Multispectral Imaging for Fingerprint Detection Using Computer Projector
The use of computer projectors as controlled light sources and digital cameras as image detectors (the so-called computer projector photo-assisted system,CPPS)is an ubiquitous alternative for the examination of indefinite fingerprints in forensic identification laboratories.The performance of CPPS for such examinations depends on several factors,from which the most relevant are the conformation of fingerprint substances and the composition of illuminating sequences.In this paper,with the aid of a chrominance model,the correlation of spectral fingerprints with illuminating colors is investigated,allowing one to determine the redundancy and limitation with respect to visible spectroscopy displayed by the computer projector.Difference spectral analysis and ratio spectral analysis are introduced and theirs properties compared with standard procedures.
Multispectral imaging Chrominance model Fingerprint detection CPPS
Qingzhi Feng Haobo Li Chunbing Zhou
Department of Forensic Science and Technology,China Criminal Police College,Shenyang 110035,Liaoning Industry Park District Branch,Suzhou Police Bureau Suzhou 215123,Jiangsu,China
国际会议
大连
英文
1419-1422
2008-07-27（万方平台首次上网日期，不代表论文的发表时间）