作者：徐炜君1, 刘国忠2
作者单位：1. 大庆石油学院应用技术学院, 河北秦皇岛 066004;
2. 北京信息科技大学, 北京 100192
关键词：数字图像处理; 图像增强; 直方图均衡; 高频加强滤波; MATLAB软件
摘要：
图像增强是数字图像的预处理,对图像整体或局部特征能有效地改善。为了实现对数字图像的增强处理,采用时域直方图均衡和频域高频加强滤波相结合的方法对图像进行了增强处理。利用图像中变化剧烈的信息只与高频成分有关这一原理,结合MATLAB设计实现了高频加强滤波器并对图像进行了增强处理,在此基础上使用时域直方图均衡技术再对图像进行处理。试验结果表明,两种技术的结合可以使图像的细部特征更加明显,图像更加锐化,其图像增强效果要好于单独采用其中任意一种技术的处理结果。
Space domain and frequency domain combination of image enhancement technology and its realization
XU Wei-jun1, LIU Guo-zhong2
1. Applied Technology College of Daqing Petroleum Institute, Qinhuangdao 066004, China;
2. Beijing Information Science & Technology University, Beijing 100192, China
Abstract: Image enhancement is digital image's pretreatment, it can effectively improve the image's entirely or part characters.For achieving the purpose of digital image enhancement, adopting the combination technologies of histogram equalization and high-frequency reinforcement filter to process the image.Making use of the principle which the acutely changed information relates to the high frequency component and integrating with the MATLAB technology, designing and realizing the high-frequency reinforcement filter and using it to process the image.Then base on that technology, as well as using the histogram equalization technology to process the image, the examination result indicates that the two kinds of technologies' union can make the image detail characteristic especially obvious and the sharp of the image especially clear, the effect of image enhancement is better than any using one of the two technologies.
Keywords: Digital image processing; Image enhancement; Histogram equalization; High-frequency reinforcement filter; MATLAB
2009, 35(4): 52-54 收稿日期: 2009-3-2;收到修改稿日期: 2009-5-23
基金项目:
作者简介: 徐炜君(1981-),男,陕西富平人,助教,硕士,专业方向为PCB检测、软件设计。
参考文献
[1] Rafael C,Richard E. Woods digita image processing[M].Second Edition. Beijing:Publishing House of Electronics Industry,2002.
[2] 徐 飞,施晓红.MATLAB应用图像处理[M]. 西安:西安电子科技大学出版社,2002.
[3] 闫敬文.数字图像处理(MATLAB版)[M].北京:国防工业出版社,2007.
[4] 朱志刚,译.数字图像处理[M].北京:电子工业出版社.
[5] 王宏民,朱莹莹,付 源.空域法进行图像增强处理在MATLAB中的仿真与分析[J].煤矿机械,2005(5):56-58.
[6] 李 军.一种改进的数字图像模糊增强算法[J].电子测量技术,2006(5):57-60.
[7] 黄存胜,韩秀玲.VC++与MATLAB在图像增强中的应用与比较[J].计算机与信息技术,2008(6):.
[8] 阮秋琦.数字图像处理学[M].北京:电子工业出版社, 2001:30-55.
[9] 李耀辉,刘保军.基于直方图均衡的图像增强[J].华北科技学院学报,2003,5(2):65-66.
[10] 王耀南,李树涛,毛建旭.计算机图像处理与识别技术[M].北京:高等教育出版社,2001.
