Color difference metrics and surround effects: preliminary results

R. Victor Klassen

doi:10.1117/12.464522

6 June 2002 Color difference metrics and surround effects: preliminary results

R. Victor Klassen

Proceedings Volume 4421, 9th Congress of the International Colour Association; (2002) https://doi.org/10.1117/12.464522
Event: 9th Congress of the International Color Association, 2001, Rochester, NY, United States

Abstract

Whereas both the CMC color difference metric and CIE94 show a considerable dependence on chroma, our measurements of contrast sensitivity show little or no such dependence. That is, the sensitivity to spatial variations in lightness, chroma and hue do not appear to depend on chroma, at least not to an extent greater than inter-observer variability. A key difference between a contrast sensitivity experiment and a color matching experiment is that the background color is the former is of necessity the mean color of the grating, whereas the background in the latter is typically a neutral gray of specified reflectivity or luminance. Goodman hypothesized that the chroma dependence in CMC and CIE94 may result from distance from background, rather than distance from neutral; the experiments reported here test that hypothesis. Results are only preliminary: a single combination of hue and lightness was used throughout the experiments, however they indicated at least partial agreement with Goodman's hypothesis.

Citation Download Citation

R. Victor Klassen "Color difference metrics and surround effects: preliminary results", Proc. SPIE 4421, 9th Congress of the International Colour Association, (6 June 2002); https://doi.org/10.1117/12.464522

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