基于高光谱技术的复杂背景下血指纹图像分割方法研究  

Hyperspectral Imaging to Segment the Blood Fingerprint Image with Complicate Background

作　　者：朱镥文 蔡竞[1] ZHU Luwen;CAI Jing(Department of Forensic Science, Zhejiang Police College, Hangzhou 310053, China)

机构地区：[1]浙江警察学院刑事科学技术系,杭州310053

出　　处：《刑事技术》2017年第6期441-445,共5页Forensic Science and Technology

基　　金：浙江警察学院校局合作项目(No.2016XJY014)

摘　　要：血指纹是刑事案件犯罪现场中较为常见的痕迹物证之一,往往是案件侦破的重要线索。本文提出了一种基于高光谱技术的复杂背景下血指纹图像的分割方法。该方法利用高光谱成像仪对不同复杂背景下的血指纹进行光谱数据采集,之后选取感兴趣区域,利用血液的光谱特性对图像进行光谱分解,从而实现目标血指纹图像的分割提取。实验表明,该方法能有效剔除复杂背景干扰,且适用范围广、分割效果好、操作具备可重复性,相较于其他传统方法具有一定优势。Blood fingerprint,one of the most common physical evidence in crime scene,plays an important role in criminal investigation although it requires to unveil clearly from the disturbance of background.This article proposes a method for extracting the blood fingerprint with complicate background by hyperspectral imaging.Firstly,the spectral data were collected from the blood fingerprints under different and complicate backgrounds by a hyperspectral imaging system.Then the region of interest(ROI)was selected out of the spectral image,decomposing and segmenting the fingerprint-carried spectral components from blood according to its distinctive spectral characteristics so that the blood fingerprint images were effectively obtained of good quality.Compared with the traditional methods,the proposed method here permits a repeatable elimination of the interference from complicate background.Therefore,it can be applied widely in extracting blood fingerprint image.

关 键 词：高光谱成像技术 血指纹 复杂背景 图像分割 

分 类 号：DF794.1[政治法律—诉讼法学]