基于直方图均衡化的手背静脉图像对比度增强

doi:10.3724/SP.J.1087.2013.01125

计算机应用 ›› 2013, Vol. 33 ›› Issue (04): 1125-1127.DOI: 10.3724/SP.J.1087.2013.01125

基于直方图均衡化的手背静脉图像对比度增强

蔡超峰,任景英

郑州轻工业学院电气信息工程学院，郑州450002

收稿日期:2012-11-01 修回日期:2012-11-21 出版日期:2013-04-01 发布日期:2013-04-23
通讯作者: 蔡超峰
作者简介:蔡超峰（1980-），男，河南许昌人，讲师，博士，主要研究方向：生物医学信号分析与处理；任景英（1980-），女，河南商丘人，讲师，硕士，主要研究方向：数字图像处理。
基金资助:
河南省科技计划项目（112102210189）

Contrast enhancement of hand vein images based on histogram equalization

CAI Chaofeng,REN Jingying

College of electric and information engineering, Zhengzhou University of Light Industry, Zhengzhou Henan 450002, China

Received:2012-11-01 Revised:2012-11-21 Online:2013-04-01 Published:2013-04-23
Contact: CAI Chaofeng

摘要/Abstract

摘要： 手背静脉图像对比度往往较低，这将影响整个手背静脉识别系统的识别准确率。首先提取手背静脉图像中的有效区域，然后利用直方图均衡化 (HE) 及其各种改进算法对提取的手背静脉图像进行对比度增强处理。实验结果表明，子块部分重叠局部直方图均衡化算法（POSHE）不但能够增强图像的整体对比度，而且图像中细节与背景之间的对比度也得到了增强，同时该算法效率较高，适合于手背静脉图像的对比度增强处理。

关键词: 手背静脉识别, 对比度增强, 有效区域提取, 直方图均衡化

Abstract: The hand vein image tends to be of low contrast, which affects the recognition accuracy of the whole hand vein recognition system. The effective area of the hand vein image was extracted firstly and then the Histogram Equalization (HE) algorithm and its improved versions were employed to enhance the contrast of the extracted hand vein image. The results indicate that the Partially Overlapped Sub-block Histogram Equalization (POSHE) can enhance not only the overall contrast but also the detailed one. Meanwhile, its high efficiency is suitable to the hand vein image contrast enhancement.

Key words: hand vein recognition, contrast enhancement, effective region extraction, histogram equalization

中图分类号:

TN911.73

蔡超峰任景英. 基于直方图均衡化的手背静脉图像对比度增强[J]. 计算机应用, 2013, 33(04): 1125-1127.

CAI Chaofeng REN Jingying. Contrast enhancement of hand vein images based on histogram equalization[J]. Journal of Computer Applications, 2013, 33(04): 1125-1127.

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基于直方图均衡化的手背静脉图像对比度增强

Contrast enhancement of hand vein images based on histogram equalization

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