Dataset Information

Contactless Size Reference in Forensic Photography-Design and Verification of the Novel FreeRef-1 System.

ABSTRACT: In photographs of evidence in forensic investigations, physical size references (e.g., rulers or stickers) are often placed next to a trace to allow us to take measurements from photos. However, this is laborious and introduces contamination risks. The FreeRef-1 system is a contactless size reference system that allows us to take forensic photographs without having to be close to the evidence, and allows photographing under large angles without losing accuracy. The FreeRef-1 system performance was assessed using technical verification tests, inter-observer checks and user tests with forensic professionals. The results show that the measurements taken with photos using the FreeRef-1 system were at least as accurate as those taken using conventional techniques. Furthermore, with the FreeRef-1 system, even photographs taken under strongly oblique angles provided accurate measurements. The results suggest that the FreeRef-1 system will facilitate photographing evidence even in hard-to-reach places, such as under tables and on walls and ceilings, while increasing the accuracy and speed.

SUBMITTER: Schiks LAH

PROVIDER: S-EPMC10146244 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature

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Contactless Size Reference in Forensic Photography-Design and Verification of the Novel FreeRef-1 System.

Schiks Luuk A H LAH Cook Maura M Lipman Laurentius R LR van Dijke Arjan P AP Hutchinson Kim K van den Hoven Paul P Loeve Arjo J AJ

Sensors (Basel, Switzerland) 20230407 8

In photographs of evidence in forensic investigations, physical size references (e.g., rulers or stickers) are often placed next to a trace to allow us to take measurements from photos. However, this is laborious and introduces contamination risks. The FreeRef-1 system is a contactless size reference system that allows us to take forensic photographs without having to be close to the evidence, and allows photographing under large angles without losing accuracy. The FreeRef-1 system performance w ...[more]

PMID: 37112132

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Dataset Information

Contactless Size Reference in Forensic Photography-Design and Verification of the Novel FreeRef-1 System.

Publications

Contactless Size Reference in Forensic Photography-Design and Verification of the Novel FreeRef-1 System.

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