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Picture Quality Improvement Systems(PQIS) have been developed for user`s needs with the development of display technology. Most PQIS change the all input data, so there were some color distortion. In order to compensate such problems, the PQIS using Skin Protection Algorithm(SPA) have been proposed. But the PQIS using SPA is performed simplex color emphasis, as a result occurred color saturation and decoloration. In this paper, we proposed the modified PQIS using SPA on CIE 1976 u`v` chromaticity coordinate. The modified method operated chromaticity extension and reduction at the same time about brightness value to prevent the saturation and decoloration. We evaluated by comparing the conventional method with the proposed method of RGB Gamut variation rate using 42 test image.

han-guk jeongbo tongsin hakoe nonmunji

Picture Quality Improvement System to prevent the Saturation and Decoloration using Skin Protection Algorithm(SPA) on CIE 1976 u'v' Chromaticity Coordinates