Abstract
In assessing traffic accidents, an important aspect is clarifying visibility conditions and how the accident occurred. Traffic accidents between trucks and cyclists often have se-vere or fatal consequences. In this master thesis it is shown on the basis of a real case that the application of 3D-reconstruction, animation and visualization using head-mounted displays can make an important contribution to clarification and assessment of accidents. While 3D-applications in combination with virtual reality are often used in the gaming industry, this master thesis is about the application in accident investigation and forensics. It presents workflow steps that include data acquisition, data processing, re-construction, as well as animation and visualization.
Different scanning systems, Unmanned Aerial Vehicles, and different types of cameras are used for data acquisition, generating much more data than the classical accident investigation. In addition, multi-slice computed tomography and magnetic resonance imaging, as well as hand-held 3D-scanners, are used for documentation of human bod-ies and injuries. For data processing, the use of different software is demonstrated, and textured 3D-models of the accident scene, vehicles and persons are created. For the reconstruction, the components are merged and combined.
A special feature of this master thesis is the use of animation based on determined vehi-cle positions using head-mounted displays. In addition to the inclusion of the third di-mension, the temporal sequence of the accident can be captured. The immersion in the scene can be made possible for the evaluator and the accident can also be judged at a later date.
Compared to the representation of the visibility conditions of a traffic accident by means of two-dimensional photographs or virtually generated images, the use of head-mounted displays has several advantages for application in the future. However, for a widespread application, qualified personnel and the cooperation of different expert groups or institu-tions are necessary.
The present work is realised in collaboration with the Institute of Forensic Medicine of the University of Bern, Department of Forensic Medicine and Imaging, which cooperate with the surveying specialist unit of the Technical Accident Service of the Cantonal Po-lice of Bern.
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Abstract
In assessing traffic accidents, an important aspect is clarifying visibility conditions and how the accident occurred. Traffic accidents between trucks and cyclists often have se-vere or fatal consequences. In this master thesis it is shown on the basis of a real case that the application of 3D-reconstruction, animation and visualization using head-mounted displays can make an important contribution to clarification and assessment of accidents. While 3D-applications in combination wi...
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