cv rgb2gray python_OpenCV 颜色空间转换参数CV_BGR2GRAY改变
enum{COLOR_BGR2BGRA=0,COLOR_RGB2RGBA=COLOR_BGR2BGRA,COLOR_BGRA2BGR=1,COLOR_RGBA2RGB=COLOR_BGRA2BGR,COLOR_BGR2RGBA=2,COLOR_RGB2BGRA=COLOR_BGR2RGBA,COLOR_RGBA2BGR=3,COLOR_BGRA2RGB=COLOR_RGBA2BGR,COLOR_B...
