NCJ Number
231233
Journal
Journal of Forensic Sciences Volume: 55 Issue: 3 Dated: May 2010 Pages: 784-787
Date Published
May 2010
Length
4 pages
Annotation
In this study, affine transformations were applied to bite marks to establish if minimal distortions would affect the mathematically determined relationships of the defined features.
Abstract
In a real case study, it was then tested whether the distorted bite mark matched the dentition of the perpetrator by applying an affine transformation. Bite marks inflicted on animate and inanimate objects will undergo a certain degree of deformation. This fact remains one of the biggest stumbling blocks when analyzing evidence for court presentation. It has been demonstrated that the reliability of pattern association analysis will not be affected by minimal degrees of warping, shrinkage, and distortion. This was confirmed to be the case in the current study. Affine transformations will thus not affect the relationships of the individual features found in bite marks. The numerical calculations validate the reliability of pattern association analysis in the presence of minimal amounts of warping, shrinkage, and distortion. 4 figures and 10 references (Published Abstract)