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2017-10-19 08:06:14 -0500 marked best answer OpenCV without FFMPEG and GStreamer does not decode a media file

Hi,

Recently, I built the OpenCV 3.3 under Windows with FFMPEG and GStreamer disabled. I noticed that with_DSHOW flag was enabled meaning that even without FFMPEG and GStreamer, OpenCV has to be able to import and decode basic media files (mp4, mov) using DirectShow.

Is there anyone who tried similar experiments and might know why it is not working? Maybe video decoding is still unavailable through DirectShow or I am missing something?

Thanks

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2017-10-19 06:28:19 -0500 edited question OpenCV without FFMPEG and GStreamer does not decode a media file

OpenCV without FFMPEG and GStreamer does not decode a media file Hi, Recently, I built the OpenCV 3.3 under Windows wit

2017-10-19 06:27:33 -0500 asked a question OpenCV without FFMPEG and GStreamer does not decode a media file

OpenCV without FFMPEG and GStreamer does not decode a media file Hi, Recently, I built the OpenCV 3.3 under Windows wit

2017-02-07 10:54:48 -0500 commented question origin pixel in the image coordinate system in opencv

@saedrna, did you find the correct one?

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2016-01-17 06:09:19 -0500 asked a question Descriptor difference on the same keypoints

I am getting a different keypoint angle when I am trying to compute the same thing in 2 different ways:

1.

detectAndCompute(img1, noArray(), kpts1, noArray(), false);
detectAndCompute(img1, noArray(), kpts1, desc1, true);

2.

detectAndCompute(img1, noArray(), kpts1, desc1);

I am getting a difference only on the keypoint angle (not a significant), which makes also descriptors to be different.

I am using KAZE keypoint extractor (OpenCV 3.0.0)

Any help on this?

Thank you.

2015-11-07 09:28:06 -0500 asked a question test data for optical flows with results.

I have recently used the Farneback and DualTVL1 optical flows in some applications and now I wonder if there is some test data for them with already computed correct results.

Thanks in advance.

2015-10-01 03:12:00 -0500 answered a question header for keyline

Yes, I did that and that worked.

2015-09-22 02:58:48 -0500 asked a question header for keyline

I was trying to use the line_descriptor class (BinaryDescriptorMatcher) and for that I had to use the KeyLine structure.

When I try to include the "descriptor.hpp" is says that can't fine the file.

How can I fix this?

Thank you.