HammingLUT 95 modules/flann/include/opencv2/flann.hpp using ::cvflann::HammingLUT; HammingLUT 466 modules/flann/include/opencv2/flann/dist.h HammingLUT lut; HammingLUT 334 modules/flann/src/miniflann.cpp typedef ::cvflann::HammingLUT HammingDistance;