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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 9 — Sep. 1, 2006
  • pp: 2077–2084

Performance of a color-difference formula based on OSA-UCS space using small–medium color differences

Rafael Huertas, Manuel Melgosa, and Claudio Oleari  »View Author Affiliations

JOSA A, Vol. 23, Issue 9, pp. 2077-2084 (2006)

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An investigation of the color metrics and the complexity of the CIEDE2000 formula shows that CIELAB space is inadequate to represent small–medium color differences. The OSA-UCS (Uniform Color Space) Committee has shown that no space with uniform scale for large color differences exists. Therefore the practical way for color-difference specification is a color-difference formula in a nonuniform space. First, the BFD (Bradford University) ellipses are considered in the OSA-UCS space, and their very high regularity suggests a new and very simple color-difference formula at constant luminance. Then the COM (combined) data set used for the development of the CIEDE2000 formula is considered in the OSA-UCS space, and the color-difference formula is extended to sample pairs with a different luminance factor. The value of the performance factor PF 3 for the proposed OSA-UCS-based formula shows that the formula performs like the more complex CIEDE2000 formula for small–medium color differences.

© 2006 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(330.1710) Vision, color, and visual optics : Color, measurement
(330.1720) Vision, color, and visual optics : Color vision
(330.1730) Vision, color, and visual optics : Colorimetry

ToC Category:
Vision and color

Original Manuscript: June 10, 2005
Revised Manuscript: December 18, 2005
Manuscript Accepted: December 29, 2005

Virtual Issues
Vol. 1, Iss. 10 Virtual Journal for Biomedical Optics

Rafael Huertas, Manuel Melgosa, and Claudio Oleari, "Performance of a color-difference formula based on OSA-UCS space using small-medium color differences," J. Opt. Soc. Am. A 23, 2077-2084 (2006)

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