How to make opencv and ROS work together?

asked 2012-02-11 13:08:33 -0500

metal
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updated 2012-02-12 00:09:02 -0500

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I have been stuck on this issue for days .I am trying to access image using ros and then do simple opencv algorithms like canny edge.

I do cmake and when I rosmake this particular issue keeps rising from cv_bridge.H. "//usr/local/lib/libopencv_gpu.so.2.3: undefined reference to `cv::gpu::GpuMat::release()'"

I installed the CUDA driver and it says the same error again.What am I doing wrong here? I thought ROS and OPENCV are compatible but it does not seem like that seem that all.

Please share your perspective.

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Please do not shout.

ahendrix ( 2012-02-11 13:59:41 -0500 )edit

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answered 2012-02-11 14:01:19 -0500

ahendrix

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This is linking a problem with opencv, and the fact that you're using the CUDA libraries.

I suggest you implement your algorithm first without using GPU acceleration, evaluate its performance and then try to use the GPU only if you really need it.

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I am really not interested in using GPU acceleration.Could you please tell me what changes I should do in order to avoid the CUDA problem.Is it a necessity for ros and opencv application?.If there is an other way you are certainly welcomed to share your perspective. thank you.

metal ( 2012-02-11 16:27:14 -0500 )edit

It may be that your installation of opencv is broken in some way. How have you installed ROS and opencv? Which linux distro are you using?

ahendrix ( 2012-02-11 17:10:17 -0500 )edit

I installed opencv in the home folder and the programs in opencv are working very well.ROS electric sits in the home folder too and the ROS programs works perfectly fine (ros electric with the lastedt vision_opencv). I am working in ubnutu 10.10. I thought that CUDA is a pre-requiste for ros and opencv to work together.

metal ( 2012-02-12 04:29:21 -0500 )edit

If you've installed opencv into your home directory, that could definitely be causing this problem, since it looks like you're linking against a system install of opencv. Can you list or link to the exact steps you used to install opencv?

ahendrix ( 2012-02-13 07:12:07 -0500 )edit

Thanks for your concern again.I did svn checkout of the opencv from sourceforge.net which brought the opencv in my home folder and then I had to go to sample code section where the cpp files are held and make it.The programs are working good..

metal ( 2012-02-13 18:58:40 -0500 )edit

metal ( 2012-02-13 18:58:43 -0500 )edit

An other thing ROS-ELECTRIC has vision_opencv in its stacks.It has the CV_BRIDGE and other files.

metal ( 2012-02-13 19:07:04 -0500 )edit

I'm guessing that you have opencv installed twice, and that's it's causing problems. What is the output from 'dpkg -l libopencv*' ? Why don't you have ROS and opencv installed from debs?

ahendrix ( 2012-02-14 06:29:55 -0500 )edit

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How to make opencv and ROS work together?

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