COLOR_RGBA2BGR    503 modules/imgproc/include/opencv2/imgproc.hpp     COLOR_BGRA2RGB     = COLOR_RGBA2BGR,
COLOR_RGBA2BGR     93 modules/imgproc/perf/perf_cvt_color.cpp     COLOR_RGBA2BGR, COLOR_RGBA2BGR555, COLOR_RGBA2BGR565, COLOR_RGBA2GRAY,
COLOR_RGBA2BGR    225 modules/imgproc/perf/perf_cvt_color.cpp     case COLOR_RGBA2BGR: case CX_RGBA2HLS:
COLOR_RGBA2BGR   6701 modules/imgproc/src/color.cpp     case COLOR_RGBA2BGR: case COLOR_RGB2BGR: case COLOR_BGRA2RGBA: