Problems of Forensic Sciences 2001 Vol. 47 (XLVII) 291-299
COMPUTER-ASSISTED ANALYSIS OF STRIATED TOOLMARKS AND IMPRESSIONS
Andrzej AUGUSTYN1, Przemysław KOWALSKI2, Leszek LUCHOWSKI2,3, Dariusz POJDA2, Krzysztof SKABEK2
1Forensic Laboratory of the Voiewodship Police Headquarters, Bydgoszcz, Poland
2Institute for Theoretical and Applied Computer Science, Gliwice, Poland
3Centre d’Automatique I3D, Université des Sciences et Techniques, Lille, France
Streszczenie
An image database system is presented, storing images and other data related to forensic toolmarks. The system facilitates handling and matching of toolmarks found on the crime scene or made in the forensic laboratory using suspected crime tools. For striated toolmarks, automatic search for probable matches is provided, subject to verification by human expert.Anumber of comparison criteria is presented. Toolmarks can also be matched manually on screen, using a virtual comparison microscope interfaced to the database. For the purpose of further development and verification of comparison algorithms, a large corpus of image fragments has been cross-compared by hand, and the resulting data is available in the public domain. The system intends to fill the gap in the forensic expert’s array of computerised tools, where similar systems for fingerprint and firearms investigation have long been taken for granted.
Słowa kluczowe
Toolmarks; Striations; Impressions; Automated matching; Forensic databases.