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9 January 1984 Motion Analysis Of Simulated Vehicle-Pedestrian Impacts Using Automated High-Speed Cinephotogrammetry
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Abstract
The body of a pedestrian, who is impacted by a vehicle, often executes a complicated spatial motion during the collision. In experimental impacts under laboratory conditions high-speed cinetechniques lend themselves to be utilized for analysing the characteristics of such spatial motions providing that at least two time-matched views of the scene are available. In order to facilitate an efficient analysis of the motion phenomena associated with simulated vehicle-pedestrian collisions, a computercontrolled film scanning system was developed which is based on a stop-frame film transport, a video-dissector, and a video-speed image RAM. The random-access features of the dissector enable a fast automatic film frame analysis while the high speed of the image memory allows to constantly observe the scanning procedure, if necessary. Marker identification is performed under operator control utilizing the interactive features of the system. An assessment of the accuracy of the automated reconstruction of spatial marker trajectories revealed that moving objects are in general located to an accuracy of better than 7mm in a scene of typically 7m in diameter. The application of the method to experimental vehicle-pedestrian impacts is demonstrated.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Francois Mesqui and Peter Niederer "Motion Analysis Of Simulated Vehicle-Pedestrian Impacts Using Automated High-Speed Cinephotogrammetry", Proc. SPIE 0427, High Speed Photography, Videography, and Photonics I, (9 January 1984); https://doi.org/10.1117/12.936289
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