刑事技术2025，Vol.50Issue(5)：449-456,8.DOI:10.16467/j.1008-3650.2024.0058
箕型纹中心和箕口区域相似异源指纹出现规律研究
Research on the Occurrence Patterns of Close Non-matches on Central and Branch Regions of Loop
摘要
Abstract
The presence of close non-matches poses inherent risks to fingerprint identification,and exploring their occurrence patterns in different regions of the fingerprint can enhance the risk awareness of identification personnel.To investigate this,30 fingerprints from the central and branch regions of loops were selected as research subjects.Each fingerprint was queried 15 times within a database of ten million individuals to examine the occurrence of homologous fingerprints and close non-matches when 6 to 20 minutiae were marked.The results revealed that close non-matches could be found in both the central and branch regions of loops when 6 to 20 minutiae were marked,and notably,the number of close non-matches in the branch region was significantly higher than in the central region.The proportion of homologous fingerprints ranked higher than close non-matches in the central and branch regions of loops,with respective percentages of 98.4％and 60.9％.Even when 20 minutiae were marked,there were still instances where homologous fingerprints did not appear in the branch region of the loop.Frequency analysis of similar regions indicated that the side of the central region facing the loop and the side of the branch region facing the branch were more susceptible to having close non-matches.Additionally,high-level close non-matches with over 10 matching points were identified in both the central and branch regions of loops.Therefore,fingerprint identification personnel must handle close non-matches with caution to prevent them from interfering with accurate identification.关键词
指纹鉴定/相似异源指纹/箕型纹/细节特征Key words
fingerprint identification/close non-matches/loop/minutiae分类
社会科学引用本文复制引用
葛帅杰,韩文强,陈世韬,罗亚平..箕型纹中心和箕口区域相似异源指纹出现规律研究[J].刑事技术,2025,50(5):449-456,8.基金项目
中国人民公安大学刑事科学技术"双一流"创新研究专项(2023SYL06) （2023SYL06）
