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数字图像处理仿真

题目

基于MATLAB的直方图均衡化处理仿真

院（系）名称 专 学 学 指

信院通信系 通信工程

段应春

业生生导

名姓学教

称 名 号 师

090110042 刘润杰

2012年6月1日

目 录

1，引言 ...................................................................................................4 2，直方图均衡化原理 .........................................................................5 3、直方图的均衡化 .............................................................................6 4，直方图均衡化的算法步骤 .............................................................7 5，实验结果 .........................................................................................7 6，结束语 .............................................................................................9 7、参考文献 .........................................................................................9 附录：实验源程序 .............................................................................9

摘要

直方图均衡化是图像处理领域中利用图像直方图对对比度进行调整的方法,这种方法通常用来增加许多图像的局部对比度，尤其是当图像的有用数据的对比度相当接近的时候。通过这种方法，亮度可以更好地在直方图上分布。这样就可以用于增强局部的对比度而不影响整体的对比度，直方图均衡化通过有效地扩展常用的亮度来实现这种功能。本文分析和总结了灰度直方图的均衡化算法并通过MATLAB实验验证了该方法能有效达到图像增强的目的。

关键词:直方图；均衡化；图像增强

abstract

Histogram equalization is in the field of image processing based on

image histogram adjustment to contrast method, this method is generally used to add many image local contrast, especially when the image of useful data fairly close to the contrast of the time. Through this method, the brightness of can better in the distribution histogram. This can be used to increase local contrast and do not affect overall contrast, histogram equalization through effectively expand the brightness of the commonly used to implement this function. This paper analyzes and summarizes the of gray histogram equalization through MATLAB algorithm, and the experimental results demonstrate that the proposed method can effectively achieve the purpose of image enhancement.

Keywords: histogram; Equalization; Image enhancement