3D-3D牙叠加用于个人识别:对中国东部人口的研究
De-Min Huo1, Xiao-Yan Mao2, Wei-Wei Mo3
1Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai 200063, China; Institute of Criminal Science and Technology, Jiading Branch of Shanghai Public Security Bureau, Shanghai 201822, China.
Forensic science international
|August 3, 2023
概括
3D口腔内扫描 (IOS) 能够在中国东部人口中准确识别个体. 0.45毫米的平方根平均值 (RMS) 门有效地区分了匹配和不匹配,实现了100%的准确性.
科学领域:
- 法医牙科 法医牙科
- 生物识别信息 生物识别信息
- 数字成像技术的数字成像.
背景情况:
- 3D口腔内扫描 (IOS) 技术正在迅速发展,并在牙科实践中得到广泛应用.
- IOS数据为新型识别程序提供了有价值的个人信息,特别是通过3D-3D牙叠加.
研究的目的:
- 评估3D-3D牙叠加用于东中国人口的个人识别的适用性.
- 使用这种方法建立一个可靠的准确个人识别值.
主要方法:
- 收集了40名志愿者最初和一年后的3D口腔内扫描 (IOS),以及60名患者的120个扫描.
- 使用Geomagic Control X软件进行3D模型修剪,对齐和叠加.
- 计算了点对点距离的平方中根 (RMS) 值,以区分匹配 (相同的个体) 和不匹配 (不同的个体).
主要成果:
- 在使用0.45毫米的RMS值的盲目测试中实现了100%准确的识别.
- 发现RMS值为匹配的0.05-0.18毫米,不匹配的0.72-2.28毫米,没有重叠.
- 观察者内部和观察者间的重复性误差 (相对技术测量误差 - - rTEM) 低于4.7%.
结论:
- 3D-3D牙叠加是一种有效的方法,用于个人识别在中国东部的人口.
- 一个RMS值<0.45毫米表明成功的个人识别的可能性很高.
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