Footwear and Tires

Data Acquisition and Software Development for Footwear & Tire Tread Impressions

The intent of this project is to produce software to extract relevant information (randomly acquired characteristics on the shoe outsole) from a digital image. A randomly acquired characteristic can be defined as a feature that has occurred randomly on a footwear outsole or tire tread. Examples of randomly acquired characteristics include cuts, scratches, tears, holes, stone holds, and abrasions. The position, orientation, size and shape of the each randomly acquired characteristic contributes to the uniqueness of a shoe outsole or tire tread. Randomly acquired characteristics may be used to identify a particular shoe or tire as the source of an impression. Software &/or resulting data should be made available to the practitioner/research community to aid in continued research. It is highly recommended to consult a qualified footwear examiner to confirm randomly acquired characteristics.

Topographical Laser Imaging and 3D Scanning of Impression Evidence

Evaluate the viability of imaging and reproducing a shoe or tire impression in snow or soil without the need for, or in lieu of, traditional casting methods.

Interested parties should review the following article:

Albertini, N., Buck, U., Naether, S. & Thali, M. J. 3D documentation of footwear impressions and tyre tracks in snow with high resolution optical surface scanning. Forensic Science International, 171 (2), 157-164

Mathematical Probabilities of Randomly Acquired Characteristics

Investigate the statistical probabilities of randomly acquired characteristics occurring in the same positions and orientations on different outsoles and/or tires.

Interested parties should review the following article:

Stone, R. S. (2006). Footwear examinations: mathematical probabilities of theoretical individual characteristics. Journal of Forensic Identification, 56 (4), 577-599.