Visibility Assessment of Latent Fingerprints on Challenging Substrates in Spectroscopic Scans

Abstract : Our objectives for crime scene forensics are to find the substrates on which finger traces are visible in limited ranges of the electromagnetic spectrum using UV-VIS reflection spectroscopy and to determine the optimal ranges in the interval from 163 to 844 nm. We subjectively assess the visibility of fingerprints within detailed scans with a resolution of 500 ppi and compare the results with those of an automatic visibility assessment based on the streakiness score. Ten different substrates are evaluated, each with three fingerprints from different donors. Streakiness score is confirmed to be a suitable fingerprint visibility indicator on non-structured substrates. We identify two substrates, namely metallic paint and blued metal, on which ridge lines become visible exclusively in UV range from 200 to 400 nm and from 210 to 300 nm correspondingly.
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Communication dans un congrès
Bart Decker; Jana Dittmann; Christian Kraetzer; Claus Vielhauer. 14th International Conference on Communications and Multimedia Security (CMS), Sep 2013, Magdeburg,, Germany. Springer, Lecture Notes in Computer Science, LNCS-8099, pp.200-203, 2013, Communications and Multimedia Security. 〈10.1007/978-3-642-40779-6_18〉
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Mario Hildebrandt, Andrey Makrushin, Kun Qian, Jana Dittmann. Visibility Assessment of Latent Fingerprints on Challenging Substrates in Spectroscopic Scans. Bart Decker; Jana Dittmann; Christian Kraetzer; Claus Vielhauer. 14th International Conference on Communications and Multimedia Security (CMS), Sep 2013, Magdeburg,, Germany. Springer, Lecture Notes in Computer Science, LNCS-8099, pp.200-203, 2013, Communications and Multimedia Security. 〈10.1007/978-3-642-40779-6_18〉. 〈hal-01492822〉

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