Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2000.11d
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- Pages.143-146
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- 2000
Lightness and Chroma Mapping Consider the Device Characteristic
장치 특성을 고려한 밝기 사상 및 색역 사상
Abstract
In this paper, luminance mapping for uniform color distribution and gamut mapping for maximum chroma reproduction are proposed. In the conventional lightness mapping, the average lightness difference between the two gamut is increased and different color changes in bright and dark regions are also increased. To solve these problems, a lightness mapping is proposed that minimizes the lightness difference of the cusps at each hue angle and produces same color changes in bright and dark regions. Also, chroma mapping that utilize variable anchor point and an anchor point are proposed for maximum chroma reproduction and uniform color change. The proposed algorithm reduce a sudden color change on the gamut boundary of the printer and to maintain a uniform color change during the mapping process. Accordingly, the proposed algorithm can reproduce high quality images with low-cost color devices.
Keywords