color depth

(redirected from Pixel depth)
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color depth

The number of bits used to hold a screen pixel. Also called "pixel depth" and "bit depth," the color depth is the maximum number of colors that can be displayed. True Color (24-bit color) is required for photorealistic images and video, and modern graphics cards support this bit depth.

Per Pixel or Per Subpixel
The color depth of a screen can be referenced by the number of bits in each subpixel or by the total bits per pixel. For example, 8-bit color and 24-bit color often mean the same thing (see table below). The 8-bits refers to each red, green and blue subpixel, while 24-bit means all three. Likewise, 10-bit color subpixels and 30-bit color pixels are the same. See indexed color and bit depth.
Bitsper   BitsSub   per   Total   Common Pxl.  Pxl.  Colors  Designation

        1       2    (monochrome)
        2       4
        3       8
        4      16    (VGA)
        8     256    (Super VGA)
 5-6** 16     65K    (High Color)
   8   24     16.7M  (True Color)
   8   32     16.7M  (True Color + alpha)
  10   30      1.1G  (Deep Color)
  12   36     64G    (Deep Color)
  16   48    256T    (Deep Color)

 ** Red/Blue 5 bits; Green 6 bits


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References in periodicals archive ?
by experimentation it has been observed that, for an image with 8-bit pixel depth, the algorithm produces satisfactory results for primes greater than 223.
In the experiment, each pixel depth of the scene was linearly (by equal distance intervals) or non-linearly (by domain specifications) quantized to the discrete number of pixel depth value, from the initial 16-bit (65536 scales) to 1-bit (2 scales) depth to generate the DIBR 9-view intermediate images.
Cameras that automatically capture per pixel depth with the video are available and are being further enhanced, but the quality of the captured depth fields is currently still limited.
Photron's powerful ultra-high speed imaging system offers superior light sensitivity and 12-bit pixel depth (analog-to-digital converters, or ADC).
The global electronic shutter operates down to 1 microsecond to provide blur free, B&W imagery with 12-bit pixel depth (36-bits for the color version).
The Phantom has a 12-bit pixel depth with the 1920x1080 resolution in the standard mode with three auxiliary power outlets for viewfinders and other external devices such as lenses from Canon, Nikon, and Panasonic.
The REALiS WUXIO features a 0.71-inch LCoS reflective LCD panel, a contrast ratio of 1,000:1, a brightness of 3,200 ANSI lumens, and a 10-bit pixel depth for outstanding image quality.
At 30-bit pixel depth, four times more shades of gray would be the minimum, and the typical improvement would be eight times or more