
				if(_canceled)
				{
					return false;
				}
			}

			if(textureMeshes.size() > 1 && _ui->checkBox_assemble->isChecked())
			{
				UDEBUG("Concatenate texture meshes");
				_progressDialog->appendText(tr("Assembling %1 meshes...").arg(textureMeshes.size()));
				QApplication::processEvents();
				uSleep(100);
				QApplication::processEvents();

				pcl::TextureMesh::Ptr assembledMesh = util3d::concatenateTextureMeshes(uValuesList(textureMeshes));
				textureMeshes.clear();
				textureMeshes.insert(std::make_pair(0, assembledMesh));
			}

		}
		UDEBUG("");
		return true;
	}
	return false;
}

std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> > ExportCloudsDialog::getClouds(
		const std::map<int, Transform> & poses,
		const QMap<int, Signature> & cachedSignatures,
		const std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGB>::Ptr, pcl::IndicesPtr> > & cachedClouds,
		const ParametersMap & parameters) const
{
	std::map<int, std::pair<pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr, pcl::IndicesPtr> > clouds;
	int index=1;
	pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr previousCloud;
	pcl::IndicesPtr previousIndices;
	Transform previousPose;
	for(std::map<int, Transform>::const_iterator iter = poses.begin(); iter!=poses.end() && !_canceled; ++iter, ++index)
	{
		int points = 0;
		int totalIndices = 0;
		if(!iter->second.isNull())
		{
			pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr cloud(new pcl::PointCloud<pcl::PointXYZRGBNormal>);
			pcl::IndicesPtr indices(new std::vector<int>);
			if(_ui->checkBox_regenerate->isChecked())
			{
				SensorData data;
				cv::Mat image, depth;
				if(cachedSignatures.contains(iter->first))
				{
					const Signature & s = cachedSignatures.find(iter->first).value();
					data = s.sensorData();
					data.uncompressData(&image, &depth, 0);
				}
				else if(_dbDriver)
				{
					_dbDriver->getNodeData(iter->first, data, true, false, false, false);
					data.uncompressData(&image, &depth, 0);
				}

				if(!image.empty() && !depth.empty())
				{
					if(_ui->spinBox_fillDepthHoles->value() > 0)
					{
						depth = util2d::fillDepthHoles(depth, _ui->spinBox_fillDepthHoles->value(), float(_ui->spinBox_fillDepthHolesError->value())/100.f);
					}

					if(!_ui->lineEdit_distortionModel->text().isEmpty() &&
					   QFileInfo(_ui->lineEdit_distortionModel->text()).exists())
					{
						clams::DiscreteDepthDistortionModel model;
						model.load(_ui->lineEdit_distortionModel->text().toStdString());
						depth = depth.clone();// make sure we are not modifying data in cached signatures.
						model.undistort(depth);
						data.setDepthOrRightRaw(depth);
					}

					// bilateral filtering
					if(_ui->checkBox_bilateral->isChecked())
					{
						depth = util2d::fastBilateralFiltering(depth,
								_ui->doubleSpinBox_bilateral_sigmaS->value(),
								_ui->doubleSpinBox_bilateral_sigmaR->value());
						data.setDepthOrRightRaw(depth);
					}

					UASSERT(iter->first == data.id());
					pcl::PointCloud<pcl::PointXYZRGB>::Ptr cloudWithoutNormals;
					std::vector<float> roiRatios;
					if(!_ui->lineEdit_roiRatios->text().isEmpty())
					{
						QStringList values = _ui->lineEdit_roiRatios->text().split(' ');
						if(values.size() == 4)
						{
							roiRatios.resize(4);
							for(int i=0; i<values.size(); ++i)
							{
								roiRatios[i] = uStr2Float(values[i].toStdString().c_str());
							}
						}
					}
					cloudWithoutNormals = util3d::cloudRGBFromSensorData(
							data,
							_ui->spinBox_decimation->value() == 0?1:_ui->spinBox_decimation->value(),
							_ui->doubleSpinBox_maxDepth->value(),
							_ui->doubleSpinBox_minDepth->value(),
							indices.get(),
							parameters,
							roiRatios);

					if(cloudWithoutNormals->size())
					{
						// Don't voxelize if we create organized mesh
						if(!(_ui->comboBox_pipeline->currentIndex()==0 && _ui->checkBox_meshing->isChecked()) && _ui->doubleSpinBox_voxelSize_assembled->value()>0.0)
						{
							cloudWithoutNormals = util3d::voxelize(cloudWithoutNormals, indices, _ui->doubleSpinBox_voxelSize_assembled->value());
							indices->resize(cloudWithoutNormals->size());
							for(unsigned int i=0; i<indices->size(); ++i)
							{
								indices->at(i) = i;
							}
						}

						// view point
						Eigen::Vector3f viewPoint(0.0f,0.0f,0.0f);
						if(data.cameraModels().size() && !data.cameraModels()[0].localTransform().isNull())
						{
							viewPoint[0] = data.cameraModels()[0].localTransform().x();
							viewPoint[1] = data.cameraModels()[0].localTransform().y();
							viewPoint[2] = data.cameraModels()[0].localTransform().z();
						}
						else if(!data.stereoCameraModel().localTransform().isNull())
						{
							viewPoint[0] = data.stereoCameraModel().localTransform().x();
							viewPoint[1] = data.stereoCameraModel().localTransform().y();
							viewPoint[2] = data.stereoCameraModel().localTransform().z();
						}

						pcl::PointCloud<pcl::Normal>::Ptr normals = util3d::computeNormals(cloudWithoutNormals, indices, _ui->spinBox_normalKSearch->value(), viewPoint);
						pcl::concatenateFields(*cloudWithoutNormals, *normals, *cloud);

						if(_ui->checkBox_subtraction->isChecked() &&
						   _ui->doubleSpinBox_subtractPointFilteringRadius->value() > 0.0)
						{
							pcl::IndicesPtr beforeSubtractionIndices = indices;
							if(	cloud->size() &&
								previousCloud.get() != 0 &&
								previousIndices.get() != 0 &&
								previousIndices->size() &&
								!previousPose.isNull())
							{
								rtabmap::Transform t = iter->second.inverse() * previousPose;
								pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr transformedCloud = rtabmap::util3d::transformPointCloud(previousCloud, t);
								indices = rtabmap::util3d::subtractFiltering(
										cloud,
										indices,
										transformedCloud,
										previousIndices,
										_ui->doubleSpinBox_subtractPointFilteringRadius->value(),
										_ui->doubleSpinBox_subtractPointFilteringAngle->value(),
										_ui->spinBox_subtractFilteringMinPts->value());
							}
							previousCloud = cloud;
							previousIndices = beforeSubtractionIndices;
							previousPose = iter->second;
						}
					}
				}
				else
				{
					UERROR("Cloud %d not found in cache!", iter->first);
				}
			}
			else if(uContains(cachedClouds, iter->first))
			{
				pcl::PointCloud<pcl::PointXYZRGB>::Ptr cloudWithoutNormals;
				if(!_ui->checkBox_meshing->isChecked() &&
				   _ui->doubleSpinBox_voxelSize_assembled->value() > 0.0)
				{
					cloudWithoutNormals = util3d::voxelize(
							cachedClouds.at(iter->first).first,
							cachedClouds.at(iter->first).second,
							_ui->doubleSpinBox_voxelSize_assembled->value());

