OpenCvSharp - Code is giving different results while debugging and in release mode.

[shimat]

OpenCvSharp - Code is giving different results while debugging and in release mode.

[shimat]

The stackoverflow page is so interesting and informative for me, thank you.

I checked the OpenCV SURF implementation. SURF descriptors are calculated by float (CV_32F). I think it would be very difficult to resolve this problem...

[milanloveajax]

Do you have any other method of achieving this without any kind of such error?

[shimat]

A solution is to use other SURF implementation.
For example, original SURF implementation defines descriptors as double.
http://www.vision.ee.ethz.ch/~surf/download_ac.html

Many SURF implementations are listed here:
http://it.wikipedia.org/wiki/Speeded_Up_Robust_Feature

[milanloveajax]

Hi,
Based on your suggestion, I tried another SURF implementation from the following website.

https://code.google.com/p/directcv/

The code is working completely fine with that wrapper.

So what is wrong with your wrapper? Why is it giving two different results in debug and exe mode?

[shimat]

Hmm... the P/Invoke entry point is the same between DirectCV and OpenCvSharp.
DirectCV is for OpenCV2.2. Perhaps the difference of the SURF implementation between OpenCV 2.2 and 2.4.8 occurs this problem.

By the way, is your environment x86? I could demonstrate the problem in x86 build, but could not demonstrate in x64.

[milanloveajax]

Yes my environment is x86.

[shimat]

Perhaps using x64 is a solution. I will continue researching this problem.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.