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首页> 外文会议>2016 International Conference on Biometrics >Post-mortem human iris recognition
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Post-mortem human iris recognition

机译：验后人类虹膜识别

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This paper presents a unique analysis of post-mortem human iris recognition. Post-mortem human iris images were collected at the university mortuary in three sessions separated by approximately 11 hours, with the first session organized from 5 to 7 hours after demise. Analysis performed for four independent iris recognition methods shows that the common claim of the iris being useless for biometric identification soon after death is not entirely true. Since the pupil has a constant and neutral dilation after death (the so called “cadaveric position”), this makes the iris pattern perfectly visible from the standpoint of dilation. We found that more than 90% of irises are still correctly recognized when captured a few hours after death, and that serious iris deterioration begins approximately 22 hours later, since the recognition rate drops to a range of 13.3-73.3% (depending on the method used) when the cornea starts to be cloudy. There were only two failures to enroll (out of 104 images) observed for only a single method (out of four employed in this study). These findings show that the dynamics of post-mortem changes to the iris that are important for biometric identification are much more moderate than previously believed. To the best of our knowledge, this paper presents the first experimental study of how iris recognition works after death, and we hope that these preliminary findings will stimulate further research in this area.
机译：本文提供了对人体虹膜识别后验尸的独特分析。在大学太平间分三场收集尸检后的人眼虹膜图像，相隔约11个小时，其中第一部分在死亡后的5到7个小时内组织。对四种独立的虹膜识别方法进行的分析表明，死亡后不久虹膜无法用于生物识别的普遍说法并不完全正确。由于瞳孔在死亡后具有恒定且中性的扩张（所谓的“尸体位置”），因此从扩张的角度来看，虹膜图案完美可见。我们发现，死亡后数小时捕获的虹膜仍能正确识别超过90％的虹膜，并且大约22小时后虹膜开始严重恶化，因为识别率下降到13.3-73.3％（取决于方法）当角膜开始混浊时使用。仅一种方法（本研究中使用的四种方法）仅观察到两次注册失败（104张图像）。这些发现表明，对生物特征识别很重要的虹膜事后变化动力学比以前认为的要温和得多。据我们所知，本文提出了关于虹膜识别死后如何工作的第一项实验研究，我们希望这些初步发现将刺激这一领域的进一步研究。

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