Color display for dichromats

Francoise Vienot; Hans Brettel

doi:10.1117/12.410790

21 December 2000 Color display for dichromats

Francoise Vienot, Hans Brettel

Proceedings Volume 4300, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts VI; (2000) https://doi.org/10.1117/12.410790
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

We have proposed colormaps to replace a widely used 216 colors palette in order to allow a designer with normal color vision to simulate the colors seen by dichromats. As dichromats lack one class of cone photo pigment, they confuse colors that differ only in the excitation of the missing class of photo pigment. The method is based on the LMS colorimetric system, which specifies colors in terms of the relative excitations of the cones. We have constructed a rule to reduce any set of confused colors to a single three- component specification. We have introduced a modification, assuming that the video display primaries and nominal white are representative of recent standards for Cathode Ray Tube monitors and that its video-transfer function is a power function with an exponent of 2.2. For everyday practice, replacing a normal palette by a reduced palette provides an immediate warning of possible losses of readability of a display by color-deficients.

Citation Download Citation

Francoise Vienot and Hans Brettel "Color display for dichromats", Proc. SPIE 4300, Color Imaging: Device-Independent Color, Color Hardcopy, and Graphic Arts VI, (21 December 2000); https://doi.org/10.1117/12.410790

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