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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 7 — Jul. 16, 2007

Application of the S-CIELAB color model to processed and calibrated images with a colorimetric dithering method

E. Chorro, E. Perales, D. de Fez, M. J. Luque, and F. M. Martínez-Verdú  »View Author Affiliations

Optics Express, Vol. 15, Issue 12, pp. 7810-7817 (2007)

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This work uses the S-CIELAB color model to compare images that have been calibrated and processed using a colorimetric dithering method which simulates increments in viewing distance. Firstly, we obtain XYZ calibrated images by applying the appropriate color transformations to the original images. These transformations depend on whether the image is viewed on a display device or encoded by a capture device, for example. Secondly, we use a colorimetric dithering method consisting of a partitive additive mixing of XYZ tristimulus values. The number of dithered pixels depends on simulated viewing distance. The dithered tristimulus values are transformed to digital data to observe the dithering effects in the image. Finally, we predict color differences using the S-CIELAB model as color appearance model for images. Moreover, this paper proposes some applications of this method to artistic and industrial problems where one must compare two images that appear different at close viewing distance, but match when they are seen from afar.

© 2007 Optical Society of America

OCIS Codes
(110.0110) Imaging systems : Imaging systems
(110.3000) Imaging systems : Image quality assessment
(150.0150) Machine vision : Machine vision
(150.3040) Machine vision : Industrial inspection
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.1730) Vision, color, and visual optics : Colorimetry

ToC Category:
Vision and color

Original Manuscript: February 23, 2007
Revised Manuscript: May 14, 2007
Manuscript Accepted: May 16, 2007
Published: June 8, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

E. Chorro, E. Perales, D. de Fez, M. J. Luque, and F. M. Martínez-Verdú, "Application of the S-CIELAB color model to processed and calibrated images with a colorimetric dithering method," Opt. Express 15, 7810-7817 (2007)

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