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Suspect Height Estimation Using the Faro Focus3D Laser Scanner |
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| Authors: | Monique Johnson HBSc Eugene Liscio PEng |
| Affiliation: | 1. University of Toronto Mississauga—Forensic Science, 3539 Mississauga Road, Mississauga, ON, L5L 1C6 Canada
Additional information and reprint requests: Monique Delicia Johnson, H.BSc. University of Toronto Mississauga 40 Elana Drive North York, ON M3N 2C2 Canada E-mail: moniqued.johnson@mail.utoronto.ca;2. AI2-3D, 352 Via Carmine Avenue Woodbridge, Ontario, L4H 2N8 Canada |
| Abstract: | At present, very little research has been devoted to investigating the ability of laser scanning technology to accurately measure height from surveillance video. The goal of this study was to test the accuracy of one particular laser scanner to estimate suspect height from video footage. The known heights of 10 individuals were measured using an anthropometer. The individuals were then recorded on video walking along a predetermined path in a simulated crime scene environment both with and without headwear. The difference between the known heights and the estimated heights obtained from the laser scanner software were compared using a one-way t-test. The height estimates obtained from the software were not significantly different from the known heights whether individuals were wearing headwear (p = 0.186) or not (p = 0.707). Thus, laser scanning is one technique that could potentially be used by investigators to determine suspect height from video footage. |
| Keywords: | forensic science suspect height estimation laser scanning FARO Focus3D video surveillance point cloud model validation |
