The VUFO began recording 3D accident sites back in 2016. In the course of a joint project with the Research Association for Automotive Engineering (Forschungsvereinigung für Automobiltechnik e.V.), possibilities were sought for how a three-dimensional survey could also be possible as part of GIDAS regular operations.
Various methods were analysed at the time. The following were used Surveying theodolites, 3D scanners, surveys using photogrammetric methods and camera drones.
VUFO has developed a methodology whereby photogrammetric images of the so-called run-in areas are combined with a stereo camera device and colour laser scans from the immediate collision area using a Leica P16 scanner. The point cloud is created using Agisoft software.
This point cloud is later used directly in the reconstruction. This means that the 3D survey can be used universally (the photogrammetrically created inlet areas can also be created in rework, while the scanner can be used in almost all conditions).
We do not record every accident in 3D immediately after the time of the accident. Rather, we are convinced that the higher quality that can be achieved in reworking due to the lack of time pressure outweighs the disadvantages of immediate recording.
This opens up new possibilities for us. In addition to laser scans, which are still occasionally carried out, and standardised photogrammetry, we have once again added drone photography to our portfolio.
We have now recorded over 100 accident situations in three dimensions in the highest quality.
We are able to capture all conceivable accident situations in 3D and make them available to our own accident simulation department and our customers on request.
The high-strength vehicle structures require precise recording of the deformation of the vehicle caused by the accident. While estimates used to be made in the decimetre range, a slight distortion of the cell in modern vehicles can already have serious consequences for vehicle stability. We are therefore working on recording deformations using a suitable 3D measurement. After an overall survey of the vehicle, measurements are carried out in various sectional planes.
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