RGB2Lab_b        5074 modules/imgproc/src/color.cpp     RGB2Lab_b(int _srccn, int blueIdx, const float* _coeffs,
RGB2Lab_b        8273 modules/imgproc/src/color.cpp                     CvtColorLoop(src, dst, RGB2Lab_b(scn, bidx, 0, 0, srgb));