Our video analysis laboratory provides a wide range of investigation support services that range from providing basic velocity data to complete analysis investigation in a comprehensive report with virtual reality animation.
Accidents can be captured from a wide variety of cameras. Prior to velocity extraction, footage must be converted to an image sequence suitable for further analysis, the precise timing for each frame is then calculated, and the focal length estimated for each image. Video analysis is the first step in investigating captured aircraft, automobile, truck, motorcycle, or bicycle accidents.
Red light cameras
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Matchmoving techniques are used to determine the exact location and orientation of the camera, whether stationary or moving. Once this is done, additional analysis is conducted to calculate the location of any vehicles visible in the video. Coupled with the temporal analysis, the data reveals motion of the camera and vehicles. Position/velocity extraction provides investigators with critical data evidence to support their investigation.
Angular rotation rate
Airborne flight path
Residual analysis accuracy estimate
Comprehensive video analysis investigation report
The advantage of video analysis is that it provides its own method of validation. Derived data can be animated in a simulator, then filmed from the calculated camera position. Comparison of this visualization footage against the original video footage intuitively demonstrates how close the solution is to the actual accident parameters, and can be supported by animations from witness perspectives. Animation can also reveal additional aspects of the collision by visualizing the accident from driver or other points of view.
Camera view animation
Top-down / aerial view
Fully textured animation
Google Earth animation
Witness point of view animations
Driver point of view animation
Virtual reality animation (coming soon)
Synchronized video and animation
Synchronized video and data display
Accident Site Modelling
Photographs and video of the crash site can be stitched into a 3d point cloud model and used for measurements or additional investigation long after the site has been cleared. The model can also be employed when debriefing the accident investigation or used in animations to tell the complete story of the collision. Accident site modeling provides the opportunity to amalgamate pre-accident motion analysis with post-accident wreckage into an integrated view on the sequence of events.
Collision site point cloud
Textured 3d site model
Google Earth collision site model
Crash site measurements
Exemplar crush animation