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Application of Kinect gaming sensor in forensic science.
Higinio González-Jorge1, Sandra Zancajo, Diego González-Aguilera
1Department of Natural Resources and Environmental Engineering, School of Mining Engineering, University of Vigo, 36310 Vigo, Spain.
Journal of Forensic Sciences
|July 30, 2014
Summary
The Kinect sensor offers a low-cost 3D modeling solution for crime scenes. Its accuracy decreases with distance, requiring close placement for detailed measurements and limiting its effective range to approximately 3 meters.
Area of Science:
- Forensic Science
- 3D Imaging Technology
- Geomatics
Background:
- 3D modeling is crucial for forensic documentation.
- Established scanners (Faro, Trimble) are accurate but costly.
- The Kinect sensor presents a potential low-cost alternative.
Purpose of the Study:
- To evaluate the Kinect sensor's suitability for 3D crime scene modeling.
- To compare Kinect's performance against established 3D scanners.
- To determine the Kinect's data quality and measurement accuracy at various ranges.
Main Methods:
- Methodology developed to test Kinect applicability in crime scenes.
- Comparative analysis with Faro and Trimble scanners.
- Evaluation of primitive fitting, facial data quality, range-dependent data quality, and length measurement accuracy.
Main Results:
- Kinect's noise level increases with range (5 mm at 1.5 m to 15 mm at 3 m).
- Length measurement errors range from 2% to 10% at a 3 m range.
- Optimal performance requires close proximity of the sensor to the target.
Conclusions:
- Kinect can be a viable low-cost tool for 3D crime scene documentation.
- Effective use necessitates limiting the measurement range to approximately 3 meters.
- Close sensor placement is critical for achieving acceptable detail and accuracy.