					//generate indices for all points (they are all valid)
					indices->resize(cloudWithoutNormals->size());
					for(unsigned int i=0; i<cloudWithoutNormals->size(); ++i)
					{
						indices->at(i) = i;
					}
				}
				else
				{
					cloudWithoutNormals = cachedClouds.at(iter->first).first;
					indices = cachedClouds.at(iter->first).second;
				}

				// view point
				Eigen::Vector3f viewPoint(0.0f,0.0f,0.0f);
				std::vector<CameraModel> models;
				StereoCameraModel stereoModel;
				if(cachedSignatures.contains(iter->first))
				{
					const Signature & s = cachedSignatures.find(iter->first).value();
					models = s.sensorData().cameraModels();
					stereoModel = s.sensorData().stereoCameraModel();
				}
				else if(_dbDriver)
				{
					_dbDriver->getCalibration(iter->first, models, stereoModel);
				}

				if(models.size() && !models[0].localTransform().isNull())
				{
					viewPoint[0] = models[0].localTransform().x();
					viewPoint[1] = models[0].localTransform().y();
					viewPoint[2] = models[0].localTransform().z();
				}
				else if(!stereoModel.localTransform().isNull())
				{
					viewPoint[0] = stereoModel.localTransform().x();
					viewPoint[1] = stereoModel.localTransform().y();
					viewPoint[2] = stereoModel.localTransform().z();
				}
				else
				{
					_progressDialog->appendText(tr("Cached cloud %1 is not found in cached data, the view point for normal computation will not be set (%2/%3).").arg(iter->first).arg(index).arg(poses.size()), Qt::darkYellow);
				}

				pcl::PointCloud<pcl::Normal>::Ptr normals = util3d::computeNormals(cloudWithoutNormals, indices, _ui->spinBox_normalKSearch->value(), viewPoint);
				pcl::concatenateFields(*cloudWithoutNormals, *normals, *cloud);
			}
			else
			{
				_progressDialog->appendText(tr("Cached cloud %1 not found. You may want to regenerate the clouds (%2/%3).").arg(iter->first).arg(index).arg(poses.size()), Qt::darkYellow);
			}

			if(indices->size())
			{
				if(_ui->checkBox_filtering->isChecked() &&
					_ui->doubleSpinBox_filteringRadius->value() > 0.0f &&
					_ui->spinBox_filteringMinNeighbors->value() > 0)
				{
					indices = util3d::radiusFiltering(cloud, indices, _ui->doubleSpinBox_filteringRadius->value(), _ui->spinBox_filteringMinNeighbors->value());
				}

				clouds.insert(std::make_pair(iter->first, std::make_pair(cloud, indices)));
				points = (int)cloud->size();
				totalIndices = (int)indices->size();
			}
		}
		else
		{
			UERROR("transform is null!?");
		}

		if(points>0)
		{
			if(_ui->checkBox_regenerate->isChecked())
			{
				_progressDialog->appendText(tr("Generated cloud %1 with %2 points and %3 indices (%4/%5).")
						.arg(iter->first).arg(points).arg(totalIndices).arg(index).arg(poses.size()));
			}
			else
			{
				_progressDialog->appendText(tr("Copied cloud %1 from cache with %2 points and %3 indices (%4/%5).")
						.arg(iter->first).arg(points).arg(totalIndices).arg(index).arg(poses.size()));
			}
		}
		else
		{
			_progressDialog->appendText(tr("Ignored cloud %1 (%2/%3).").arg(iter->first).arg(index).arg(poses.size()));
		}
		_progressDialog->incrementStep();
		QApplication::processEvents();
	}

	return clouds;
}


void ExportCloudsDialog::saveClouds(
		const QString & workingDirectory,
		const std::map<int, Transform> & poses,
		const std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr> & clouds,
		bool binaryMode)
{
	if(clouds.size() == 1)
	{
		QString path = QFileDialog::getSaveFileName(this, tr("Save cloud to ..."), workingDirectory+QDir::separator()+"cloud.ply", tr("Point cloud data (*.ply *.pcd)"));
		if(!path.isEmpty())
		{
			if(clouds.begin()->second->size())
			{
				_progressDialog->appendText(tr("Saving the cloud (%1 points)...").arg(clouds.begin()->second->size()));

				bool success =false;
				if(QFileInfo(path).suffix() == "pcd")
				{
					success = pcl::io::savePCDFile(path.toStdString(), *clouds.begin()->second, binaryMode) == 0;
				}
				else if(QFileInfo(path).suffix() == "ply")
				{
					success = pcl::io::savePLYFile(path.toStdString(), *clouds.begin()->second, binaryMode) == 0;
				}
				else if(QFileInfo(path).suffix() == "")
				{
					//use ply by default
					path += ".ply";
					success = pcl::io::savePLYFile(path.toStdString(), *clouds.begin()->second, binaryMode) == 0;
				}
				else
				{
					UERROR("Extension not recognized! (%s) Should be one of (*.ply *.pcd).", QFileInfo(path).suffix().toStdString().c_str());
				}
				if(success)
				{
					_progressDialog->incrementStep();
					_progressDialog->appendText(tr("Saving the cloud (%1 points)... done.").arg(clouds.begin()->second->size()));

					QMessageBox::information(this, tr("Save successful!"), tr("Cloud saved to \"%1\"").arg(path));
				}
				else
				{
					QMessageBox::warning(this, tr("Save failed!"), tr("Failed to save to \"%1\"").arg(path));
				}
			}
			else
			{
				QMessageBox::warning(this, tr("Save failed!"), tr("Cloud is empty..."));
			}
		}
	}
	else if(clouds.size())
	{
		QString path = QFileDialog::getExistingDirectory(this, tr("Save clouds to (*.ply *.pcd)..."), workingDirectory, 0);
		if(!path.isEmpty())
		{
			bool ok = false;
			QStringList items;
			items.push_back("ply");
			items.push_back("pcd");
			QString suffix = QInputDialog::getItem(this, tr("File format"), tr("Which format?"), items, 0, false, &ok);

			if(ok)
			{
				QString prefix = QInputDialog::getText(this, tr("File prefix"), tr("Prefix:"), QLineEdit::Normal, "cloud", &ok);

				if(ok)
				{
					for(std::map<int, pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr >::const_iterator iter=clouds.begin(); iter!=clouds.end(); ++iter)
					{
						if(iter->second->size())
						{
							pcl::PointCloud<pcl::PointXYZRGBNormal>::Ptr transformedCloud;
							transformedCloud = util3d::transformPointCloud(iter->second, poses.at(iter->first));

