Toby Terpstra is a Senior 3D Analyst at J.S. Held, specializing in photogrammetry, video analysis, and 3D site reconstruction. He has provided expert testimony in both state and federal courts on civil and criminal cases. He has authored over 20 peer-reviewed publications, through the Society of Automotive Engineers (SAE), the Acoustical Society of America (ASA), and the Association for Crime Scene Reconstruction (ACSR).
Mr. Terpstra is a certified Forensic Video Technician through the Law Enforcement & Emergency Services Video Association (LEVA) and is recognized as a Master Instructor by SAE for his ACTAR-accredited course, Photogrammetry and Analysis of Digital Media. He contributes as a peer reviewer for SAE, ACSR, and the Association of Firearm and Tool Mark Examiners (AFTE), and assists in teaching laser scanning certification courses through the International Association of Forensic Security and Metrology (IAFSM).
He serves on the Forensic Metrology Task Group within the Organization of Scientific Area Committees for Forensic Science (OSAC), where he also chairs the Video Analysis Task Group. Mr. Terpstra is also a member of the Video Committee in the Scientific Working Group on Digital Evidence (SWGDE) and actively contributes to the development of standards and best practices in forensic video analysis and metrology.
