摘要
本文提出了一种基于指纹方向图和直方图均衡的新方法——块方向增强法。它将图像增强中最简单的直方图均衡法和指纹图像的方向图结合起来 ,在合适的图像块内进行方向增强 ,能够快速、有效地去除指纹采集中边被破坏引入的噪音。仿真结果表明 ,该方法对断点和叉连噪音都有很好的去除作用 ,减少了假特征点的产生 。
In this paper, a new method in pre processing of fingerprint recognition is proposed,which is named block direction enhancement, it combine image enhancement and direction image together and pre process the image in blocks of suit sizes.Computer simulation has shown that this method can reduce the false feature numbers and improve the speed and accuracy in more degree.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2001年第z2期231-232,共2页
Chinese Journal of Scientific Instrument
关键词
模式识别
指纹图像
块方向增强
Pattern recognition Fingerprint image Block direction enhancement
