基于特殊角点和基点定位在线掌纹的方法  

On-line palmprint Location method based on special corner point & basic point

作　　者：黄海涛[1] 戴青云[1] 卞丽雅[1] 马章雄[1] 

机构地区：[1]广东工业大学信息学院

出　　处：《微计算机信息》2007年第25期272-274,共3页Control & Automation

基　　金：省级资助粤港关键领域重点突破项目(编号:2004A11501002)

摘　　要：本文简述了目前在线掌纹定位的主要方法,提出一种通过寻找特殊角点和基点实现在线掌纹的定位。该方法基于掌纹的形状特点,先定位特殊角点,再通过统计块点方向和求梯度确定感兴趣的纹线上的一点,最后用灰度值跟踪方法确定特殊基点。该定位方法减少了手掌张开强度因素造成的影响,并取得了理想的实验结果。By comparing the existing location methods of on-line palmprint location, this paper puts forward a method for locating the palmprint based on special corner point and basic point. At first, this method locates the special corner point based on the feature of the palmprint, then searches one point in the target texture line after calculating point orientation and grads of blocks, finally locates the special basic point by using grey-track method. This method can greatly reduce the impact caused by different open angel of the palm and the experiment result turns out to be successful.

关 键 词：在线掌纹 角点 基点 点方向图 灰度跟踪 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]