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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

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Search results of heat-distorted fingerprints using sagem metamorpho AFIS

Dominick, Ainsley J. and NicDaeid, N. and Gibson, Andrew P. and Bleay, Stephen M. and Hainey, Ainsley, Home Office Scientific Development Branch, Sandridge, UK (2011) Search results of heat-distorted fingerprints using sagem metamorpho AFIS. Journal of Forensic Identification, 61 (4). p. 341. ISSN 0895-173X

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Abstract

This research investigated the identification of fingerprints which had been distorted by heating the recipient surface. Fingerprints were deposited on uPVC which was then exposed to sufficient heat to cause distortion of the surface. The fingerprints were distorted vertically and horizontally as a consequence of the flow of uPVC resulting from the exposure to heat. Photographic images were taken of the fingerprints before and after distortion and both sets of images where loaded into the Sagem Metamorpho™ AFIS. Successful identifications were obtained in a number of cases. The results indicated that the quality of the fingerprint before heating influenced the identification of the distorted fingerprint. The results also showed that the vertically distorted fingerprints were more readily identified than horizontally distorted fingerprints. This research has shown that successful identifications can be achieved from fingerprints distorted by heat providing the pre heated fingerprint is of good quality.