Optimal chromaticities of the primaries for wide gamut 3-channel display

17 January 2005 Optimal chromaticities of the primaries for wide gamut 3-channel display

Youngshin Kwak, Seong-Deok Lee, Wonhee Choe, Chang-Yeong Kim

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Proceedings Volume 5667, Color Imaging X: Processing, Hardcopy, and Applications; (2005) https://doi.org/10.1117/12.587338
Event: Electronic Imaging 2005, 2005, San Jose, California, United States

Abstract

The theoretical approach is introduced to design the optimal chromaticities for primaries of a display with a given size of triangular color gamut in xy-plane. Optimal primaries are defined as a set of chromaticities of red, green and blue primaries with fixed white point that most optimally satisfying four criteria, i.e. gamut size, gamut shape, coverage of object colors and hue of the primaries, in the visually uniform color space, CIECAM02. It is assumed that the optimal gamut should cover that of sRGB and have similar maximum chroma for each hue. The number of SOCS data located outside the gamut is used as a criterion to judge the coverage of object colors. Also it is set the hues of primaries to be close to those of sRGB. The simulation results showed that the optimal primaries for 85% of NTSC area have similar points with sRGB for red and blue, and green primary is located in between sRGB and NTSC. For 100% of NTSC area, the optimal chromaticities are located near those of NTSC for red and green and that of sRGB for blue.

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Youngshin Kwak, Seong-Deok Lee, Wonhee Choe, and Chang-Yeong Kim "Optimal chromaticities of the primaries for wide gamut 3-channel display", Proc. SPIE 5667, Color Imaging X: Processing, Hardcopy, and Applications, (17 January 2005); https://doi.org/10.1117/12.587338

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