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rtabmap_ros/rtabmap_examples/launch/realsense_d435i_stereo.launch.py
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2025-11-01 13:09:39 -07:00

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Python

# Requirements:
# A realsense D435i
# Install realsense2 ros2 package (ros-$ROS_DISTRO-realsense2-camera)
# Example:
# $ ros2 launch rtabmap_examples realsense_d435i_stereo.launch.py
#
#
#
#
# VINS-Fusion example:
# Add to your ros2 workspace the package https://github.com/zinuok/VINS-Fusion-ROS2
# Apply this patch https://gist.github.com/matlabbe/ebbb343cd744da9d6d6d6ded2e1557fd
# -> Revert "#define USE_GPU" change if you want to build VINS-Fusion with GPU support.
# That may be counterintuitive, but we need to build VINS-Fusion first, then rebuild rtabmap with VINS-Fusion support.
# -> in your ros2 workspace, do "colcon build --packages-select vins"
# -> go back under rtabmap library repo, then rebuild/install with "cmake -DWITH_VINS_FUSION=ON ..."
# -> do "colcon build" in your ros2 workspace again to rebuild rtabmap_ros
# $ ros2 launch rtabmap_examples realsense_d435i_stereo.launch.py odom_args:="--Odom/Strategy 9 OdomVINSFusion/ConfigPath ~/ros2_ws/src/VINS-Fusion-ROS2/config/realsense_d435i/realsense_stereo_imu_config.yaml"
# -> set "imu: 1" in realsense_stereo_imu_config.yaml to do stereo inertial odometry, otherwise only stereo odometry is done.
#
import os
from ament_index_python.packages import get_package_share_directory
from launch import LaunchDescription
from launch_ros.actions import Node, SetParameter
from launch.actions import IncludeLaunchDescription
from launch.actions import DeclareLaunchArgument, IncludeLaunchDescription
from launch.launch_description_sources import PythonLaunchDescriptionSource
from launch.substitutions import LaunchConfiguration
def generate_launch_description():
parameters={
'frame_id':'camera_link',
'subscribe_stereo':True,
'subscribe_odom_info':True,
'wait_imu_to_init':True}
remappings=[
('imu', '/imu/data'),
('left/image_rect', '/camera/infra1/image_rect_raw'),
('left/camera_info', '/camera/infra1/camera_info'),
('right/image_rect', '/camera/infra2/image_rect_raw'),
('right/camera_info', '/camera/infra2/camera_info')]
return LaunchDescription([
# Launch arguments
DeclareLaunchArgument(
'unite_imu_method', default_value='2',
description='0-None, 1-copy, 2-linear_interpolation. Use unite_imu_method:="1" if imu topics stop being published.'),
#Hack to disable IR emitter
SetParameter(name='depth_module.emitter_enabled', value=0),
DeclareLaunchArgument(
'args', default_value='',
description='Extra arguments set to rtabmap and odometry nodes.'),
DeclareLaunchArgument(
'odom_args', default_value='',
description='Extra arguments just for odometry node. If the same argument is already set in \"args\", it will be overwritten by the one in \"odom_args\".'),
# Launch camera driver
IncludeLaunchDescription(
PythonLaunchDescriptionSource([os.path.join(
get_package_share_directory('realsense2_camera'), 'launch'),
'/rs_launch.py']),
launch_arguments={'camera_namespace': '',
'enable_gyro': 'true',
'enable_accel': 'true',
'unite_imu_method': LaunchConfiguration('unite_imu_method'),
'enable_infra1': 'true',
'enable_infra2': 'true',
'enable_sync': 'true'}.items(),
),
Node(
package='rtabmap_odom', executable='stereo_odometry', output='screen',
parameters=[parameters],
arguments=[LaunchConfiguration("args"), LaunchConfiguration("odom_args")],
remappings=remappings),
Node(
package='rtabmap_slam', executable='rtabmap', output='screen',
parameters=[parameters],
remappings=remappings,
arguments=['-d', LaunchConfiguration("args")]),
Node(
package='rtabmap_viz', executable='rtabmap_viz', output='screen',
parameters=[parameters,
{'odometry_node_name': "stereo_odometry"}],
remappings=remappings),
# Compute quaternion of the IMU
Node(
package='imu_filter_madgwick', executable='imu_filter_madgwick_node', output='screen',
parameters=[{'use_mag': False,
'world_frame':'enu',
'publish_tf':False}],
remappings=[('imu/data_raw', '/camera/imu')]),
])