color model


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color model

[′kəl·ər ‚mäd·əl]
(graphic arts)
Any method of representing colors for printing or electronic display.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

color model

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

color space

A system for describing color numerically. Also known as a "color model," the most widely used color spaces are RGB for scanners, cameras and displays, CMYK for color printing and YUV for TV/video. Prior to the proliferation of electronic displays, which are all RGB, color spaces were developed that were closer to the way people think about color. For example, the CIE Lab model uses lightness (L) and values on red-green (a) and blue-yellow (b) axes, while HSB uses hue, saturation and brightness. See CIE Lab, HSB, HSL, RGB, sRGB, YUV, xvYCC and color space conversion.


HSB, CIE Lab, RGB and CMYK
All four color spaces in this Photoshop color picker relate to each other. Although numbers can be entered, users mostly move the vertical slider or point into the box to select a color. In this example, the R in RGB is selected, and moving the slider changes Red from 0 to 255 and all related values in the other color spaces at the same time.







A More Intuitive Model
In the 1970s, Alvy Ray Smith developed the HSB model for color selection. Changing red to pink by reducing saturation (S) is more intuitive than changing green and blue in RGB. For details, see HSB. For invaluable information about color spaces and computer graphics (CG) from one of the country's most distinguished experts, visit www.alvyray.com, and click Papers and CG.







Color Space Conversion
Since displays, printers and TV/video all use different color spaces, conversion between them is necessary and commonplace.
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References in periodicals archive ?
Saeed Arain, PRO to DIG Traffic, said that the area DSP after investigation reported that vehicle No.CN-8977, Suzuki Hi-Roof, green color model 2005 was not being used for transportation of school children.
The major types are monochrome and color model. They are also known as machine vision systems.
* Color model offers a 12 megapixel CCD sensor with a size of 1" (16 mm diagonal) to deliver live images with high acquisition speed
* The RGB color model is an additive color model in which red, green and blue light are added together in various ways to reproduce a broad array of colors.
Shu Lee et al (2007) proposed a novel method that detects nude image based on adaptive and extensible skin color model, which determines the image skin chroma distribution online so that it can tolerate the chromatic deviation coming from special lighting without increasing false alarm.The performance of the naked image detection extremely depends on the accurate skin segmentation.
It will also be available in a fresh coat of paint with the white color model ((http://cnet3.cbsistatic.com/hub/i/r/2014/05/13/1fecb62e-937f-4484-919c-8739c4aad33c/thumbnail/770x433/d406a153be5ed307e873962b4fb1409a/moto-g-4g-crave.jpg) photo ) selling alongside the original black color model.
17 ( ANI ): Google, which made its wearable eye device Google Glass available online in the United States Tuesday for just one day, sold out the white, or 'Cotton' color model, becoming the star seller.
In his directive, the DPWH head prescribed "painting steel bridges with medium tone international orange by using CMYK (cyan/magenta/yellow/black) color model 0, 72, 77 and 24, respectively." "The paint color mixture shall be prepared using computerized process by the paint manufacturer or its accredited outlet," said Singson.
His methodology tends toward generative systems, as in his "Chronochromes" series, 2009--(to be prominently featured at MIT), in which the calendar is tied to the turn-of-the-century numerical color model of Albert H.
Barnes & Noble introduced a color version of its Nook reader--the first color model from a leading vendor--while Amazon debuted a third-generation Kindle.