color depth

(redirected from 48-bit color)

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 number of bits per pixel. For example, 8-bit color and 24-bit color can mean the same system. The 8-bits refers to each red, green and blue subpixel, while the 24-bit means all three subpixels. Likewise, 10-bit color (subpixels) and 30-bit color (pixels) are the same. See indexed color and bit depth.

Bits Per Pixel    Total Colors

    4    16  (Standard VGA)
    8    256 (Super VGA, indexed color)
   15    32K (option on earlier cards)
   16    65K (High Color)
   24    16M (True Color)
   32    16M (True Color + alpha channel)
   30     1B (Deep Color)
   36    68B (Deep Color)
   48   260T (Deep Color)

References in periodicals archive ?
High density 48-bit color graphics and 16-bit monochrome data capture
HDMI xvYCC and DeepColor technologies deliver support for up to 48-bit color depths that go beyond the traditional 32-bit color depths for more vibrant colors and richer black-levels.
The difference between the OpticFilm and many other scanners is an LED light source, which provides even, vivid illumination of the film or negative in 48-bit color or 16-bit grayscale.
Digitization specialists Diane Bockrath and Ariel Tabritha have been photographing pages for more than a year, using a 33-megapixel camera to produce raw images in 48-bit color.
With unbelievable hardware resolution of 4800 x 9600 dpi with 48-bit color scanning and 3.
Deep color: HDMI will support 30-bit, 36-bit and 48-bit color depths for stunning rendering of over one billion colors in unprecedented detail.
The cross-platform CX6400 also offers 48-bit color scanning at 1,200 x 2,400 dpi and built-in card slots for scan-to-card technology.
HP plans to include Kofax's MRS software with its top-of-the-line Scanjet 8290 model flatbed scanner, which features 4,800-optical-dpi resolution and 48-bit color and comes with a transparency adapter built directly into the lid of the scanner.
Stored images are processed in up to 48-bit color or 12/8-bit grayscale that can be pooled with other documents and sent across the network or exported for instant reporting using the MS-Word link.
At $129, the Astra 4450 48-bit color scanner features 1200 x 2400 dpi resolution, USB connectivity and programmable push-button controls, affordable for the consumer and SOHO markets and scalable to meet the needs of power users.
99, the device can scan up to 1200 x 1200 dpi in 48-bit color and comes bundled with a suite of document and image management software that streamlines scanning processes.