浅谈图像增强的直方图处理及其MATLAB实现  

On Histograms Processing of Image Enhancement and Its Realization with MATLAB

作　　者：王洪兰 张若钢 

机构地区：[1]湖南兵器工业职工大学,湖南,湘潭,411207 湖南兵器工业职工大学,湖南,湘潭,411207

出　　处：《电脑知识与技术（过刊）》2007年第16期1106-1107,1116,共3页Computer Knowledge and Technology

摘　　要：图像增强是图像处理的一个重要分支,它对图像整体或局部特征能有效地改善;直方图是图像处理中最重要的基本概念之一,它能有效地用于图像增强.本文主要讨论了直方图均衡化和规定化处理的图像增强技术,并给出了相关的推导公式和算法;同时用MATLAB语言加以实现,给出标准的数字图像在各种处理前与处理后的对照图像、具体算法、实验结果及直方图.结果表明,用直方图均衡化和规定化的算法,能将原始图像密集的灰度分布变得比较稀疏,使处理后的图像视觉效果得以改善,提高其对比度.Image Enhancement is an important branch of image processing,it can improve availably whole or partial characters of image;Histogram is the most important one of the basic concept for image processing,it can effectively be used for image enhancement.This article mainly introduces two kinds of algorithm-histogram equalization and histogram specifications,gives relative logic formula and methodology;In addition to the use MATLAB to be realized,given the standard digital images in various pre-processing and post-processing images contrast,the specific algorithm,the experimental results and histogram.The result shows: histogram equalization and specifications can improve the contrast and effect.With algorithm of histogram equalization and specifications,intensive gray distribution of the original image has become more sparse,so the image processing visual effects and its contrast can be improved.

关 键 词：数字图像处理 图像增强 直方图 均衡化 规定化 MATLAB 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]