ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange

Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

0

No diparity image for stereo vision using prosilica cameras

asked 2014-11-11 03:35:40 -0500

180 ●18 ●25 ●30

updated 2014-11-14 01:40:52 -0500

1471 ●7 ●17 ●33 http://srv.uib.es/

I have started working with two prosilica cameras for stereo vision. At first I downloaded the driver package for prosilica camera driver. I developed two launch files for two cameras in syncin1 and in fixed rate mode. Now after launching the files both the cameras are working. I have checked using rqt as well

rosrun image_view image_view image:=stereo/left/image_raw

but the topic /stereo/disparity is not showing anything. If I try to view the disparity image using

rosrun image_view disparity_view image:=stereo/disparity

it pops a window but there is nothing. Even in rqt if i go for visualization in the topic list the /stereo/disparity topic is not in the list. I am really stuck in here. Any help will appreciable.

Thanks in advance.

edit retag flag offensive close merge delete

1 Answer

Sort by » oldest newest most voted

1

answered 2014-11-11 09:16:59 -0500

1471 ●7 ●17 ●33 http://srv.uib.es/

Hi saptarshi,

first, you have to run stereo_image_proc and then calibrate the cameras with a chekerboard, as explained here. Once the calibration has been saved (or commited), then the disparity image should be available from the topic in stereo_image_proc.

I have a similar setup (two color GigE AVT Manta sync'd), and decided to implement a new driver using the new AVT API VIMBA. The ros node is available here. I'd be very grateful if you could give it a try.

edit flag offensive delete link

Comments

hey I have done the calibration and commit it. but still if i view the disparity image using "rosrun image_view disparity_view image:=/stereo/disparity" the pop-up window is empty. I have modified the disparity parameter as well but still it is not working.

Robot ( 2014-11-12 04:00:40 -0500 )edit

Can you show us your launchfile?

Miquel Massot ( 2014-11-14 01:38:25 -0500 )edit

Saptarshi, check that you are also receiving images from your right camera and that those and synchronized.

Miquel Massot ( 2014-11-14 01:41:54 -0500 )edit

1

thanks a lot... I have checked. we have to add _approximate_sync:=True and _queue_size:=10 arguments with the stereo_view node..

Robot ( 2014-11-14 02:45:31 -0500 )edit

Question Tools

1 follower

Stats

Asked: 2014-11-11 03:35:40 -0500

Seen: 483 times

Last updated: Nov 14 '14

Related questions

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.

Powered by Askbot version 0.10.2