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Extraction of Image Gamut Surface and Calculation of its Volume

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Abstract:

Communicating color gamut is very important in color research and application. In this paper, we propose a new method for calculating the gamut volume by rearranging the color values. The entire color space is firstly divided by hue angle _Hab and secondly by lightness angle _Langle where the steps (_Hab, _Langle) are decided in nonuniform to include the constant color samples in each segmented sector. The most out-side points from the center are extracted, and the gamut surface is constructed by each ordered points. While, triangles constructed by each ordered points are decided to be outward or inward. The inward side is assigned to a minus volume, and finally the entire gamut volume is calculated by summing up the individual volume of tetrahedron with selected color values. The proposed method enables to describe the three dimensional gamut surfaces of color devices and color images.

Document Type: Research Article

Publication date: January 1, 2000

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