							QString pathFile = path+QDir::separator()+QString("%1%2.%3").arg(prefix).arg(iter->first).arg(suffix);
							bool success =false;
							if(suffix == "pcd")
							{
								success = pcl::io::savePCDFile(pathFile.toStdString(), *transformedCloud, binaryMode) == 0;
							}
							else if(suffix == "ply")
							{
								success = pcl::io::savePLYFile(pathFile.toStdString(), *transformedCloud, binaryMode) == 0;
							}
							else
							{
								UFATAL("Extension not recognized! (%s)", suffix.toStdString().c_str());
							}
							if(success)
							{
								_progressDialog->appendText(tr("Saved cloud %1 (%2 points) to %3.").arg(iter->first).arg(iter->second->size()).arg(pathFile));
							}
							else
							{
								_progressDialog->appendText(tr("Failed saving cloud %1 (%2 points) to %3.").arg(iter->first).arg(iter->second->size()).arg(pathFile), Qt::darkRed);
								_progressDialog->setAutoClose(false);
							}
						}
						else
						{
							_progressDialog->appendText(tr("Cloud %1 is empty!").arg(iter->first));
						}
						_progressDialog->incrementStep();
						QApplication::processEvents();
						if(_canceled)
						{
							return;
						}
					}
				}
			}
		}
	}
}

void ExportCloudsDialog::saveMeshes(
		const QString & workingDirectory,
		const std::map<int, Transform> & poses,
		const std::map<int, pcl::PolygonMesh::Ptr> & meshes,
		bool binaryMode)
{
	if(meshes.size() == 1)
	{
		QString path = QFileDialog::getSaveFileName(this, tr("Save mesh to ..."), workingDirectory+QDir::separator()+"mesh.ply", tr("Mesh (*.ply)"));
		if(!path.isEmpty())
		{
			if(meshes.begin()->second->polygons.size())
			{
				_progressDialog->appendText(tr("Saving the mesh (%1 polygons)...").arg(meshes.begin()->second->polygons.size()));
				QApplication::processEvents();
				uSleep(100);
				QApplication::processEvents();

				bool success =false;
				if(QFileInfo(path).suffix() == "")
				{
					path += ".ply";
				}

				if(QFileInfo(path).suffix() == "ply")
				{
					if(binaryMode)
					{
						success = pcl::io::savePLYFileBinary(path.toStdString(), *meshes.begin()->second) == 0;
					}
					else
					{
						success = pcl::io::savePLYFile(path.toStdString(), *meshes.begin()->second) == 0;
					}
				}
				else if(QFileInfo(path).suffix() == "obj")
				{
					success = pcl::io::saveOBJFile(path.toStdString(), *meshes.begin()->second) == 0;
				}
				else
				{
					UERROR("Extension not recognized! (%s) Should be (*.ply).", QFileInfo(path).suffix().toStdString().c_str());
				}
				if(success)
				{
					_progressDialog->incrementStep();
					_progressDialog->appendText(tr("Saving the mesh (%1 polygons)... done.").arg(meshes.begin()->second->polygons.size()));

					QMessageBox::information(this, tr("Save successful!"), tr("Mesh saved to \"%1\"").arg(path));
				}
				else
				{
					QMessageBox::warning(this, tr("Save failed!"), tr("Failed to save to \"%1\"").arg(path));
				}
			}
			else
			{
				QMessageBox::warning(this, tr("Save failed!"), tr("Cloud is empty..."));
			}
		}
	}
	else if(meshes.size())
	{
		QString path = QFileDialog::getExistingDirectory(this, tr("Save meshes to (*.ply *.obj)..."), workingDirectory, 0);
		if(!path.isEmpty())
		{
			bool ok = false;
			QStringList items;
			items.push_back("ply");
			items.push_back("obj");
			QString suffix = QInputDialog::getItem(this, tr("File format"), tr("Which format?"), items, 0, false, &ok);

			if(ok)
			{
				QString prefix = QInputDialog::getText(this, tr("File prefix"), tr("Prefix:"), QLineEdit::Normal, "mesh", &ok);

				if(ok)
				{
					for(std::map<int, pcl::PolygonMesh::Ptr>::const_iterator iter=meshes.begin(); iter!=meshes.end(); ++iter)
					{
						if(iter->second->polygons.size())
						{
							pcl::PolygonMesh mesh;
							mesh.polygons = iter->second->polygons;
							bool isRGB = false;
							for(unsigned int i=0; i<iter->second->cloud.fields.size(); ++i)
							{
								if(iter->second->cloud.fields[i].name.compare("rgb") == 0)
								{
									isRGB=true;
									break;
								}
							}
							if(isRGB)
							{
								pcl::PointCloud<pcl::PointXYZRGB>::Ptr tmp(new pcl::PointCloud<pcl::PointXYZRGB>);
								pcl::fromPCLPointCloud2(iter->second->cloud, *tmp);
								tmp = util3d::transformPointCloud(tmp, poses.at(iter->first));
								pcl::toPCLPointCloud2(*tmp, mesh.cloud);
							}
							else
							{
								pcl::PointCloud<pcl::PointXYZ>::Ptr tmp(new pcl::PointCloud<pcl::PointXYZ>);
								pcl::fromPCLPointCloud2(iter->second->cloud, *tmp);
								tmp = util3d::transformPointCloud(tmp, poses.at(iter->first));
								pcl::toPCLPointCloud2(*tmp, mesh.cloud);
							}

