光学相干层析技术在法庭科学中的新应用

doi:10.7517/issn.1674-0475.181201

影像科学与光化学 ›› 2019, Vol. 37 ›› Issue (1): 1-6.DOI: 10.7517/issn.1674-0475.181201

光学相干层析技术在法庭科学中的新应用

张宁^1,2, 钟依志³, 李志刚¹, 郭晶晶¹, 许磊¹, 谢兰迟¹, 晏于文¹, 侯欣雨¹, 黄威¹, 黎智辉¹, 许小京¹, 谢彬²

1. 公安部物证鉴定中心现场物证溯源技术国家工程实验室, 北京 100038;
2. 江西省兴国县公安局, 江西赣州 342400;
3. 江西省赣州市公安局, 江西赣州 341000

收稿日期:2018-12-04 修回日期:2018-12-10 出版日期:2019-01-15 发布日期:2019-01-15
通讯作者: 李志刚
基金资助:
国家自然科学基金（61505034）、江西省经济犯罪侦查与防控技术协同创新中心开放课题（JXJZXTCX-020）和中央级公益性科研院所基本科研业务费项目（2018JB031）资助

The Novel Application of Optical Coherence Tomography in Forensic Investigation

ZHANG Ning^1,2, ZHONG Yizhi³, LI Zhigang¹, GUO Jingjing¹, XU Lei¹, XIE Lanchi¹, YAN Yuwen¹, HOU Xinyu¹, HUANG Wei¹, LI Zhihui¹, XU Xiaojing¹, XIE Bin²

1. National Engineering Laboratory for Forensic Science, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, P. R. China;
2. Xingguo County Public Security Bureau, Ganzhou 342400, Jiangxi, P. R. China;
3. Ganzhou City Public Security Bureau, Ganzhou 341000, Jiangxi, P. R. China

Received:2018-12-04 Revised:2018-12-10 Online:2019-01-15 Published:2019-01-15

摘要/Abstract

摘要： 光学影像技术是法庭科学物证检验分析的重要技术手段，具有无损、原位、快速等优势。近年来，随着光学影像技术的不断发展，一些新技术、新方法不断被引入法庭科学领域并付诸应用。光学相干层析技术（简称OCT技术）是一种光学断层成像技术，具有无损、高分辨、快速、断层成像的特点，特别是其可以无损地得到材料或生物组织内部的结构信息，突破了传统二维成像只能进行物质表面分析的局限，因此可成为一种很有前景的新型法庭科学光学影像技术。本文首先介绍了自主搭建的一套三维OCT成像系统，并着重介绍了基于该系统应用于法庭科学油漆物证检验、胶带指纹显现和毛囊特征分析等方面的研究。结果表明，OCT技术非常适合用于法庭科学物证检验分析，作为其他检验的先导技术手段，获取样品内部信息，提取新型光学特征参数。由于其采用光纤化技术，还有望实现便携化、小型化，在现场勘查中开展相关应用。

关键词: 光学相干层析技术, 法庭科学, 油漆检验, 指纹显现, 毛囊成像

Abstract: Optical imaging technology is important for the detection and examination of physical evidence, and has the advantages of non-destructive, in situ and rapid analysis. In recent years, with the continuous development of optical imaging technology, some new techniques and methods have been introduced into the forensic science and put into application. Optical coherence tomography (OCT) is new in forensics and performs high-resolution, cross-sectional tomographic imaging of the internal microstructure in materials and tissues, and without any damages to the evidence. This paper first introduces a custom-built three-dimensional OCT imaging system, and then presents three novel applications by utilizing this system, including car paint analysis, latent fingerprint visualizing and hair follicle analysis. These results show that OCT technology is very suitable for physical evidence examination because of its characteristics of non-destructive high-resolution subsurface imaging. As a novel technology for forensic investigation, OCT imaging obtains internal structural information and new optical features of samples and extracts. In the future, it is expected to be portable and miniaturized and be applied in crime scene investigation.

Key words: optical coherence tomography, forensic science, paint examination, latent fingerprint development, hair follicles imaging

张宁, 钟依志, 李志刚, 郭晶晶, 许磊, 谢兰迟, 晏于文, 侯欣雨, 黄威, 黎智辉, 许小京, 谢彬. 光学相干层析技术在法庭科学中的新应用[J]. 影像科学与光化学, 2019, 37(1): 1-6.

ZHANG Ning, ZHONG Yizhi, LI Zhigang, GUO Jingjing, XU Lei, XIE Lanchi, YAN Yuwen, HOU Xinyu, HUANG Wei, LI Zhihui, XU Xiaojing, XIE Bin. The Novel Application of Optical Coherence Tomography in Forensic Investigation[J]. Imaging Science and Photochemistry, 2019, 37(1): 1-6.

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光学相干层析技术在法庭科学中的新应用

The Novel Application of Optical Coherence Tomography in Forensic Investigation

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