使用Evofinder®系统对注册弹道数据库进行性能评估。
Performance Evaluation of a Registered Ballistic Database Using the Evofinder® System.
作者信息
Li Yuesong, Lin Sheng, Luo Yaping, Mi Zhongliang
机构信息
School of Forensic Science, People's Public Security University of China, Beijing, 100038, China.
Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science, Shanghai Public Security Bureau, Shanghai, 200083, China.
出版信息
J Forensic Sci. 2019 Sep;64(5):1335-1344. doi: 10.1111/1556-4029.14054. Epub 2019 Mar 22.
Firearms for police in China are registered along with their fired bullets and cartridge cases. A Registered Ballistic Database (RBD) of 1000 Norinco QSZ-92 pistols with registered ammunition was established and was evaluated through the Evofinder® system. In this research, 1000 bullets and 1000 cartridge cases were randomly selected and correlated against an RBD of 2996 bullets and 2999 cartridge cases. Examiners found that successful identifications all ranked 1st, supported with land (100%), groove (97%) engraved areas, and primary marks (85.6%) for bullets, and firing pin impressions (99.8%), and breech face marks (99.9%) for cartridge cases. Two known matches (KM) for the same pistol rank in the top two (100%). The distribution of similarity scores varies from marks; however, the Evofinder® system could still effectively distinguish known matches from known nonmatches (KNM) for either bullets or cartridge cases. This study demonstrates the efficiency of the RBD.
中国警方的枪支与其发射的子弹及弹壳一同登记。建立了一个包含1000支配备已登记弹药的 Norinco QSZ - 92手枪的注册弹道数据库（RBD），并通过Evofinder®系统进行评估。在本研究中，随机选取了1000发子弹和1000个弹壳，并与一个包含2996发子弹和2999个弹壳的RBD进行比对。检验人员发现，成功识别均排名第一，子弹的膛线（100%）、凹槽（97%）刻划区域以及主要痕迹（85.6%），弹壳的击针痕迹（99.8%）和枪膛表面痕迹（99.9%）均提供了支持。同一支手枪的两个已知匹配（KM）位列前两名（100%）。相似性分数的分布因痕迹而异；然而，Evofinder®系统仍能有效地区分子弹或弹壳的已知匹配与已知不匹配（KNM）。本研究证明了RBD的有效性。
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