							QString pathFile = path+QDir::separator()+QString("%1%2.%3").arg(prefix).arg(iter->first).arg(suffix);
							bool success =false;
							if(suffix == "ply")
							{
								if(binaryMode)
								{
									success = pcl::io::savePLYFileBinary(pathFile.toStdString(), mesh) == 0;
								}
								else
								{
									success = pcl::io::savePLYFile(pathFile.toStdString(), mesh) == 0;
								}
							}
							else if(suffix == "obj")
							{
								success = pcl::io::saveOBJFile(pathFile.toStdString(), mesh) == 0;
							}
							else
							{
								UFATAL("Extension not recognized! (%s)", suffix.toStdString().c_str());
							}
							if(success)
							{
								_progressDialog->appendText(tr("Saved mesh %1 (%2 polygons) to %3.")
										.arg(iter->first).arg(iter->second->polygons.size()).arg(pathFile));
							}
							else
							{
								_progressDialog->appendText(tr("Failed saving mesh %1 (%2 polygons) to %3.")
										.arg(iter->first).arg(iter->second->polygons.size()).arg(pathFile), Qt::darkRed);
								_progressDialog->setAutoClose(false);
							}
						}
						else
						{
							_progressDialog->appendText(tr("Mesh %1 is empty!").arg(iter->first));
						}
						_progressDialog->incrementStep();
						QApplication::processEvents();
						if(_canceled)
						{
							return;
						}
					}
				}
			}
		}
	}
}

double sqr(uchar v)
{
	return double(v)*double(v);
}

cv::Mat ExportCloudsDialog::mergeTextures(
		pcl::TextureMesh & mesh,
		const QMap<int, Signature> & cachedSignatures,
		const std::vector<std::map<int, pcl::PointXY> > & textureVertexToPixels) const
{
	//get texture size, if disabled use default 1024
	int textureSize = 1024;
	if(_ui->comboBox_meshingTextureSize->currentIndex() > 0)
	{
		textureSize = 128 << _ui->comboBox_meshingTextureSize->currentIndex(); // start at 256
	}
	UDEBUG("textureSize = %d", textureSize);
	cv::Mat globalTexture;
	if(mesh.tex_materials.size() > 1)
	{
		std::vector<int> textures(mesh.tex_materials.size(), -1);
		cv::Size imageSize;
		const int imageType=CV_8UC3;
		UDEBUG("");
		for(unsigned int i=0; i<mesh.tex_materials.size(); ++i)
		{
			if(!mesh.tex_materials[i].tex_file.empty() &&
				mesh.tex_polygons[i].size() &&
			   uIsInteger(mesh.tex_materials[i].tex_file, false))
			{
				int textureId = uStr2Int(mesh.tex_materials[i].tex_file);
				textures[i] = textureId;

				if(imageSize.width == 0 || imageSize.height == 0)
				{
					if(cachedSignatures.find(textureId)!=cachedSignatures.end() && !cachedSignatures.find(textureId)->sensorData().imageCompressed().empty())
					{
						SensorData data = cachedSignatures.find(textureId).value().sensorData();
						if(data.cameraModels().size()==1 &&
							data.cameraModels()[0].imageHeight()>0 &&
							data.cameraModels()[0].imageWidth()>0)
						{
							imageSize = data.cameraModels()[0].imageSize();
						}
						else if(data.stereoCameraModel().left().imageHeight() > 0 &&
								data.stereoCameraModel().left().imageWidth() > 0)
						{
							imageSize = data.stereoCameraModel().left().imageSize();
						}
						else // backward compatibility for image size not set in CameraModel
						{
							cv::Mat image;
							data.uncompressDataConst(&image, 0);
							UASSERT(!image.empty());
							imageSize = image.size();
						}
					}
					else if(_dbDriver)
					{
						std::vector<CameraModel> models;
						StereoCameraModel stereoModel;
						_dbDriver->getCalibration(textureId, models, stereoModel);
						if(models.size()==1 &&
							models[0].imageHeight()>0 &&
							models[0].imageWidth()>0)
						{
							imageSize = models[0].imageSize();
						}
						else if(stereoModel.left().imageHeight() > 0 &&
								stereoModel.left().imageWidth() > 0)
						{
							imageSize = stereoModel.left().imageSize();
						}
						else // backward compatibility for image size not set in CameraModel
						{
							SensorData data;
							_dbDriver->getNodeData(textureId, data, true, false, false, false);
							cv::Mat image;
							data.uncompressDataConst(&image, 0);
							UASSERT(!image.empty());
							imageSize = image.size();
						}
					}
				}
			}
		}
		if(textures.size() && imageSize.height>0 && imageSize.width>0)
		{
			float scale = 0.0f;
			UDEBUG("");
			std::vector<bool> materialsKept;
			util3d::concatenateTextureMaterials(mesh, imageSize, textureSize, scale, &materialsKept);
			if(scale && mesh.tex_materials.size()==1)
			{
				int cols = float(textureSize)/(scale*imageSize.width);

				globalTexture = cv::Mat(textureSize, textureSize, imageType, cv::Scalar::all(255));
				cv::Mat globalTextureMask = cv::Mat(textureSize, textureSize, CV_8UC1, cv::Scalar::all(0));

				// make a blank texture
				cv::Mat emptyImage(int(imageSize.height*scale), int(imageSize.width*scale), imageType, cv::Scalar::all(255));
				cv::Mat emptyImageMask(int(imageSize.height*scale), int(imageSize.width*scale), CV_8UC1, cv::Scalar::all(255));
				int oi=0;
				std::vector<cv::Point2i> imageOrigin(textures.size());
				std::vector<int> newCamIndex(textures.size(), -1);
				for(int t=0; t<(int)textures.size(); ++t)
				{
					if(materialsKept.at(t))
					{
						newCamIndex[t] = oi;
						int u = oi%cols * emptyImage.cols;
						int v = oi/cols * emptyImage.rows;
						UASSERT(u < textureSize-emptyImage.cols);
						UASSERT(v < textureSize-emptyImage.rows);
						imageOrigin[t].x = u;
						imageOrigin[t].y = v;
						if(textures[t]>=0)
						{
							cv::Mat image;

							if(cachedSignatures.find(textures[t]) != cachedSignatures.end() &&
							  !cachedSignatures.find(textures[t])->sensorData().imageCompressed().empty())
							{
								cachedSignatures.find(textures[t])->sensorData().uncompressDataConst(&image, 0);
							}
							else if(_dbDriver)
							{
								SensorData data;
								_dbDriver->getNodeData(textures[t], data, true, false, false, false);
								data.uncompressDataConst(&image, 0);
							}

