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A model of how interreflections can affect color appearance

MPG-Autoren
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Langer,  MS
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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MPIK-TR-70.pdf
(Verlagsversion), 183KB

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Zitation

Langer, M.(1999). A model of how interreflections can affect color appearance (70). Tübingen, Germany: Max Planck Institute for Biological Cybernetics.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0013-E639-6
Zusammenfassung
Most studies of surface color appearance ignore 3-D illumination phenomena such as shadows and interreflections. In this paper I
address these phenomena directly. I consider a family of ideal
surfaces, namely spherical concavities excavated from a ground plane
and illuminated under uniform diffuse lighting. The color signal
reflected from such surfaces is described by a simple mathematical
model. I use this model and CIELAB coordinates to perform a parametric
study of how the lightness, hue, and chroma of the reflected color
signal vary with the concavity aperture. I find that interreflections
significantly affect the color appearance of a spherical concavity, but only if the surface has high lightness.