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https://github.com/introlab/rtabmap_ros.git
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78 lines
3.0 KiB
Python
Executable File
78 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python
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import roslib
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import rospy
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import os
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import tf
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import numpy
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import evaluate_ate
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from nav_msgs.msg import Path
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from geometry_msgs.msg import Pose
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from geometry_msgs.msg import Point
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def callback(data):
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global slamPoses
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global gtPoses
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global stamps
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global listener
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global lastSize
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global slamPosesInd
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global rmse
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if lastSize != len(data.poses):
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t = rospy.Time(data.poses[len(data.poses)-1].header.stamp.secs, data.poses[len(data.poses)-1].header.stamp.nsecs)
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try:
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listener.waitForTransform(fixedFrame, baseFrame, t, rospy.Duration(0.2))
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(trans,rot) = listener.lookupTransform(fixedFrame, baseFrame, t)
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gtPoses.append(Pose(trans, rot))
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stamps.append(t.to_sec())
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slamPoses.append(data.poses[len(data.poses)-1].pose)
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slamPosesInd.append(len(data.poses)-1)
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first_xyz = numpy.empty([0,3])
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second_xyz = numpy.empty([0,3])
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for g in gtPoses:
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newrow = [g.position[0],g.position[1],g.position[2]]
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first_xyz = numpy.vstack([first_xyz, newrow])
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for p in slamPoses:
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newrow = [p.position.x,p.position.y,p.position.z]
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second_xyz = numpy.vstack([second_xyz, newrow])
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first_xyz = numpy.matrix(first_xyz).transpose()
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second_xyz = numpy.matrix(second_xyz).transpose()
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rot,trans,trans_error = evaluate_ate.align(second_xyz, first_xyz)
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rmse_v = numpy.sqrt(numpy.dot(trans_error,trans_error) / len(trans_error))
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rmse.append(rmse_v)
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print "points= " + str(len(data.poses)) + " added=" + str(len(slamPoses)) + " rmse=" + str(rmse_v)
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except (tf.LookupException, tf.ConnectivityException, tf.ExtrapolationException), e:
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print str(e)
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if len(data.poses) > 0 and len(slamPosesInd) > 0:
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j=0
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for i in slamPosesInd:
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slamPoses[j] = data.poses[i].pose
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j+=1
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lastSize = len(data.poses)
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if __name__ == '__main__':
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rospy.init_node('sync_path_gt', anonymous=True)
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listener = tf.TransformListener()
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fixedFrame = rospy.get_param('~fixed_frame_id', 'world')
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baseFrame = rospy.get_param('~frame_id', 'base_link_gt')
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rospy.Subscriber("mapPath", Path, callback, queue_size=1)
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slamPoses = []
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gtPoses = []
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stamps = []
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slamPosesInd = []
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rmse = []
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lastSize = 0
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rospy.spin()
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fileSlam = open('slam_poses.txt','w')
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fileGt = open('gt_poses.txt','w')
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fileRMSE = open('rmse.txt','w')
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print "slam= " + str(len(slamPoses))
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print "gt= " + str(len(gtPoses))
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print "stamps= " + str(len(stamps))
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for c, g, t, r in zip(slamPoses, gtPoses, stamps, rmse):
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fileSlam.write('%f %f %f 0 0 0 0 1\n' % (t, c.position.x, c.position.y))
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fileGt.write('%f %f %f 0 0 0 0 1\n' % (t, g.position[0], g.position[1]))
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fileRMSE.write('%f %f\n' % (t, r))
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fileSlam.close()
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fileGt.close()
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fileRMSE.close()
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