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2013-02-26 22:24:16 -0500 asked a question Segmentation fault when using "gpu::PyrLKOpticalFlow::dense"

I am using OpenCV-2.4.3 on Ubuntu 11.10. When I run the demo algorithm "pyrlk_optical_flow_gpu" provided in the sample, I get a segmentation error!! It seems that this error is in the function "PyrLKOpticalFlow::dense"

Did any one experienced the same problem?? Is it a bug in that release of OpenCV or am I doing something wrong? Any help or feedback will be very appreciated.


2012-11-29 19:48:30 -0500 asked a question Permission denied for downloading OpenCV from ""


I have problems downloading OpenCV (with GPU module) from Even with an account in ROS, I get the "Permission denied". Any help? Thank you

2012-11-28 01:10:07 -0500 received badge  Student (source)
2012-11-27 20:10:58 -0500 asked a question Real-time optic flow with OpenCV GPU CUDA

Hi, Does anyone tried or have information about the real-time performance of the OpenCV GPU module for computing dense optic flow for different image resolution (eg. VGA or HD)? Which optic flow algorithms are ported into GPU and which ones are more efficient OR/AND accurate? Thank you very much.