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M squared (M2) is a measure of how well a laser beam can be focused or collimated. It is calculated from the ratio of the beam parameter product of the beam to that of a Gaussian beam with the same wavelength.
The IPT color appearance model excels at providing a formulation for hue where a constant hue value equals a constant perceived hue independent of the values of lightness and chroma (which is the general ideal for any color appearance model, but hard to achieve). It is therefore well-suited for gamut mapping implementations.
Colorfulness is the perceived chromatic intensity of an area, which depends on its spectral reflectance and illumination. Learn about the differences and similarities between colorfulness, chroma and saturation, and how they are measured and quantified in various color spaces and models.
YCbCr is a family of color spaces that transforms RGB primaries and white point into luma and chroma components. It is used for efficient storage, transmission and processing of color images, and has different scaling and offset values for digital and analog signals.
HCL (Hue-Chroma-Luminance) or LCh refers to any of the many cylindrical color space models that are designed to accord with human perception of color with the three parameters. Lch has been adopted by information visualization practitioners to present data without the bias implicit in using varying saturation .
AOL Mail offers secure and personalized email with features like AOL Mail, news, and weather for free. You can also access your email on the go with an iOS & Android app and get help from experts.
Example of U-V color plane, Y′ value = 0.5, represented within RGB color gamut An image along with its Y′, U, and V components respectively. Y′UV, also written YUV, is the color model found in the PAL analogue color TV standard. A color is described as a Y′ component and two chroma components U and V.
Color theory is the study of how colors behave and interact, with applications in art, science and technology. Learn about the origins, developments and controversies of color theory, from Aristotle to modern color science.