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Green Image
Issue No. 03 - May/June (2005 vol. 25)
ISSN: 0272-1716
pp: 22-30
Karl Rasche , Clemson University
Robert Geist , Clemson University
James Westall , Clemson University
In spite of the ever increasing prevalence of low-cost, color printing devices, gray-scale printing devices remain in widespread use. Authors producing documents with color images must account for the possibility that color images might be reduced to gray scale before they are viewed, and that the standard reduction used by gray scale printers--map color to luminance--might fail to preserve important image detail. This article suggests a new transformation for color to gray scale that preserves image detail by maintaining distance ratios during the reduction. An extension of the new transformation that reduces 3D color space to a 2D surface is also suggested. Such reductions are important for color-deficient observers.
color-deficient vision, color mapping, conjugate-gradient optimization, gray-scale transform

K. Rasche, J. Westall and R. Geist, "Detail Preserving Reproduction of Color Images for Monochromats and Dichromats," in IEEE Computer Graphics and Applications, vol. 25, no. , pp. 22-30, 2005.
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