Color Depth - Direct Color

Direct Color

As the number of bits increases, the number of possible colors becomes impractically large for a color map. So in higher color depths, the color value typically directly encodes relative brightnesses of red, green, and blue to specify a color in the RGB color model. Other color spaces can also be used.

A typical computer monitor and video card may offer 8 bits of color precision (256 output levels) per R/G/B color channel, for an overall 24-bit color space (or 32-bit space, with alpha transparency bits, which have little bearing on the color precision), though earlier standards offered 6 bits per channel (64 levels) or less; the DVD standard defines up to 10 bits of color precision (1024 levels) for each of the Y/U/V video encoding channels (luminance plus two chrominance channels). The Blu-ray standard only supports 8 bits of color precision per channel.

Read more about this topic:  Color Depth

Famous quotes containing the words direct and/or color:

    I, who travel most often for my pleasure, do not direct myself so badly. If it looks ugly on the right, I take the left; if I find myself unfit to ride my horse, I stop.... Have I left something unseen behind me? I go back; it is still on my road. I trace no fixed line, either straight or crooked.
    Michel de Montaigne (1533–1592)

    ‘Twas mercy brought me from my Pagan land,
    Taught my benighted soul to understand
    That there’s a God, that there’s a Saviour too:
    Once I redemption neither sought nor knew.
    Some view our sable race with scornful eye,
    “Their color is a diabolic die.”
    Remember, Christians, Negroes, black as Cain,
    May be refin’d, and join th’ angelic train.
    Phillis Wheatley (c. 1753–1784)