							UASSERT(!image.empty());
							cv::Mat resizedImage;
							cv::resize(image, resizedImage, emptyImage.size(), 0.0f, 0.0f, cv::INTER_AREA);
							UASSERT(resizedImage.type() == CV_8UC1 || resizedImage.type() == CV_8UC3);
							if(resizedImage.type() == CV_8UC1)
							{
								cv::Mat resizedImageColor;
								cv::cvtColor(resizedImage, resizedImageColor, CV_GRAY2BGR);
								resizedImage = resizedImageColor;
							}
							if(_ui->checkBox_gainCompensation->isChecked() && _compensator && _compensator->getIndex(textures[t]) >= 0)
							{
								_compensator->apply(textures[t], resizedImage);
							}
							UASSERT(resizedImage.type() == globalTexture.type());
							resizedImage.copyTo(globalTexture(cv::Rect(u, v, resizedImage.cols, resizedImage.rows)));
							emptyImageMask.copyTo(globalTextureMask(cv::Rect(u, v, resizedImage.cols, resizedImage.rows)));
						}
						else
						{
							emptyImage.copyTo(globalTexture(cv::Rect(u, v, emptyImage.cols, emptyImage.rows)));
						}
						++oi;
					}
				}

				if(textureVertexToPixels.size())
				{
					//UWARN("Saving original.png", globalTexture);
					//cv::imwrite("original.png", globalTexture);

					if(_ui->checkBox_gainCompensation->isChecked())
					{
						const int num_images = static_cast<int>(oi);
						cv::Mat_<int> N(num_images, num_images); N.setTo(0);
						cv::Mat_<double> I(num_images, num_images); I.setTo(0);

						cv::Mat_<double> IR(num_images, num_images); IR.setTo(0);
						cv::Mat_<double> IG(num_images, num_images); IG.setTo(0);
						cv::Mat_<double> IB(num_images, num_images); IB.setTo(0);

						// Adjust UV coordinates to globalTexture
						for(unsigned int p=0; p<textureVertexToPixels.size(); ++p)
						{
							for(std::map<int, pcl::PointXY>::const_iterator iter=textureVertexToPixels[p].begin(); iter!=textureVertexToPixels[p].end(); ++iter)
							{
								if(materialsKept.at(iter->first))
								{
									N(newCamIndex[iter->first], newCamIndex[iter->first]) +=1;

									std::map<int, pcl::PointXY>::const_iterator jter=iter;
									++jter;
									int k = 1;
									for(; jter!=textureVertexToPixels[p].end(); ++jter, ++k)
									{
										if(materialsKept.at(jter->first))
										{
											int i = newCamIndex[iter->first];
											int j = newCamIndex[jter->first];

											N(i, j) += 1;
											N(j, i) += 1;

											// uv in globalTexture
											int ui = iter->second.x*emptyImage.cols + imageOrigin[iter->first].x;
											int vi = (1.0-iter->second.y)*emptyImage.rows + imageOrigin[iter->first].y;
											int uj = jter->second.x*emptyImage.cols + imageOrigin[jter->first].x;
											int vj = (1.0-jter->second.y)*emptyImage.rows + imageOrigin[jter->first].y;
											cv::Vec3b * pt1 = globalTexture.ptr<cv::Vec3b>(vi,ui);
											cv::Vec3b * pt2 = globalTexture.ptr<cv::Vec3b>(vj,uj);

											I(i, j) += std::sqrt(static_cast<double>(sqr(pt1->val[0]) + sqr(pt1->val[1]) + sqr(pt1->val[2])));
											I(j, i) += std::sqrt(static_cast<double>(sqr(pt2->val[0]) + sqr(pt2->val[1]) + sqr(pt2->val[2])));

											IR(i, j) += static_cast<double>(pt1->val[2]);
											IR(j, i) += static_cast<double>(pt2->val[2]);
											IG(i, j) += static_cast<double>(pt1->val[1]);
											IG(j, i) += static_cast<double>(pt2->val[1]);
											IB(i, j) += static_cast<double>(pt1->val[0]);
											IB(j, i) += static_cast<double>(pt2->val[0]);
										}
									}
								}
							}
						}

						for(int i=0; i<num_images; ++i)
						{
							for(int j=i+1; j<num_images; ++j)
							{
								if(N(i, j))
								{
									I(i, j) /= N(i, j);
									I(j, i) /= N(j, i);

									IR(i, j) /= N(i, j);
									IR(j, i) /= N(j, i);
									IG(i, j) /= N(i, j);
									IG(j, i) /= N(j, i);
									IB(i, j) /= N(i, j);
									IB(j, i) /= N(j, i);
								}
							}
						}

						cv::Mat_<double> A(num_images, num_images); A.setTo(0);
						cv::Mat_<double> b(num_images, 1); b.setTo(0);
						cv::Mat_<double> AR(num_images, num_images); AR.setTo(0);
						cv::Mat_<double> AG(num_images, num_images); AG.setTo(0);
						cv::Mat_<double> AB(num_images, num_images); AB.setTo(0);
						double alpha = 0.01;
						double beta = _ui->doubleSpinBox_gainBeta->value();
						for (int i = 0; i < num_images; ++i)
						{
							for (int j = 0; j < num_images; ++j)
							{
								b(i, 0) += beta * N(i, j);
								A(i, i) += beta * N(i, j);
								AR(i, i) += beta * N(i, j);
								AG(i, i) += beta * N(i, j);
								AB(i, i) += beta * N(i, j);
								if (j == i) continue;
								A(i, i) += 2 * alpha * I(i, j) * I(i, j) * N(i, j);
								A(i, j) -= 2 * alpha * I(i, j) * I(j, i) * N(i, j);

								AR(i, i) += 2 * alpha * IR(i, j) * IR(i, j) * N(i, j);
								AR(i, j) -= 2 * alpha * IR(i, j) * IR(j, i) * N(i, j);

								AG(i, i) += 2 * alpha * IG(i, j) * IG(i, j) * N(i, j);
								AG(i, j) -= 2 * alpha * IG(i, j) * IG(j, i) * N(i, j);

								AB(i, i) += 2 * alpha * IB(i, j) * IB(i, j) * N(i, j);
								AB(i, j) -= 2 * alpha * IB(i, j) * IB(j, i) * N(i, j);
							}
						}

						cv::Mat_<double> gainsGray, gainsR, gainsG, gainsB;
						cv::solve(A, b, gainsGray);

						cv::solve(AR, b, gainsR);
						cv::solve(AG, b, gainsG);
						cv::solve(AB, b, gainsB);

						cv::Mat_<double> gains(gainsGray.rows, 4);
						gainsGray.copyTo(gains.col(0));
						gainsR.copyTo(gains.col(1));
						gainsG.copyTo(gains.col(2));
						gainsB.copyTo(gains.col(3));

						for(int t=0; t<(int)textures.size(); ++t)
						{
							//break;
							if(materialsKept.at(t))
							{
								int u = imageOrigin[t].x;
								int v = imageOrigin[t].y;

