Pei Soo-Chang, Chiu Yi-Mei
IEEE Trans Image Process. 2006 Oct;15(10):3230-4. doi: 10.1109/tip.2006.877478.
This work presents a color enhancement scheme to virtually restore ancient Chinese paintings in electronic form. Two degradations result in color contrast loss in ancient Chinese paintings: paper aging and pigment fading. The proposed enhancement scheme comprises two subsequent methods: background adjustment and saturation enhancement. The former method, based on the Von Kries color conversion in the CIE xyY color space, retrieves the original color of the paint paper by modifying colors based on their similarity to the background color. The proposed saturation enhancement method makes colors more vivid and bright, and also improves the image contrast.
这项工作提出了一种色彩增强方案，以虚拟方式还原电子形式的中国古代绘画。两种退化情况导致中国古代绘画色彩对比度丧失：纸张老化和颜料褪色。所提出的增强方案包括两个后续方法：背景调整和饱和度增强。前一种方法基于CIE xyY颜色空间中的冯·克里司颜色转换，通过根据颜色与背景颜色的相似度修改颜色来恢复画纸的原始颜色。所提出的饱和度增强方法使颜色更加鲜艳明亮，同时还提高了图像对比度。
