Changing one type of color-encoded signal into another. Converting from RGB to YUV and back to RGB are common color space conversions when working with video formats (see YUV). Converting from the display color space (RGB) to the printer color space (CMYK) is another common example. Color spaces may have different gamuts (color ranges), and conversion may result in a loss of color. See CIE Lab and color space.
Also known as color sampling. A step in the video compression process that involves the reduction of color information in the image.As the human eye is not highly sensitive to slight color variations, the impact is not noticeable. Black and white are prioritized, as the human eye is very sensitive at that level to differences in total brightness. See also compression.