Forensics & Accident Recon. Articles

17 articles listed in reverse chronological order. View articles by field type using links on the right.

The Accuracy of Photogrammetry vs. Hands-on Measurement Techniques used in Accident Reconstruction
04/12/2010 | 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
SAE 2010-01-0065
Applications: All and Forensics & Accident Recon.

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).

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Police Take Accident Reconstruction To Skies
01/03/2008 | The Boston Channel
WCVB TV Boston
Applications: All and Forensics & Accident Recon.

“The Massachusetts State Police are using new technology to get traffic moving sooner after a crash. …” (article link is a cached version of the external site which is no longer active unfortunately (and it had a great video)).

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Semi-Automated Crush Determination Using Coded and Non-Coded Targets with Close-Range Photogrammetry
03/01/2007 | Dan Mills and Gary Carty, DCM Technical Services Inc.
Accident Reconstruction Network
Applications: All and Forensics & Accident Recon.

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.

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Person identification by gait analysis and photogrammetry
01/01/2005 | N. Lynnerup, Institute of Forensic Medicine, University of Copenhagen, Denmark, and J. Vedel, 3D Photo, Aarhus, Denmark
Journal of Forensic Sciences
Applications: All and Forensics & Accident Recon.

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 – the external link shows abstract to all.

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Determination and Verification of Equivalent Barrier Speeds (EBS) Using PhotoModeler as a Measurement Tool
03/08/2004 | Lara L. O'Shields and Tyler A. Kress, BEST Engineering; John C. Hungerford, Hungerford and Associates; and C. H. Aikens, The University of Tennessee
SAE 2004-01-1208
Applications: All and Forensics & Accident Recon.

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.

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Measuring a Geometry by Photogrammetry: Evaluation of the Approach in View of Experimental Modal Analysis on Automotive Structures
04/30/2001 | Benoit Dierckx and Christophe De Veuster, LMS International, and Pierre-Alain Guidault, ENS Cachan
SAE 2001-01-1473
Applications: All, Forensics & Accident Recon., and Industrial Measurement

The purpose of this paper is to evaluate the use of 3D photogrammetric modelling in the context of modal testing of automotive structures.

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Accident Scene Diagramming Using New Photogrammetric Technique
02/24/1997 | Stephen Fenton, Richard Kerr, Knott Laboratory, Inc.
SAE 970944
Applications: All and Forensics & Accident Recon.

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.

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