Search results of heat-distorted fingerprints using sagem metamorpho AFIS

Ainsley J. Dominick, Niamh Nic Daeid, Andrew P. Gibson, Stephen M. Bleay, Ainsley Hainey

Research output: Contribution to journalArticlepeer-review


This research investigated the results of searching fingerprints that had been distorted by heating the recipient surface. Fingerprint were deposited on uPVC, which was then exposed to sufficient heat to cause distortion of the substrate. The fingerprint were distorted vertically and horizontally as a consequence of the flOW of uPVC resulting from the exposure to heat. Photographic image were taken of the fingerprints before and after distortion, and both set of images where loaded into the agem Metamorpho AFIS. Successful matches were obtained in a number of cases. The results indicated that the quality of the fingerprint before heating influenced the matches of the distorted fingerprint. The results also showed that the fingerprints on vertically distorted substrates had more accurate search result than the horizontally distorted substrates. This research has shown that successful searches can be achieved from fingerprints recovered from substrates distorted by heat, providing the initial fingerprint is of good quality.
Original languageEnglish
Pages (from-to)341
Number of pages1
JournalJournal of Forensic Identification
Issue number4
Publication statusPublished - 2011


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