图像光照补偿方法的研究  

Study on illumination compensation method for images

作　　者：刘培[1] 王建英[1] 尹忠科[1] 

机构地区：[1]西南交通大学信息科学与技术学院,四川成都610031

出　　处：《系统工程与电子技术》2008年第7期1343-1346,共4页Systems Engineering and Electronics

基　　金：国家自然科学基金(60772084);四川省新产品计划项目(2006x15-038)资助课题

摘　　要：为了有效弱化光照对图像内容的影响,对现有的Gamma矫正方法进行了分析。并在计算复杂度不变的情况下,对原来的非线性函数进行了改进,构造了更合理的Gamma矫正曲线,使Gamma矫正方法的性能得到提高。针对彩色图像中的光照补偿问题,比较了基于不同彩色模型的处理方法。实验结果表明,本方法在弱化光照影响、提高图像质量方面具有良好的性能。Illumination always plays an important role in impairing image quality in practice. Through the study of the current illumination compensation methods, an improved Gamma correction method is proposed to weaken illumination effect on image quality. Through the improvement in non-linear functions, the performance of the improved Gamma correction method is enhanced without more computation complexity. Different illumination compensation methods for color images are compared. Experimental results demonstrate that the proposed method performs better in weakening illumination effect and improving image quality.

关 键 词：图像增强 光照补偿 Gamma矫正 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]