CIECAM

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CIECAM

• Because they are limited to the trichromatic
  outputs from the L, M and S cones, both CIELUV
  and CIELAB only model the color information
  generated by the photoreceptor response to small
  and isolated color samples. They cannot model
  many of the contextual effects of color
  perception, including luminance adaptation
  (surround illuminance levels), chromatic contrast
  or chromatic assimilation that arise in real
  world viewing conditions with heterogeneous,
  strongly contrasted, or three dimensional color
  stimuli.

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Graphical summary of CIECAMinput values and
parameters

• Surround relative luminance
• Average for reflection prints
• Dim for CRTs
• Dark for projected transparencies
• Interpolation possible estimate c, interpolate
  others

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Equations and Definitions

• F and Nc contrast factors
• c exponent
• D luminance adaptation factor
• La surround luminance
• FL luminance-level factor
• Nbb and Ncb induction factors
• z and n nonlinearity exponents

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To fundamentals that more closely represent
coneresponsivities
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Primaries for further computation
Opponent colors
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