指纹自动识别系统多种算法互补能力研究

姚越武, 丁宏, 马继雄, 王刚, 罗昌英

刑事技术 ›› 2017, Vol. 42 ›› Issue (5) : 385-388. DOI: 10.16467/j.1008-3650.2017.05.010
论著

指纹自动识别系统多种算法互补能力研究

  • 姚越武1, 丁宏2, 马继雄1, 王刚3, 罗昌英3
作者信息 +

Complementation between Various Algorithms of AFIS and the Practical Value

  • YAO Yuewu1, DING Hong2, MA Jixiong1, WANG Gang3, LUO Changying3
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摘要

单一算法指纹自动识别系统在LT比对(即正查——现场比十指Latent to Ten-print)时均存在一定的漏比率(即错误拒绝率FRR),不同算法指纹自动识别系统错误拒绝的样本并不完全重合,即不同识别算法之间存在互补性。本文通过在一套指纹自动识别系统中同时加载多套不同来源算法进行比对,获得各套算法单独比对、融合比对的结果,再通过对这些比对结果的分析、比较,验证了不同识别算法具有互补性,使用多套异构识别算法进行比对,能够有效降低错误拒绝率,提高识别系统的比对精度这一结论。

Abstract

AFIS (automatic fingerprint identification system) plays an important role for a case-concerned fingerprint to match against one of the recorded fingerprints in it. The match depends on AFIS-adopted algorithm to determine whether there is identity between the compared fingerprint and one of those stored. It has been found that FRR (false rejection rate) always exists when only single one algorithm was employed by the AFIS to make comparison from one case-extracted latent fingerprint to someone’s ten fingerprints (Latent to Ten-print, LT) that is kept in the AFIS. Another discovery also showed that the wrongly rejected samples are not completely identical in different AFIS because of the adoption of various algorithms in the involved AFIS, suggestive of the complementation between various algorithms. Such a complementation should be utilized to assure the accuracy and validity of a match (the case identification). Therefore, this study tries to integrate multiple algorithms of fingerprint’s match into one AFIS, performing the same LT search through both various single algorithm and combinations of these algorithms. Consequently, the FRR is effectively reduced, resulting in LT search having its accuracy improved.

关键词

指纹自动识别系统 / 多算法 / 融合 / 精度提高

Key words

AFIS / latent search / multiple matching algorithm / fusion / accuracy improvement

引用本文

导出引用
姚越武, 丁宏, 马继雄, 王刚, 罗昌英. 指纹自动识别系统多种算法互补能力研究. 刑事技术. 2017, 42(5): 385-388 https://doi.org/10.16467/j.1008-3650.2017.05.010
YAO Yuewu, DING Hong, MA Jixiong, WANG Gang, LUO Changying. Complementation between Various Algorithms of AFIS and the Practical Value. Forensic Science and Technology. 2017, 42(5): 385-388 https://doi.org/10.16467/j.1008-3650.2017.05.010

参考文献

[1] 中华人民共和国公安部五局. 2013年上半年全国公安机关指纹协查工作情况通报[R]. 北京:中华人民共和国公安部五局,2013.
[2] 中华人民共和国公安部. GA773-2008 指纹自动识别系统术语[S]. 北京:中国标准出版社,2008.
[3] 中华人民共和国公安部. GA426.1-2008 指纹数据交换格式 第1部分:指纹数据交换文件格式规范[S]. 北京:中国标准出版社,2008.

基金

浙江省重点研发计划项目(No.2017C03026)

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