mbaros's profile - activity

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

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

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

@saedrna, did you find the correct one?

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.

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.

Yes, I did that and that worked.

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.