Naive impl. Slower than CPU
Optimized version. Faster than CPU
added tests
added documentation
moved documentation of BriefDescriptorExtractor to correct place
Fixed doc
Merge branch 'master' of https://github.com/Itseez/opencv into brief_cl
merge with upstream
Merge branch 'master' of https://github.com/Itseez/opencv into brief_cl
Merge branch 'master' of https://github.com/Itseez/opencv into brief_cl
Type conversions to fix warnings
added new macros useful for tracking whether OpenCL impl run or not
Move OpticalFlowPyrLK from ocl module to video module
Fix error with some opencl functions on the build WITH_OPENCL=OFF
Validate parameters for using OpenCL version, before upload UMat
Fix builds errors
Fix builds errors
Add perfomance test
Grow up epsilon for sanity checks
Change method of setting arguments to kernel to safe one