%0 Journal Article
%T A Grid-Interpolation Model for Orientation Field Estimation in Fingerprint Images<br>一种用于指纹方向场估计的网格插值模型
%A WANG Hongf
%A WANG Shuguange
%A FAN Linlin
%A GUO Tiande
%A <br>王红法
%A 王曙光
%A 樊玲玲
%A 郭田德
%J 中国图象图形学报
%D 2009
%I 
%X Orientation field estimation is an essential preprocessing step and it is crucial for the efficiency of the fingerprint recognition algorithm. In this paper, we propose a Grid-Interpolation Model. It partitions the fingerprint plane around singular points with discrete grids, and builds the nonlinear relationship between orientation field and singular points. The orientation of grid points is adjusted by global information of the fingerprint, which is much different from the conventional method. Two experiments are carried out on FVC2002 and FVC2004 databases and the results indicate that the proposed model can reduce noise more efficiently and has more robust performance than the conventional method. Especially as for fingerprints with bad quality, it also can give satisfactory estimation.
%K fingerprint recognition
%K orientation field
%K fingerprint analysis
%K singular points
%K fingerprint model<br>指纹识别
%K 方向场
%K 指纹分析
%K 奇异点
%K 指纹模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=9AE58332828FE127D6517E4C62B9FD34&yid=DE12191FBD62783C&vid=F3583C8E78166B9E&iid=38B194292C032A66&sid=B941678158018439&eid=9BA67A0B76A3DBA8&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=24