摘要
采用高光谱技术结合化学计量法,对市面上常见的42种不同品牌、型号的黑色染料笔墨迹进行分类鉴别。首先,对42种黑色染料笔的墨迹样品进行450-950 nm区间的高光谱扫描;借助SPSS 26软件和Origin Pro 2023,采用系统聚类分析方法对墨迹样品进行分类,并用主成分分析来验证分类的结果。对高光谱数据进行系统聚类分析,能将42种墨迹样品分为两大类共7小类,其中油基笔4类,水基笔3类;经主成分分析验证其分类效果合理。结果表明,高光谱技术结合化学计量法能够对黑色染料笔墨迹进行分类和鉴别,为实际案件中黑色染料笔墨迹的检验提供了技术支撑。
The Hyperspectral technology combined with stoichiometry was used to classify and identify the inkblots of 42 different brands and types of black dye pens commonly found on the market.Firstly,hyperspectral scanning of ink samples from 42 black dye pens in the range of 450-950 nm was performed.With the help of SPSS 26 software and Originpro2023,the systematic cluster analysis method was used to classify the ink samples,and the principal component analysis was used to verify the classification results.Systematic cluster analysis of hyperspectral data could divide 42 ink samples into two categories with a total of 7 categories,including 4 types of oil-based pens and 3 types of water-based pens.Hyperspectral technology combined with stoichiometry can classify and identify black dye pen ink,which provides technical support for the detection of black dye pen ink in actual cases.
作者
马建一
陈维娜
Ma Jianyi;Chen Weina(Collage of Investigation,People's Public Security University of China,Beijing 100038,China)
出处
《实验与分析》
2024年第3期17-21,共5页
LABOR PRAXIS
基金
中国人民公安大学刑事科学技术双一流创新研究专项(2023SYL06)。
关键词
高光谱技术
系统聚类
主成分分析
黑色染料笔墨迹
油基笔墨迹
水基笔墨迹
hyperspectral technology
phylogenetic clustering
principal component analysis
black dye pen ink
oilbased pen ink
water-based pen ink
