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Suspect Height Estimation Using the Faro Focus(3D) Laser Scanner.

Monique Johnson¹, Eugene Liscio²

¹University of Toronto Mississauga-Forensic Science, 3539 Mississauga Road, Mississauga, ON, L5L 1C6, Canada.

Journal of Forensic Sciences

|August 11, 2015

Summary

This summary is machine-generated.

Laser scanning technology can accurately estimate suspect height from surveillance video. This method proved reliable whether individuals wore headwear or not, offering a potential tool for forensic investigations.

Keywords:

FARO Focus3D forensic science laser scanning point cloud model suspect height estimation validation video surveillance

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Area of Science:

Forensic Science
Photogrammetry
Biometrics

Background:

Limited research exists on laser scanning for height measurement from surveillance video.
Accurate suspect height estimation is crucial in forensic investigations.

Purpose of the Study:

To evaluate the accuracy of a specific laser scanner in estimating suspect height from video footage.
To determine if headwear affects the accuracy of laser scanner height estimations.

Main Methods:

Ten individuals with known heights measured by an anthropometer participated.
Participants were recorded on video in a simulated crime scene, with and without headwear.
A one-way t-test compared known heights to laser scanner software estimations.

Main Results:

Laser scanner height estimations showed no significant difference from known heights.
Accuracy was maintained regardless of whether participants wore headwear (p=0.186) or not (p=0.707).

Conclusions:

Laser scanning technology demonstrates potential as a reliable method for determining suspect height from video evidence.
This technique could be a valuable addition to investigators' toolkit for video analysis.