U.S. flag

An official website of the United States government, Department of Justice.

Development of a Portable 3D Scanning System for Capturing Shoe and Tire Impressions

NCJ Number
255633
Date Published
October 2020
Length
12 pages
Author(s)
Song Zhang; David Baldwin; James Wolfe
Agencies
NIJ-Sponsored
Publication Type
Research (Applied/Empirical), Report (Technical), Report (Summary), Report (Study/Research), Report (Grant Sponsored), Program/Project Description
Grant Number(s)
2016-DN-BX-0189
Annotation
This is the Summary Report on the findings and methodology of a project that tested the hypothesis that a novel noninvasive optical 3D imaging sensor can capture for forensic examination the critical, detailed characteristics of shoe or tire impressions in snow or soil and on uneven surfaces.
Abstract
This project succeeded in validating the hypothesis by developing portable and fully automated 3D systems that automatically measure high-contrast or low-reflexivity surfaces. The hardware was designed to be portable and easy to set up. The software graphical user interface (GUI) was designed to be intuitive, so users do not require training to operate it. Compared to the high-end commercially available 3D scanner (GOM ATOS CORE), the project's technology achieves a similar level of accuracy and resolution. It has the advantages, however, of being more affordable at a fraction of the cost of the commercial system, easier to operate, and more robust. Further, it is non-destructive, collects more evidence detail when an impression is fragile, saves time, and costs less to collect each impression. The 3D digital cast provides detail equal to or better than that of a physical cast and requires minimal training to capture it. 3 figures and a listing of project-related publications, papers, and presentations
Date Created: November 9, 2020