some refactoring
some more refactoring
implemented OpenCL version of cv::fastNlMeansDenoising
more fixes
small fixes
hope it finally works
some improvements
fixed for 2 channels
added color image support via L*a*b*
small fixes
changes according to reviewer's suggestions
experiments
3 channel support to cv::transpose
cv::compare
Merge pull request #2382 from ilya-lavrenov:tapi_nlmeans
Merge pull request #2459 from ilya-lavrenov:tapi_experiments
Merge pull request #2466 from ilya-lavrenov:tapi_transpose_3cn
TAPI: added perf test for stitching
TAPI: stitching, replaced Mat->UMat/_Array
features2d: workaround for 'utrainDescCollection' issue (PR #2142)