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Recovery of 3D footwear impressions using a range of different techniques.

Larsen, H.J. and Bennett, M. R., 2021. Recovery of 3D footwear impressions using a range of different techniques. Journal of Forensic Sciences, 66 (3), 1056-1064.

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1556-4029.14662.pdf - Published Version
Available under License Creative Commons Attribution.


DOI: 10.1111/1556-4029.14662


Three-dimensional (plastic) footwear impressions are frequently found at, or in the vicinity of a crime scene, and may provide a valuable form of evidence or intelligence. This paper compares the traditional methods of casting and/or two-dimensional photography with Structure from Motion (SfM) photogrammetry. We focus both on the recovery of class characteristics (sole pattern) and randomly acquired characteristics caused by damage. We examine how different recovery techniques influence visualization of outsole features and discuss what effect this may have on evidential value. Five shoes and their associated three-dimensional impressions made in both sand and soil were compared using a grid system and tread descriptors commonly used in the UK. We conclude that within the limitations of this study SfM photogrammetry allows superior levels of visualization of both class and randomly acquired characteristics, giving a better definition in detail in some instances. The use of SfM as a complementary approach can therefore lead to a potential increase in evidential value.

Item Type:Article
Additional Information:Funding information This research is a part of an ongoing project originally funded by the UK Natural Environment Research Council grant number NE/M021459/1.
Uncontrolled Keywords:casting ; evidence recovery ; footwear impression ; photogrammetry ; randomly acquired characteristics ; three-dimensional
Group:Faculty of Science & Technology
ID Code:35035
Deposited By: Symplectic RT2
Deposited On:11 Jan 2021 15:10
Last Modified:14 Mar 2022 14:25


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