FREAK descriptor

[Mohamed Gad-elrab]

Hey all,

I have few questions about FREAK implementation in opencv I really need to know to continue:

1. I cannot get what the 64 values (columns) returned for each keypoint ? FREAK should return binary values as I understand?

2. I used BruteForceMatcher<Hamming> like in FREAK_demo.cpp in opencv samples. however it always give matches that may be wrong .. so I want to filter result ... I want to use the distance variable in the DMatch object returned but I cannot get what it representing in case of Hamming distance?.. should I take the big distances or small ??  what is the expected range for it ?  I cannot find in any documentation

I hope someone can help

Thank you in advance

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Best Regards,

Mohamed Gad-Elrab

[Alexander Smorkalov]

Hello Mohamed Gad-elrab,
I suggest you to post your question on official Q&A OpenCV forum.