								UDEBUG("Gain cam%d = %f", newCamIndex[t], gainsGray(newCamIndex[t], 0));

								cv::Mat roi = globalTexture(cv::Rect(u, v, emptyImage.cols, emptyImage.rows));

								std::vector<cv::Mat> channels;
								cv::split(roi, channels);
								// assuming BGR
								cv::multiply(channels[0], gains(newCamIndex[t], 3), channels[0]);
								cv::multiply(channels[1], gains(newCamIndex[t], 2), channels[1]);
								cv::multiply(channels[2], gains(newCamIndex[t], 1), channels[2]);
								cv::merge(channels, roi);
							}
						}
						//UWARN("Saving gain.png", globalTexture);
						//cv::imwrite("gain.png", globalTexture);
					}

					if(_ui->checkBox_blending->isChecked())
					{
						// blending BGR
						int decimation = 1;
						if(_ui->comboBox_blendingDecimation->currentIndex() == 0)
						{
							// determinate decimation to apply
							std::vector<float> edgeLengths;
							if(mesh.tex_coordinates.size() && mesh.tex_coordinates[0].size())
							{
								UASSERT(mesh.tex_polygons.size() && mesh.tex_polygons[0].size() && mesh.tex_polygons[0][0].vertices.size());
								int polygonSize = mesh.tex_polygons[0][0].vertices.size();
								UDEBUG("polygon size=%d", polygonSize);

								for(unsigned int i=0; i<mesh.tex_coordinates[0].size(); i+=polygonSize)
								{
									for(int j=0; j<polygonSize; ++j)
									{
										const Eigen::Vector2f & uc1 = mesh.tex_coordinates[0][i + j];
										const Eigen::Vector2f & uc2 = mesh.tex_coordinates[0][i + (j+1)%polygonSize];
										Eigen::Vector2f edge = (uc1-uc2)*textureSize;
										edgeLengths.push_back(fabs(edge[0]));
										edgeLengths.push_back(fabs(edge[1]));
									}
								}
								float edgeLength = 0.0f;
								if(edgeLengths.size())
								{
									std::sort(edgeLengths.begin(), edgeLengths.end());
									float m = uMean(edgeLengths.data(), edgeLengths.size());
									float stddev = std::sqrt(uVariance(edgeLengths.data(), edgeLengths.size(), m));
									edgeLength = m+stddev;
									decimation = 1 << 6;
									for(int i=1; i<=6; ++i)
									{
										if(float(1 << i) >= edgeLength)
										{
											decimation = 1 << i;
											break;
										}
									}
								}

								UDEBUG("edge length=%f decimation=%d", edgeLength, decimation);
							}
						}
						else
						{
							decimation = 1 << (_ui->comboBox_blendingDecimation->currentIndex()-1);
							UDEBUG("decimation=%d", decimation);
						}

						cv::Mat blendGains(globalTexture.rows/decimation, globalTexture.cols/decimation, CV_32FC3, cv::Scalar::all(1.0f));
						for(unsigned int p=0; p<textureVertexToPixels.size(); ++p)
						{
							if(textureVertexToPixels[p].size() > 1)
							{
								std::vector<float> gainsB(textureVertexToPixels[p].size());
								std::vector<float> gainsG(textureVertexToPixels[p].size());
								std::vector<float> gainsR(textureVertexToPixels[p].size());
								float sumWeight = 0.0f;
								int k=0;
								for(std::map<int, pcl::PointXY>::const_iterator iter=textureVertexToPixels[p].begin(); iter!=textureVertexToPixels[p].end(); ++iter)
								{
									if(materialsKept.at(iter->first))
									{
										int u = iter->second.x*emptyImage.cols + imageOrigin[iter->first].x;
										int v = (1.0-iter->second.y)*emptyImage.rows + imageOrigin[iter->first].y;
										float x = iter->second.x - 0.5f;
										float y = iter->second.y - 0.5f;
										float weight = 0.7f - sqrt(x*x+y*y);
										if(weight<0.0f)
										{
											weight = 0.0f;
										}
										cv::Vec3b * pt = globalTexture.ptr<cv::Vec3b>(v,u);
										gainsB[k] = static_cast<double>(pt->val[0]) * weight;
										gainsG[k] = static_cast<double>(pt->val[1]) * weight;
										gainsR[k] = static_cast<double>(pt->val[2]) * weight;
										sumWeight += weight;
										++k;
									}
								}
								gainsB.resize(k);
								gainsG.resize(k);
								gainsR.resize(k);

								if(sumWeight > 0)
								{
									float targetColor[3];
									targetColor[0] = uSum(gainsB.data(), gainsB.size()) / sumWeight;
									targetColor[1] = uSum(gainsG.data(), gainsG.size()) / sumWeight;
									targetColor[2] = uSum(gainsR.data(), gainsR.size()) / sumWeight;
									for(std::map<int, pcl::PointXY>::const_iterator iter=textureVertexToPixels[p].begin(); iter!=textureVertexToPixels[p].end(); ++iter)
									{
										if(materialsKept.at(iter->first))
										{
											int u = iter->second.x*emptyImage.cols + imageOrigin[iter->first].x;
											int v = (1.0-iter->second.y)*emptyImage.rows + imageOrigin[iter->first].y;
											cv::Vec3b * pt = globalTexture.ptr<cv::Vec3b>(v,u);
											float gB = targetColor[0]/(pt->val[0]==0?1.0f:pt->val[0]);
											float gG = targetColor[1]/(pt->val[1]==0?1.0f:pt->val[1]);
											float gR = targetColor[2]/(pt->val[2]==0?1.0f:pt->val[2]);
											cv::Vec3f * ptr = blendGains.ptr<cv::Vec3f>(v/decimation, u/decimation);
											ptr->val[0] = (gB>1.3f)?1.3f:(gB<0.7f)?0.7f:gB;
											ptr->val[1] = (gG>1.3f)?1.3f:(gG<0.7f)?0.7f:gG;
											ptr->val[2] = (gR>1.3f)?1.3f:(gR<0.7f)?0.7f:gR;
										}
									}
								}
							}
						}

						/*std::vector<cv::Mat> channels;
						cv::split(blendGains, channels);
						cv::Mat img;
						channels[0].convertTo(img,CV_8U,128.0,0);
						cv::imwrite("blendSmallB.png", img);
						channels[1].convertTo(img,CV_8U,128.0,0);
						cv::imwrite("blendSmallG.png", img);
						channels[2].convertTo(img,CV_8U,128.0,0);
						cv::imwrite("blendSmallR.png", img);*/

						cv::Mat dst;
						cv::blur(blendGains, dst, cv::Size(3,3));
						cv::resize(dst, blendGains, globalTexture.size(), 0, 0, cv::INTER_LINEAR);

						/*cv::split(blendGains, channels);
						channels[0].convertTo(img,CV_8U,128.0,0);
						cv::imwrite("blendFullB.png", img);
						channels[1].convertTo(img,CV_8U,128.0,0);
						cv::imwrite("blendFullG.png", img);
						channels[2].convertTo(img,CV_8U,128.0,0);
						cv::imwrite("blendFullR.png", img);*/

						cv::multiply(globalTexture, blendGains, globalTexture, 1.0, CV_8UC3);

