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[This has broader applications than computer science; can someone reorganise and/or expound?] |
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The RGB color space is an additive color space which models the way light of a few specific frequencies are combined when travelling in the same direction. RGB is known as an additive color space because when light of two different frequencies travel together, from the point of view of an observer, these colors are added to create a new color experience. In particular, the colors which the RGB color space concerns itself with are the red, green and blue frequencies (hence the RGB acronym). These three frequencies are chosen because each one corresponds with one of the three types of color-sensitive cones in the human eye. With the appropriate combination of red, green and blue light, one can reproduce any color which can be experienced by a human. For more information on how humans percieve color, see the entry on color itself. |
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The RGB color space is the most common used to display computer graphics on a monitor. For each pixel in the image, independent values for red, green and blue (hence the RGB acronym) are stored. These three colors correspond to the three types of color-sensitive cones in the human eye, and can therefore reproduce any color percievable by humans which happens to be between the [black level]? and [white point]? of the monitor being used to display the image. Typically these values vary between zero and 255. |
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One common application of the RGB color space to display computer graphics on a monitor. For each pixel in the image, independent values for red, green and blue are stored. There is a fixed range of red, green and blue intensities displayable by the computer monitor, but by choosing the appropriate combination of red, green and blue light, one can therefore generate any color percievable by humans which happens to be between the [black level]? and [white point]? of the monitor being used to display the image. Typically the values stored vary between zero and 255. |
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