Hi,
I've implemented code to add rotation invariance to the BRIEF descriptor:
cpp: https://github.com/GilLevi/opencv_contrib/blob/master/modules/xfeatures2d/src/ri_brief.cpp
header: https://github.com/GilLevi/opencv_contrib/blob/master/modules/xfeatures2d/include/opencv2/xfeatures2d.hpp
tutorial: https://github.com/GilLevi/opencv/blob/master/samples/cpp/tutorial_code/xfeatures2D/RI_BRIEF_match.cpp
The approach is explained and evaluated in my blog post: https://gilscvblog.wordpress.com/2015/01/02/adding-rotation-invariance-to-the-brief-descriptor/
Can someone please review my code and tell me what additional work is required in order to make a pull request?
Thanks! Gil.