## 基于Retinex理论的图像增强算法研究

Title    Image enhancement algorithm research  based on Retinex theory
Abstract
Image enhancement is a fundamental processing technology in the field of image processing,it plays an important role in the daily life and production. Traditional image enhancement algorithms for color image processing, there is often a color distortion, but Retinex algorithm theory is based on color constancy, you can get very good color image processing effects,it has been widely used in the fields of remote sensing image processing and the like. Retinex theory’s essence is putting aside the effect of irradiation light to get reflection properties of the object from the original image to obtain the object original appearance. This article introduces the basic theory of image enhancement, analysis of the basic Retinex theory and discusses single-scale Retinex algorithm, multiscale Retinex algorithm, McCann99 multilevel Retinex algorithm and Frankle-McCann Retinex algorithm ,then deals with the actual color images ,when we enhance the image details, we also get rich colors , analyze and compare the treatment effects of various algorithms at the time.

Keywords  Retinex theory,image enhancement, color constancy

1  绪论 1
1.1  研究背景 1
1.2  研究现状 1
1.3  本文内容及章节安排2
2  图像增强 3
2.1  空间域图像增强技术 3
2.2  频率域图像增强技术 10
3  基于Retinex理论图像增强算法研究 14
3.1  色彩恒常性14
3.2  Land的Retinex理论14
3.3  Retinex图像增强算法简介16
3.4  单尺度Retinex算法17
3.5  多尺度Retinex算法19
3.6  带色彩恢复的多尺度Retinex算法20
3.7  McCann’s Retinex算法22

1  绪论
1.1  研究背景

Retinex理论基于颜色恒常性，此理论的目的是将一张给予的图像S进行分解，得到代表照射分量和反射分量的两张不同图像。Retinex理论的本质是除去照射光源对观察原始图像的干扰，得到物体的有关反射性质，也就是得到物体原本面貌[1]。该算法的特点有能够保持颜色的恒常性、可以进行动态范围压缩、锐化和色调再现处理等等。近些年来，Retinex理论在有关数字图像的处理领域被使用的频率也变得越来越高。 基于Retinex理论的图像增强算法研究:http://www.lwfree.cn/tongxin/20180705/18893.html
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