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tristimulus    
三色刺激; 三色激励

三色刺激; 三色激励


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  • Tristimulus system | Color Measurement Analysis | Britannica
    Tristimulus system, a system for visually matching a colour under standardized conditions against the three primary colours—red, green, and blue; the three results are expressed as X, Y, and Z, respectively, and are called tristimulus values For example, the tristimulus values of the emerald-green
  • Tristimulus colorimeter - Wikipedia
    A tristimulus colorimeter, colloquially shortened to colorimeter or colourimeter, is used in digital imaging to profile and calibrate output devices It takes a limited number of wideband spectral energy readings along the visible spectrum by using filtered photodetectors ; e g silicon photodiodes
  • Color Perception - HyperPhysics
    Tristimulus Values Any color which can be produced by the primary colors blue, green, and red can be written: where B,G,R can be considered to be "unit values" for blue, green, and red and B,G,R are the magnitudes or relative intensities of those primaries and are called "tristimulus values"
  • Why Understanding Tristimulus Values and the CIE Color Model . . .
    Tristimulus values and the CIE color model are valuable for color measurements because they: Quantify color: Tristimulus values from a spectrophotometer give colors a quantifiable measurement value Objectify color: Tristimulus values are an objective — and reliable — measurement because the spectrophotometer cannot be influenced
  • TriStimulus
    These three values are called the tristimulus (trī stim' yə ləs) values of a color The values are a measurement of the relative intensities of each light source additive primary color needed for our eyes to sense that specific color The tristimulus values are usually given in the X, Y and Z values of the CIE color space The Eye
  • Understanding Tristimulus Values the CIE Color System
    Tristimulus values measure light intensity based on the three primary color values (RGB), typically represented by X, Y, and Z coordinates The tristimulus values system is the foundation of color language, also referred to as the CIE color system , and is used to communicate precise color values around the world
  • Chromaticity Coordinates X,Y,Z specify a color’s: Lightness . . .
    • Tristimulus values X,Y,Z specify a color’s: – Lightness - light or dark – Hue - red, orange, yellow, green, blue, purple – Saturation - pink-red; pastel-fluorescent; baby blue-deep blue • The chromaticity specifies the hue and saturation, but not the lightness x = X X +Y +Z y = Y X +Y +Z z = Z X +Y +Z
  • Differences between tristimulus method and spectrophotometric . . .
    The instrument's microcomputer then calculates the tristimulus values from the spectral reflectance data by performing integration For the apple used in the example, the tristimulus values are X=21 21, Y=13 37, and Z=9 32; these tristimulus values can then be used to calculate values in other color spaces such as Yxy or L * a * b *





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