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PhotoModeler is used by police departments, forensic scientists, and engineering firms all over the world. On this page find:
Testimonials
Here is a sampling of the comments we receive on PhotoModeler use in Accident Recon. and Forensics.
"For large scenes, the (old) system took hours. With PhotoModeler, we can just take a few photos and get out of there. Because it gives us the same accuracy, we now use PhotoModeler exclusively."- Deputy Sheriff of Salt Lake County, Mike Anderson
"I can create an accurate 3D model in PhotoModeler of virtually anything that I can photograph.
PhotoModeler saved me days, perhaps even weeks, of work and I only needed possession of the vehicle for a few hours"
- Randy Crockett, Forensic Specialist, Otto Laboratories
"We like to keep our investigations under an hour. We push our guys to get roads reopened. This tool is what we need to make it happen." - Utah Highway Patrol Capt. Robert Anderson
* Comments about our technical support from the forensics community:
"You guys are too good. I really appreciate your help sir. Keep up the good work and customer support." - Paul Gruen, Topgun Collision Reconstruction
"As always your quick and accurate help have been tremendous." - Pierre Guay, Scientific Boston
"Thank you. I appreciate your rapid response." - Tom Perl, PhD, Collision Safety Engineering
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Customers
A few of the many police and forensic engineering customers using PhotoModeler:
Alaska State Troopers
Arizona Department of Public Safety
Biomechanical Research & Testing
Crashteams
Exponent
FBI
Federal Police Academy, Germany
Knott Laboratory
Massachusetts State Police - see press release.
Metropolitan Police Department of Japan
Minnesota State Patrol
National Police Agency of Japan
National Transportation Safety Board
New Jersey State Police
New York State Police
Northwestern University Traffic Institute
Royal Canadian Mounted Police
San Diego Department Of Public Works
Solicitor General of Canada
Transportation Safety Board, Canada
US Naval Criminal Investigation
Utah Highway Patrol
Washington State Patrol
Wisconsin State Patrol
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Articles and Case Studies
SAE Papers
The Society of Automotive Engineers is a key resource for many in the forensic field. Paper in their journals are peer-reviewed making them valuable sources of information and key evidence for use in trials. A number of SAE papers have been published over the years that mention PhotoModeler - we have obtained permission to make the key ones publicly available to the readers of this site:
Accident Scene Diagramming Using New Photogrammetric Technique
SAE 970944
By Stephen Fenton, Richard Kerr, Knott Laboratory, Inc.
One of the challenges for accident reconstructionists is creating accurate accident scene
diagrams from photographs, esp when only one photograph is available, and information
about the camera that took the photograph is not available. The authors present a technique
that enables the user to create an accurate accident scene diagram from only one unknown photograph of
the accident scene, by using a combination of processes called Inverse Camera Projection and Photographic
Rectification.
[Complete article] -  2.1MB pdf
Measuring a Geometry by Photogrammetry: Evaluation of the Approach in View of Experimental Modal Analysis on Automotive Structures
SAE 2001-01-1473
By Benoit Dierckx and Christophe De Veuster, LMS International, and Pierre-Alain Guidault, ENS Cachan
The purpose of this paper is to evaluate the use of 3D photogrammetric modelling in the context of modal testing of automotive structures.
[Complete article] - 1.3MB pdf
Determination and Verification of Equivalent Barrier Speeds (EBS) Using PhotoModeler
as a Measurement Tool
SAE 2004-01-1208
By Lara L. O'Shields and Tyler A. Kress, BEST Engineering; John C. Hungerford, Hungerford and Associates; and C. H. Aikens, The University of Tennessee
The main objective of this study is to show that PhotoModeler is a suitable measurement tool for vehicle
crush measurement in the context of determining the equivalent barrier speed (EBS). The PhotoModeler process is applied to controlled crash information generated by the NHTSA.
[Complete article] - 860KB pdf
The Accuracy of Photogrammetry vs. Hands-on Measurement Techniques used in Accident
Reconstruction
SAE 2010-01-0065
By Bryan Randles, Biomechanical Research & Testing; Brian Jones, Elliott & Jones LLC; Judson Welcher and Thomas Szabo, Biomechanical Research & Testing; David Elliott, Elliott & Jones LLC; and Cameron MacAdams, Elliott & Jones, LLC
A study was conducted to assess the relative accuracy of two measurement techniques commonly used for vehicle
measurements in damaged-based accident reconstruction. The traditional technique of hands-on measurement was compared
with the use of photogrammetry for measurement of targeted damaged vehicles. Three undamaged vehicles were subjected
to 4 impacts, resulting in 4 damaged areas (two front, one side and one rear).
[Complete article] - 1.8MB pdf
Other Papers
Semi-Automated Crush Determination Using Coded and Non-Coded Targets with Close-Range Photogrammetry
Accident Reconstruction Network
By Dan Mills and Gary Carty, DCM Technical Services Inc.
Vehicle crush measurement (which is typically used to determine vehicle speed (or change in velocity : delta-v) at time of impact) has traditionally been done with tape measure or a surveyor's total station. Mills and Carty demonstrate a method which is low cost, flexible, automated and accurate using PhotoModeler and PhotoModeler's coded targets.
[Complete study] - 2.1MB pdf
Person identification by gait analysis and photogrammetry
Journal of Forensic Sciences
By N. Lynnerup, Institute of Forensic Medicine, University of Copenhagen, Denmark, and J. Vedel, 3D Photo, Aarhus, Denmark.
Using PhotoModeler and surveillance video, the authors perform measurements of height, and measurements of angle for gait analysis. Using this analysis the authors along with the police were able to correctly identify the perpetrator of a heinous crime.
[Complete study available to members - external link to abstract]
Police Take Accident Reconstruction To Skies
WCVB TV Boston
"The Massachusetts State Police are using new technology to get traffic moving sooner after a crash. ..."
[Complete Article and News Story Video - external link]
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