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A uniform color space (UCS) is a color model that seeks to make the color-making attributes perceptually uniform, i.e. identical spatial distance between two colors equals identical amount of perceived color difference. A CAM under a fixed viewing condition results in a UCS; a UCS with a modeling of variable viewing conditions results in a CAM.
CIELAB produces a color space that is more perceptually linear than other color spaces. Perceptually linear means that a change of the same amount in a color value should produce a change of about the same visual importance. CIELAB has almost entirely replaced an alternative related Lab color space called “Hunter Lab”. This space is ...
It was designed to be computed via simple formulas from the CIEXYZ space, but to be more perceptually uniform. Hunter named his coordinates L , a and b . Hunter Lab was a precursor to CIELAB , created in 1976 by the International Commission on Illumination (CIE), which named the coordinates for CIELAB as L* , a* , b* to distinguish them from ...
CIELCh uv is a perceptually uniform color space consisting of lightness, chroma and hue coordinates. It is derived from the CIELUV space, usually based on the 2° observer and the standard Illuminant D65 representing daylight. h uv is an angle that is normally given in degrees. L* is in the range 0 to +100.
This is a list of software palettes used by computers. Systems that use a 4-bit or 8-bit pixel depth can display up to 16 or 256 colors simultaneously. Many personal computers in the early 1990s displayed at most 256 different colors, freely selected by software (either by the user or by a program) from their wider hardware's RGB color palette.
CIELUV is an Adams chromatic valence color space and is an update of the CIE 1964 (U*, V*, W*) color space (CIEUVW). The differences include a slightly modified lightness scale and a modified uniform chromaticity scale, in which one of the coordinates, v′, is 1.5 times as large as v in its 1960 predecessor.
The asterisks in the exponent indicates that the variable represent a more perceptually uniform color space than its predecessor (compare with CIELAB). Günter Wyszecki invented the UVW color space in order to be able to calculate color differences without having to hold the luminance constant.
In colorimetry the OSA-UCS (Optical Society of America Uniform Color Scales) is a color space first published in 1947 and developed by the Optical Society of America’s Committee on Uniform Color Scales. [1] Previously created color order systems, such as the Munsell color system, failed to represent perceptual uniformity in all directions.