Redirected from Color model
Some colorspaces in wide use are:
Commercial color spaces:
Reference color spaces:
|Additive color mixing||Subtractive color mixing|
RGBA is used similarly as RGB, but it has an additional channel, alpha, to indicate transparency.
CMYK is a subtractive color[?] space used in the printing process. One starts with a white canvas, and uses ink to subtract color from white to create an image. CMYK stores ink values for cyan, magenta, yellow and black.
YIQ[?] is used in NTSC (North American) television broadcasts for historical reasons. YIQ[?] stores a luminance value with two chrominance values, corresponding approximately to the amounts of blue and red in the color. It corresponds closely to the YUV (also called YCC or more accurately YCbCr) scheme used in PAL television and JPEG image compression.
HSV is often used by artists because it is often more natural to think about a color in terms of hue and saturation than in terms of additive or subtractive color components. HSV stores a hue value, a saturation value and an intensity value.
Once you've decided which color space you want to work in, if you are working on a computer, you must then address the problem of color space encoding.
There are also a number of reference color spaces, used in more serious applications.
Early color spaces had two components. They largely ignored blue light because the added complexity of a 3-component process was much less of a marginal increase in fidelity than the jump from monochrome to 2-component color.