Color and brightness constancies depend reciprocally on saturation
Color and brightness constancies may not be independent, since increasing a sample saturation should decrease the demand on the color constancy and increase that on the brightness constancy [Color Res. Appl.43, 630 (2018)CREADU0361-231710.1002/col.22227]. We tested this claim using color and brightn...
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| Published in | Journal of the Optical Society of America. A, Optics, image science, and vision Vol. 37; no. 4; p. A237 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
01.04.2020
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| Online Access | Get more information |
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| Summary: | Color and brightness constancies may not be independent, since increasing a sample saturation should decrease the demand on the color constancy and increase that on the brightness constancy [Color Res. Appl.43, 630 (2018)CREADU0361-231710.1002/col.22227]. We tested this claim using color and brightness constancy data from Foster et al. [Vis. Res.41, 285 (2001)VISRAM0042-698910.1016/S0042-6989(00)00239-X], whose observers made side-by-side and successive comparisons of central patches ("asymmetric matches") presented in pairs of identical Mondrian displays with simulated illuminants of 25000 K and 6700 K daylights. Saturations (CIE "chroma") of the central patches varied from 0.007 to 0.092. For most observers (as in a toy Gaussian model of the surface reflectance spectra), increasing saturation reduced color constancy and increased brightness constancy. |
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| ISSN: | 1520-8532 |
| DOI: | 10.1364/josaa.380746 |