Color space

Coloroid

The Coloroid Color System is a color space developed between 1962 and 1980 by Prof. at the Budapest University of Technology and Economics for use by "architects and visual constructors". Since August 2000, the Coloroid has been registered as Hungarian Standard MSZ 7300. Like the OSA-UCS and Munsell systems, the Coloroid attempts to model a perceptually uniform color space or UCS. However the UCS standard applied in the Coloroid system is equal appearing increments in color when the entire range of colors is presented to the viewer, in contrast to the standard of equal "just noticeable" or small color differences between pairs of similar colors presented in isolation. Colors in the Coloroid color space are fundamentally specified according to the perceptual attributes of "luminosity" (luminance factor, V), "saturation" (excitation purity, T) and hue (the matching or dominant spectral wavelength, A). The VAT components are used to define a cylindrical color geometry, with V as the achromatic vertical axis (lightness or brightness), T as the horizontal distance from the achromatic axis (chroma), and A as the hue angle around the hue circle. The circumferential limits of this cylinder are defined by the spectrum locus, or colors as they appear in a single wavelength of light (or a mixture of single "violet" and "red" wavelengths); this ambit varies vertically in V around the hue circle, showing whether the relative luminance or brightness of each wavelength is high (yellow hue) or low (violet blue hue). This defines the outer perceptual limits of the color space. Within this is the smaller perceptual volume defined by the limit of colors it is possible to reproduce with physical media (material colors). Here the VAT perceptual attributes can be approximately matched using the three stimulus or material color components of pure hue or pure colorant (p), white colorant (w) and black colorant (s) in relative proportions whose sum must always equal 1. (Implicitly, p may be any matching single "spot" colorant or matching mixture of two "primary" colorants.) The Coloroid technical documentation defines the conceptual equations necessary to transform the Coloroid perceptual components VAT into the corresponding stimulus components, using the CIE XYZ 1931 colormatching functions with the D65 CIE illuminant. Hues are identified according to the hue angle ψ, measured on the CIE 1931 xy chromaticity plane. These stimulus attributes in turn must be standardized or gamut mapped into a specific colorant system or color reproduction technology in order to reproduce the Coloroid color space as physical color exemplars or a color atlas. However, a Coloroid Colour Atlas is available that provides color exemplars at 16 levels of lightness out to as many as 13 increments in saturation for each of for 48 hue planes. Within the Coloroid system, color harmonies or "harmonics" can be defined through simple linear or geometrical combinations of colors. (Wikipedia).

Coloroid
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Color and Refraction

What is color? What is it that determines the color of an object? And what the heck is refraction? Good thing we just learned about electromagnetic radiation! Especially the visible spectrum. Let's take a look. Watch the whole Classical Physics playlist: http://bit.ly/ProfDavePhysics1 Mo

From playlist Classical Physics

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Beginning Graphic Design: Color

In this video, you’ll learn the basics of using color in graphic design. Visit https://www.gcflearnfree.org/beginning-graphic-design/color/1/ for our text-based lesson. This video includes information on: • Hue, saturation, and value • Creating monochromatic, analogous, and other color sc

From playlist Graphic Design

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Can You Believe It? #16 How Do We See in Color?

Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn how and why we actually see color. Previous video in this series can be seen at: https://youtu.be/VqdVQPgn3-g Next vid

From playlist CAN YOU BELIEVE IT?

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Counterexample

Watch more videos on http://www.brightstorm.com/math/geometry SUBSCRIBE FOR All OUR VIDEOS! https://www.youtube.com/subscription_center?add_user=brightstorm2 VISIT BRIGHTSTORM.com FOR TONS OF VIDEO TUTORIALS AND OTHER FEATURES! http://www.brightstorm.com/ LET'S CONNECT! Facebook ► https

From playlist Geometry

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How Animals Can Change Colors

Iridescence is a natural phenomenon that changes the color of objects based on the angle we view them. Many animals including peacocks, butterflies, and snakes, have special structures that cast this shiny glow. It happens when color wavelengths interfere with each other. Science Insider

From playlist Animal Science

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Do I See Colors the Same Way You Do?

Is the way you see color the same way everyone else does? And for that matter, what about those who are color blind? Anthony throws on his rose-colored glasses and takes a look. Read More: "Hues and views: A cross-cultural study reveals how language shapes color perception" http://www.a

From playlist DNews Favorites

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Is Your Eye Color Real?

PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Check out Say It Loud from PBSDS ►► https://www.youtube.com/SayItLoudPBS SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub The

From playlist Be Smart - LATEST EPISODES!

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3D printing - with a twist

A rotating nozzle that can print with multiple different materials at the same time has been used to print helix shapes with intriguing properties. The researchers who developed the system have experimented with printing a kind of artificial muscle and with changing the properties a length

From playlist Technology

Related pages

CIE 1931 color space | OSA-UCS | Munsell color system | Color space | Color difference