常用指纹细节特征标注方法的比较研究

Comparison among the Common Approaches to Label Fingerprint Specific Features

目的为了有效提高PU-AFIS的匹配效率,对常用的指纹细节特征标注方法进行比较研究,找出指纹细节特征的最佳标注方法。方法通过比较实验,探究GA 774.5—2008《指纹特征规范(第5部分):指纹细节特征点标注方法》中的标注方法、指纹工作者在长期实践过程中的习惯标注方法以及模拟指纹自动识别系统自动提取的标注方法对查询比对结果的影响。结果三种标注方法都能够有效匹配使对应捺印指纹出现在候选队列,但是根据模拟系统自动提取的标注方式标注细节特征的现场指纹与对应捺印指纹匹配效果最好、得分最高。结论模拟系统自动提取的标注方法为最佳标注方法,建议选择系统自动提取的标注方法为人工标注的标准。

Objective To find out the best way for labeling the particulars of fingerprint through effectively improving the matching efficiency of automatic fingerprint identification system(AFIS)by comparison and analysis of three kinds of methods on labeling fingerprint specific features.Methods Labeling the fingerprint particulars is commonly built on three approaches:1.fingerprint feature specification(Part 5)stipulated in the Public Security Behavior Standards of the People’s Republic of China;2.the accustomed way that the fingerprint examiners have established in long practice and use routinely;3.the annotation that AFIS system simulates to automatically extract the specific features.By comparative experiments,an inquiry was conducted about the influence of the three labeling choices on query performance.Results Three methods of labeling fingerprint particulars can all produce effective matches to make the corresponding fingerprints appear in the candidate queue.Yet the way that AFIS system adopts is the best,achieving the highest score.Conclusions The annotation that AFIS system automatically extracts specifics is the best way for labeling fingerprint particulars,worth recommending to be selected as the standard for artificial labeling.