摘要
在光照补偿过程中,基于灰度映射关系的传统补偿方法存在着缺陷,导致补偿后的图像层次过渡不自然,缺乏立体感。本文利用图像光照分量变化缓慢的特点,从图像中分离出光照分量与反射分量,只对光照分量进行Gamma校正来实现光照补偿。实验结果表明该方法有较好的补偿效果。
For illumination compensation of images,the traditional method based on gray-level mapping is defective since the resultant images are unnatural in grey level transition and short of three-dimensional sense.This paper proposes to separate the image into the illumination and reflection components by image smoothing based on a knowledge that the illumination component usually changes slowly in the image;then a Gamma correction can be made only to the illumination component rather than the gray image as a whole.Experimental results show that the proposed method performs better in image compensation.
出处
《长春理工大学学报（自然科学版）》
2010年第2期137-139,124,共4页
Journal of Changchun University of Science and Technology(Natural Science Edition)
关键词
光照补偿
平滑滤波
GAMMA校正
illumination compensation
smoothing filtering
Gamma correction
