法医学杂志 ›› 2023, Vol. 39 ›› Issue (1): 40-44.DOI: 10.12116/j.issn.1004-5619.2020.500309

• 技术与应用 • 上一篇    下一篇

人体液斑迹与非生物斑迹鉴别的三维荧光光谱分析

畅晶晶1(), 周辉2, 张瑾1, 徐小玉1, 王枫2, 熊胜军2, 张广峰1, 杨雪莹1, 刘开会1   

  1. 1.公安部鉴定中心 法医遗传学公安部重点实验室,北京 100038
    2.北京华泰诺安探测技术有限公司,北京 101312
  • 收稿日期:2020-03-27 发布日期:2023-02-25 出版日期:2023-02-28
  • 作者简介:畅晶晶(1981—),女,硕士,副主任法医师,主要从事现场勘验、物证检验及法医物证学研究;E-mail:janychangcsi@163.com
  • 基金资助:
    中央级公益性科研院所基本科研业务费专项资助项目(2018JB011);公安部“双十计划”重点攻关资助项目(2019SSGG0603);国家重点研发计划资助项目(2018YFC1200203)

Identification of Human Body Fluid Stains and Non-Biological Stains by Three-Dimensional Fluorescence Spectroscopy

Jing-jing CHANG1(), Hui ZHOU2, Jin ZHANG1, Xiao-yu XU1, Feng WANG2, Sheng-jun XIONG2, Guang-feng ZHANG1, Xue-ying YANG1, Kai-hui LIU1   

  1. 1.MPS’ Key Laboratory for Forensic Genetics,Institute of Forensic Science,Ministry of Public Security,Beijing 100038,China
    2.HT -Nova Co. Ltd. ,Beijing 101312,China
  • Received:2020-03-27 Online:2023-02-25 Published:2023-02-28

摘要:

目的 利用三维荧光光谱分析技术,建立一种人体液斑迹与非生物斑迹的快速无损鉴别方法。 方法 通过对采集的人唾液、3%的血液、咖啡、芬达斑迹的三维荧光光谱数据进行降维处理,经过小波变换、光谱去噪、特征提取后建立分类公式,使用Fisher判别法进行光谱匹配识别,建立区别斑迹类型的分析方法。 结果 根据数据训练和比对结果,芬达、咖啡、唾液和血液均能达到91.39%以上的识别准确率,其中唾液达到了100%的识别准确率。 结论 三维荧光光谱分析是一种有潜力可实现快速无损鉴别生物斑迹与非生物斑迹的方法。

关键词: 法医学, 三维荧光光谱, 唾液, 血液, 非生物斑迹, 体液斑迹鉴定

Abstract:

Objective To establish a rapid and nondestructive identification method for human body fluid stains and non-biological stains using three-dimensional fluorescence spectroscopy. Methods The collected three-dimensional fluorescence spectrum data of human saliva, 3% blood, coffee and Fanta? stains were processed with dimensionality reduction. After wavelet transform, spectral denoising and feature extraction, the classification formula was established. The Fisher discriminant was used for spectrum matching and recognition to establish the analysis method to distinguish stain types. Results According to the results of data training and comparison, all the recognition accuracies of Fanta?, coffee, saliva and blood were more than 91.39%. Among them, saliva reached 100% recognition accuracy. Conclusion Three-dimensional fluorescence spectroscopy is a potential method for rapid and nondestructive identification of biological and non-biological stains.

Key words: forensic medicine, three-dimensional fluorescence spectroscopy, saliva, blood, non-biological stains, identification of body fluid stains

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