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Estimation of Color-Difference Formulae at Color Discrimination Threshold Using CRT-Generated Stimuli

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Abstract

The advanced color-difference formulae, CMC, CIE94, and the recently proposed CIEDE2000 formula, together with the basic CIELAB system, were estimated using the chromaticity discrimination threshold data at CIE Gray and Blue color centers. Gray is the most basic color and blue is, perceptually, in the most different region from other areas across the color space. The test stimuli, evenly distributed in the (a#x2217;, b#x2217;)-, (a#x2217;, L#x2217;)-, and (b#x2217;, L#x2217;)-plane of the CIELAB space, were generated on a CRT display, driven by a VSG system. Each direction from each color center was assessed 3 times by a panel of 9 normal color-vision observers with the psychophysical method of interleaved staircase. The experimental data were reliable and consistent with other studies according to the observer accuracy and fitted ellipse parameters. A comprehensive analysis shows the color discrimination tolerances could be well fitted by ellipses, and the CIEDE2000 and CIELAB formulae performed better than CIE94 while the CMC worst at the threshold level for the color centers studied.

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Authors and Affiliations

  1. Department of Information and Image Sciences, Chiba, University, 1-33 Yayoi-cko, Inage-ku, Chiba, 263-8522, Japan

    Haisong Xu, Hirohisa Yaguchi & Satoshi Shioiri

  2. State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, 310027, China

    Haisong Xu

Authors
  1. Haisong Xu
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  2. Hirohisa Yaguchi
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  3. Satoshi Shioiri
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Correspondence to Haisong Xu.

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Xu, H., Yaguchi, H. & Shioiri, S. Estimation of Color-Difference Formulae at Color Discrimination Threshold Using CRT-Generated Stimuli. OPT REV 8, 142–147 (2001). https://doi.org/10.1007/s10043-001-0142-1

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  • DOI: https://doi.org/10.1007/s10043-001-0142-1

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