Infrared Spectroscopic Imaging for Noninvasive Detection of Latent Fingerprints

The capability of Fourier transform infrared (FTIR) spectroscopic imaging to provide detailed images of unprocessed latent fingerprints while also preserving important trace evidence is demonstrated. Unprocessed fingerprints were developed on various porous and nonporous substrates. Data‐processing...

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Bibliographic Details
Published in:Journal of forensic sciences 2007-01, Vol.52 (1), p.48-53
Main Authors: Crane, Nicole J., Bartick, Edward G., Perlman, Rebecca Schwartz, Huffman, Scott
Format: Article
Language:English
Subjects:
Dermatoglyphics
Fingerprinting
forensic science
Forensic sciences
FTIR
Humans
Identification
Image Processing, Computer-Assisted
Infrared imaging systems
latent fingerprints
Porosity
Principal Component Analysis
spectroscopic imaging
Spectroscopy, Fourier Transform Infrared
Spectrum analysis
Surface Properties
trace evidence
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Summary:The capability of Fourier transform infrared (FTIR) spectroscopic imaging to provide detailed images of unprocessed latent fingerprints while also preserving important trace evidence is demonstrated. Unprocessed fingerprints were developed on various porous and nonporous substrates. Data‐processing methods used to extract the latent fingerprint ridge pattern from the background material included basic infrared spectroscopic band intensities, addition and subtraction of band intensity measurements, principal components analysis (PCA) and calculation of second derivative band intensities, as well as combinations of these various techniques. Additionally, trace evidence within the fingerprints was recovered and identified.
ISSN:0022-1198
1556-4029
DOI:10.1111/j.1556-4029.2006.00330.x