The application of infrared chemical imaging to the detection and enhancement of latent fingerprints: method optimization and further findings

Détails

ID Serval
serval:BIB_FAF3C91DCBE0
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The application of infrared chemical imaging to the detection and enhancement of latent fingerprints: method optimization and further findings
Périodique
Journal of Forensic Sciences
Auteur(s)
Tahtouh  M., Despland  P., Shimmon  R., Kalman  J. R., Reedy  B. J.
ISSN
0022-1198 (Print)
Statut éditorial
Publié
Date de publication
09/2007
Volume
52
Numéro
5
Pages
1089-96
Notes
Journal Article
Research Support, Non-U.S. Gov't --- Old month value: Sep
Résumé
Fourier transform infrared (FTIR) chemical imaging allows the collection of fingerprint images from backgrounds that have traditionally posed problems for conventional fingerprint detection methods. In this work, the suitability of this technique for the imaging of fingerprints on a wider range of difficult surfaces (including polymer banknotes, various types of paper, and aluminum drink cans) has been tested. For each new surface, a systematic methodology was employed to optimize settings such as spectral resolution, number of scans, and pixel aggregation in order to reduce collection time and file-size without compromising spatial resolution and the quality of the final fingerprint image. The imaging of cyanoacrylate-fumed fingerprints on polymer banknotes has been improved, with shorter collection times for larger image areas. One-month-old fingerprints on polymer banknotes have been successfully fumed and imaged. It was also found that FTIR chemical imaging gives high quality images of cyanoacrylate-fumed fingerprints on aluminum drink cans, regardless of the printed background. Although visible and UV light sources do not yield fingerprint images of the same quality on difficult, nonporous backgrounds, in many cases they can be used to locate a fingerprint prior to higher quality imaging by the FTIR technique. Attempts to acquire FTIR images of fingerprints on paper-based porous surfaces that had been treated with established reagents such as ninhydrin were all unsuccessful due to the swamping effect of the cellulose constituents of the paper.
Mots-clé
Cyanoacrylates *Dermatoglyphics Humans Image Processing, Computer-Assisted Porosity Spectroscopy, Fourier Transform Infrared/*methods Surface Properties Volatilization
Pubmed
Web of science
Création de la notice
25/01/2008 12:40
Dernière modification de la notice
03/03/2018 22:56
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