						//UWARN("Saving blending.png", globalTexture);
						//cv::imwrite("blending.png", globalTexture);
					}
				}

				if(_ui->spinBox_textureBrightnessContrastRatioLow->value() > 0 || _ui->spinBox_textureBrightnessContrastRatioHigh->value() > 0)
				{
					if(_ui->checkBox_exposureFusion->isEnabled() && _ui->checkBox_exposureFusion->isChecked())
					{
						std::vector<cv::Mat> images;
						images.push_back(globalTexture);
						if (_ui->spinBox_textureBrightnessContrastRatioLow->value() > 0)
						{
							images.push_back(util2d::brightnessAndContrastAuto(
								globalTexture,
								globalTextureMask,
								(float)_ui->spinBox_textureBrightnessContrastRatioLow->value(),
								0.0f));
						}
						if (_ui->spinBox_textureBrightnessContrastRatioHigh->value() > 0)
						{
							images.push_back(util2d::brightnessAndContrastAuto(
								globalTexture,
								globalTextureMask,
								0.0f,
								(float)_ui->spinBox_textureBrightnessContrastRatioHigh->value()));
						}

						globalTexture = util2d::exposureFusion(images);
					}
					else
					{
						globalTexture = util2d::brightnessAndContrastAuto(
							globalTexture,
							globalTextureMask,
							(float)_ui->spinBox_textureBrightnessContrastRatioLow->value(),
							(float)_ui->spinBox_textureBrightnessContrastRatioHigh->value());
					}
				}
			}
		}
	}
	return globalTexture;
}

void ExportCloudsDialog::saveTextureMeshes(
		const QString & workingDirectory,
		const std::map<int, Transform> & poses,
		std::map<int, pcl::TextureMesh::Ptr> & meshes,
		const QMap<int, Signature> & cachedSignatures,
		const std::vector<std::map<int, pcl::PointXY> > & textureVertexToPixels)
{
	if(meshes.size() == 1)
	{
		QString path = QFileDialog::getSaveFileName(this, tr("Save texture mesh to ..."), workingDirectory+QDir::separator()+"mesh.obj", tr("Mesh (*.obj)"));
		if(!path.isEmpty())
		{
			if(meshes.begin()->second->tex_materials.size())
			{
				_progressDialog->appendText(tr("Saving the mesh (with %1 textures)...").arg(meshes.begin()->second->tex_materials.size()));
				QApplication::processEvents();
				uSleep(100);
				QApplication::processEvents();

				bool success =false;
				if(QFileInfo(path).suffix() == "")
				{
					path += ".obj";
				}

				pcl::TextureMesh::Ptr mesh = meshes.begin()->second;

				cv::Mat globalTexture;
				bool texturesMerged = _ui->comboBox_meshingTextureSize->isEnabled() && _ui->comboBox_meshingTextureSize->currentIndex() > 0;
				if(texturesMerged && mesh->tex_materials.size()>1)
				{
					globalTexture = mergeTextures(*mesh, cachedSignatures, textureVertexToPixels);
				}
				bool singleTexture = mesh->tex_materials.size() == 1;
				if(!singleTexture)
				{
					removeDirRecursively(QFileInfo(path).absoluteDir().absolutePath()+QDir::separator()+QFileInfo(path).baseName());
					QDir(QFileInfo(path).absoluteDir().absolutePath()).mkdir(QFileInfo(path).baseName());
				}
				cv::Size imageSize;
				for(unsigned int i=0; i<mesh->tex_materials.size(); ++i)
				{
					if(!mesh->tex_materials[i].tex_file.empty())
					{
						// absolute path
						QString fullPath;
						if(singleTexture)
						{
							fullPath = QFileInfo(path).absoluteDir().absolutePath()+QDir::separator()+QFileInfo(path).baseName()+_ui->comboBox_meshingTextureFormat->currentText();
						}
						else
						{
							fullPath = QFileInfo(path).absoluteDir().absolutePath()+QDir::separator()+QFileInfo(path).baseName()+QDir::separator()+QString(mesh->tex_materials[i].tex_file.c_str())+_ui->comboBox_meshingTextureFormat->currentText();
						}
						UDEBUG("Saving %s...", fullPath.toStdString().c_str());
						if(singleTexture || !QFileInfo(fullPath).exists())
						{
							if(uIsInteger(mesh->tex_materials[i].tex_file, false))
							{
								int textureId = uStr2Int(mesh->tex_materials[i].tex_file);
								cv::Mat image;
								if(cachedSignatures.contains(textureId) && !cachedSignatures.value(textureId).sensorData().imageCompressed().empty())
								{
									cachedSignatures.value(textureId).sensorData().uncompressDataConst(&image, 0);
								}
								else if(_dbDriver)
								{
									SensorData data;
									_dbDriver->getNodeData(textureId, data, true, false, false, false);
									data.uncompressDataConst(&image, 0);
								}
								UASSERT(!image.empty());
								imageSize = image.size();
								if(_ui->checkBox_gainCompensation->isChecked() && _compensator && _compensator->getIndex(textureId) >= 0)
								{
									_compensator->apply(textureId, image);
								}

								if(!cv::imwrite(fullPath.toStdString(), image))
								{
									_progressDialog->appendText(tr("Failed saving texture \"%1\" to \"%2\".")
											.arg(mesh->tex_materials[i].tex_file.c_str()).arg(fullPath), Qt::darkRed);
									_progressDialog->setAutoClose(false);
								}
							}
							else if(imageSize.height && imageSize.width)
							{
								// make a blank texture
								cv::Mat image = cv::Mat::ones(imageSize, CV_8UC1)*255;
								cv::imwrite(fullPath.toStdString(), image);
							}
							else if(!globalTexture.empty())
							{
								if(!cv::imwrite(fullPath.toStdString(), globalTexture))
								{
									_progressDialog->appendText(tr("Failed saving texture \"%1\" to \"%2\".")
											.arg(mesh->tex_materials[i].tex_file.c_str()).arg(fullPath), Qt::darkRed);
									_progressDialog->setAutoClose(false);
								}
							}
							else
							{
								UWARN("Ignored texture %s (no image size set yet)", mesh->tex_materials[i].tex_file.c_str());
							}
						}
						else
						{
							UWARN("File %s already exists!", fullPath.toStdString().c_str());
						}
						// relative path
						if(singleTexture)
						{
							mesh->tex_materials[i].tex_file=QFileInfo(path).baseName().toStdString()+_ui->comboBox_meshingTextureFormat->currentText().toStdString();
						}
						else
						{
							mesh->tex_materials[i].tex_file=(QFileInfo(path).baseName()+QDir::separator()+QString(mesh->tex_materials[i].tex_file.c_str())+_ui->comboBox_meshingTextureFormat->currentText()).toStdString();
						}
					}
				}

				success = pcl::io::saveOBJFile(path.toStdString(), *mesh) == 0;
				if(success)
				{
					_progressDialog->incrementStep();
					_progressDialog->appendText(tr("Saving the mesh (with %1 textures)... done.").arg(mesh->tex_materials.size()));

