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Discussion

Kubelka Munk theory relates

  • A.reflectance to the ratio of absorption to scattering coefficients
  • B.reflectance to the sum of absorption and scattering coefficients
  • C.the tristimulus values to how the illuminant is distributed
  • D.the additive mixture of two lights to their components

Answer: A

The K over S function is approximately additive in colourant concentration. This is what makes computer colour matching arithmetically tractable. Concentration enters approximately linearly. That linearity is what makes matching feasible.

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