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Calibrating videre stereo camera

asked 2011-08-18 16:01:06 -0500

avin111 gravatar image

updated 2011-08-18 16:17:48 -0500

Hi, I am trying to use the camera calibration package of ros to calibrate the videre stereo camera.The drivers of this stereo camera are from the videre_stereo_cam(ua_ros_pkg).When i tried to calibrate the camera using camera_calibration package it said that there were no services that are required to run the package.link text.So i used the --no-service-check option and then ran the camera calibration package but it is unable to commit the values.it is giving the following errors.

traceback (most recent call last):

File "/home/srik/ros/diamondback/camera_calibration/nodes/cameracalibrator.py", line 213, in on_mouse

if self.do_upload():

File "/home/srik/ros/diamondback/camera_calibration/nodes/cameracalibrator.py", line 184, in do_upload

response = self.set_left_camera_info_service(info[0])

File "/opt/ros/diamondback/stacks/ros_comm/clients/rospy/src/rospy/impl/tcpros_service.py", line 418, in __call__

return self.call(*args, **kwds)

File "/opt/ros/diamondback/stacks/ros_comm/clients/rospy/src/rospy/impl/tcpros_service.py", line 477, in call

service_uri = self._get_service_uri(request)

File "/opt/ros/diamondback/stacks/ros_comm/clients/rospy/src/rospy/impl/tcpros_service.py", line 445, in _get_service_uri

raise ServiceException("service [%s] unavailable"%self.resolved_name)

rospy.service.ServiceException: service [/stereo/left/set_camera_info] unavailable

From this i understood that due to the lack of those services it is not able to commit the values.Is there any other method to commit the values. Did anyone use this camera calibration package to calibrate videre stereo camera.If so please help me how to proceed from here.Thanking you

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answered 2011-08-22 06:24:47 -0500

arebgun gravatar image

videre_stereo_cam package does not expose services that allow you to store calibration information on camera. The only reason they are not there is because we did not have a need to calibrate a camera since they came factory calibrated and worked well for us. There are methods that deal with parsing and creating calibration information of which I only used the parsing part (see stereoimage.cpp file towards the end of the file). I would think it should be fairly simple to add those services and I would certainly accept a patch if you end up implementing those (I could also help with development if you are willing to test).

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Asked: 2011-08-18 16:01:06 -0500

Seen: 520 times

Last updated: Aug 22 '11