					QMessageBox::information(this, tr("Save successful!"), tr("Mesh saved to \"%1\"").arg(path));
				}
				else
				{
					QMessageBox::warning(this, tr("Save failed!"), tr("Failed to save to \"%1\"").arg(path));
				}
			}
			else
			{
				QMessageBox::warning(this, tr("Save failed!"), tr("No textures..."));
			}
		}
	}
	else if(meshes.size())
	{
		QString path = QFileDialog::getExistingDirectory(this, tr("Save texture meshes to (*.obj)..."), workingDirectory, 0);
		if(!path.isEmpty())
		{
			bool ok = false;
			QString prefix = QInputDialog::getText(this, tr("File prefix"), tr("Prefix:"), QLineEdit::Normal, "mesh", &ok);
			QString suffix = "obj";

			if(ok)
			{
				for(std::map<int, pcl::TextureMesh::Ptr>::iterator iter=meshes.begin(); iter!=meshes.end(); ++iter)
				{
					QString currentPrefix=prefix+QString::number(iter->first);
					if(iter->second->tex_materials.size())
					{
						pcl::TextureMesh::Ptr mesh = iter->second;
						cv::Mat globalTexture;
						bool texturesMerged = _ui->comboBox_meshingTextureSize->isEnabled() && _ui->comboBox_meshingTextureSize->currentIndex() > 0;
						if(texturesMerged && mesh->tex_materials.size()>1)
						{
							globalTexture = mergeTextures(*mesh, cachedSignatures, textureVertexToPixels);
						}
						bool singleTexture = mesh->tex_materials.size() == 1;
						if(!singleTexture)
						{
							removeDirRecursively(path+QDir::separator()+currentPrefix);
							QDir(path).mkdir(currentPrefix);
						}
						cv::Size imageSize;
						for(unsigned int i=0;i<mesh->tex_materials.size(); ++i)
						{
							if(!mesh->tex_materials[i].tex_file.empty())
							{
								// absolute path
								QString fullPath;
								if(singleTexture)
								{
									mesh->tex_materials[i].tex_file = uNumber2Str(iter->first);
									fullPath = path+QDir::separator()+prefix + QString(mesh->tex_materials[i].tex_file.c_str())+_ui->comboBox_meshingTextureFormat->currentText();
								}
								else
								{
									fullPath = path+QDir::separator()+currentPrefix+QDir::separator()+QString(mesh->tex_materials[i].tex_file.c_str())+_ui->comboBox_meshingTextureFormat->currentText();
								}
								if(uIsInteger(mesh->tex_materials[i].tex_file, false))
								{
									int textureId = uStr2Int(mesh->tex_materials[i].tex_file);
									cv::Mat image;
									if(cachedSignatures.contains(textureId) && !cachedSignatures.value(textureId).sensorData().imageCompressed().empty())
									{
										cachedSignatures.value(textureId).sensorData().uncompressDataConst(&image, 0);
									}
									else if(_dbDriver)
									{
										SensorData data;
										_dbDriver->getNodeData(textureId, data, true, false, false, false);
										data.uncompressDataConst(&image, 0);
									}

									UASSERT(!image.empty());
									imageSize = image.size();
									if(_ui->checkBox_gainCompensation->isChecked() && _compensator && _compensator->getIndex(textureId) >= 0)
									{
										_compensator->apply(textureId, image);
									}

									if(!cv::imwrite(fullPath.toStdString(), image))
									{
										_progressDialog->appendText(tr("Failed saving texture \"%1\" to \"%2\".")
												.arg(mesh->tex_materials[i].tex_file.c_str()).arg(fullPath), Qt::darkRed);
										_progressDialog->setAutoClose(false);
									}
								}
								else if(imageSize.height && imageSize.width)
								{
									// make a blank texture
									cv::Mat image = cv::Mat::ones(imageSize, CV_8UC1)*255;
									cv::imwrite(fullPath.toStdString(), image);
								}
								else if(!globalTexture.empty())
								{
									if(!cv::imwrite(fullPath.toStdString(), globalTexture))
									{
										_progressDialog->appendText(tr("Failed saving texture \"%1\" to \"%2\".")
												.arg(mesh->tex_materials[i].tex_file.c_str()).arg(fullPath), Qt::darkRed);
										_progressDialog->setAutoClose(false);
									}
								}
								else
								{
									UWARN("Ignored texture %s (no image size set yet)", mesh->tex_materials[i].tex_file.c_str());
								}
								// relative path
								if(singleTexture)
								{
									mesh->tex_materials[i].tex_file=(prefix+ QString(mesh->tex_materials[i].tex_file.c_str())+_ui->comboBox_meshingTextureFormat->currentText()).toStdString();
								}
								else
								{
									mesh->tex_materials[i].tex_file=(currentPrefix+QDir::separator()+QString(mesh->tex_materials[i].tex_file.c_str())+_ui->comboBox_meshingTextureFormat->currentText()).toStdString();
								}
							}
						}
						pcl::PointCloud<pcl::PointNormal>::Ptr tmp(new pcl::PointCloud<pcl::PointNormal>);
						pcl::fromPCLPointCloud2(mesh->cloud, *tmp);
						tmp = util3d::transformPointCloud(tmp, poses.at(iter->first));
						pcl::toPCLPointCloud2(*tmp, mesh->cloud);

						QString pathFile = path+QDir::separator()+QString("%1.%3").arg(currentPrefix).arg(suffix);
						bool success =false;
						if(suffix == "obj")
						{
							success = pcl::io::saveOBJFile(pathFile.toStdString(), *mesh) == 0;
						}
						else
						{
							UFATAL("Extension not recognized! (%s)", suffix.toStdString().c_str());
						}
						if(success)
						{
							_progressDialog->appendText(tr("Saved mesh %1 (%2 textures) to %3.")
									.arg(iter->first).arg(mesh->tex_materials.size()).arg(pathFile));
						}
						else
						{
							_progressDialog->appendText(tr("Failed saving mesh %1 (%2 textures) to %3.")
									.arg(iter->first).arg(mesh->tex_materials.size()).arg(pathFile), Qt::darkRed);
							_progressDialog->setAutoClose(false);
						}
					}
					else
					{
						_progressDialog->appendText(tr("Mesh %1 is empty!").arg(iter->first));
					}
					_progressDialog->incrementStep();
					QApplication::processEvents();
					if(_canceled)
					{
						return;
					}
				}
			}
		}
	}
}

}