return 4;
case COLOR_BGRA2BGR: case COLOR_RGBA2BGR: case COLOR_RGB2BGR:
+ case COLOR_HSV2RGB: case COLOR_HSV2BGR: case COLOR_RGB2HSV: case COLOR_BGR2HSV:
+ case COLOR_HLS2RGB: case COLOR_HLS2BGR: case COLOR_RGB2HLS: case COLOR_BGR2HLS:
+ case COLOR_HSV2RGB_FULL: case COLOR_HSV2BGR_FULL: case COLOR_RGB2HSV_FULL: case COLOR_BGR2HSV_FULL:
+ case COLOR_HLS2RGB_FULL: case COLOR_HLS2BGR_FULL: case COLOR_RGB2HLS_FULL: case COLOR_BGR2HLS_FULL:
case COLOR_YUV2RGB: case COLOR_YUV2BGR: case COLOR_RGB2YUV: case COLOR_BGR2YUV:
case COLOR_BGR5652BGR: case COLOR_BGR5552BGR: case COLOR_BGR5652RGB: case COLOR_BGR5552RGB:
case COLOR_GRAY2BGR: