保留灰度级的PCB图像增强研究  

Study of PCB image enhancement based on reserving gray level

作　　者：乔闹生[1,2] 赵华君[3] 

机构地区：[1]湖南文理学院物理与电子科学学院,湖南常德415000 [2]电子科技大学光电信息学院,成都610054 [3]重庆文理学院物理与信息工程系,重庆永川402168

出　　处：《计算机工程与应用》2009年第9期180-181,185,共3页Computer Engineering and Applications

基　　金：湖南省"十一五"重点建设学科项目;湖南文理学院重点科研项目(No.JJZD0702)~~

摘　　要：从理论上分析了直方图均衡化过程中灰度级合并的原因,给出了简单的物理解释和解析推导,并讨论了该算法的缺点;为了使图像保留更多的细节信息、消除虚假轮廓、保持连续性、提高对比度,提出了保留灰度级的直方图均衡化算法,并分析了其基本原理;对CCD与显微境获取的PCB图像进行了实验,结果表明:通过该算法处理的图像比采用传统直方图均衡化算法处理的图像的效果好。The cause of amalgamation of gray level during the histogram equalization is analyzed through theory,the simple physical explain and analytical deduction are given,and the shortcoming of the algorithm is discussed;The algorithm of histogram equalization based on reserving gray level is brought up in order to reserve more detail information,eliminate the false outline, maintain the continuity and increase contrast of the image after processing, and the basic principle is analyzed ;Through the result for experiment of PCB image that obtained by CCD and microscope verifies that the image after processing by the algorithm in this paper is better than that of the algorithm used by the histogram equalization.

关 键 词：图像增强 直方图均衡化 灰度级 印刷电路板图像 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]