Free Webinar - Evaluation of Photogrammetry Survey Techniques for Forensic Collision Investigation

ABSTRACT

3D photogrammetry is increasingly recognised as a valuable tool in collision investigation, enabling the creation of accurate 3D point clouds of vehicles, scenes, and loci from a series of photographs. These models can not only document and preserve scene evidence but can also support advanced analysis including sightline assessment and camera matching, where photographs or video footage can be aligned with a reconstructed 3D environment to interpret physical evidence or vehicle/pedestrian movements.

This presentation will provide an overview of how photogrammetry works, practical guidance on achieving the best results in field applications, and an evaluation of different photogrammetric techniques and image capture methods. It will also compare the performance of several software packages (Agisoft Metashape Standard, Agisoft Metashape Professional, 3DF Zephyr Full Edition, and RealityScan) to a benchmark 3D laser scanner.

Michelle Gowan is a Consulting Forensic Engineer with Denis Wood Associates, Dublin, Ireland. Michelle has investigated more than 400 road traffic collisions since 2016 and has provided expert witness evidence in both the Republic of Ireland and Northern Ireland. She holds a master’s degree in engineering from Queen’s University Belfast and an honours degree in Forensic Road Collision Investigation from De Montfort University. She has carried out and published independent research in photogrammetry in forensic collision investigation.