Abstract
To take full advantage of high brightness, wide color gamut and high saturation of the Laser TV, kinds of gamut expansion methods emerged. Most of the methods are based on the hue unchangeable principle. So before gamut expansion, the boundary of Laser TV gamut and that of current display standard gamut should be first obtained. But the traditional method for getting the device color gamut based on physical model was not accurate enough for the Laser TV gamut expansion. Based on this situation, An improved gamut boundary description method based on graham algorithm for laser TV was proposed in this paper. The method first used Convex Hull Algorithm to detect the edge points on the convex edge, and then through multiple iterations to calculate the Concave edge points between the convex edge points. Result of experiment on the CIE L*a*b* color space showed this kind of method could give a more accurate description of the Laser TV gamut boundary.
Published Version
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