As the proliferation of video recordings increase, it is becoming more readily available in major incident and collision investigations. This growth creates significant value to the accident reconstructionist who wants to measure distance and timing for the purpose of calculating speeds of vehicles, especially in pre-impact conditions where no physical evidence is available on the scene. It may also be useful to the analyst trying to determine the actions of persons in major incident investigations.
However, video evidence from surveillance systems is not always what it appears to be. Timing is often inaccurate; frame rates are often misidentified and misleading and the method of counting frames and assuming a consistent frame rate has led many investigators to produce inaccurate measurements.
These technical limitations have forced many agencies to prohibit speed calculations from video evidence as they learned that the data can have a significant variation and compromise even the best report. It is not uncommon to see comprehensive scientific presentations being entirely dismissed over a single critical element, like misrepresenting speed through a frame rate calculation.
The new Variable Frame Rate (VFR) Lightboard provides an easy workflow to accurately calculate vehicle speeds from any surveillance camera device within a reported margin of error.
If you are already familiar with previously available lightboards you will appreciate knowing that this unit weighs less 1 kg!
Want to know more?
If you would like to know more about this new product please contact us at [email protected]
2021 VIDEO EVIDENCE TRAINING SYMPOSIUM
There is a session in the upcoming Symposium which focuses on the use of video in speed calculations
Wednesday, March 24, 2021
Advancements in Technology for Calculating Speeds
12 PM EDT
Michael Jorgensen, Accident Reconstruction Specialist and Forensic Expert
James Kennedy, Director of Forensic Video/Multimedia Services
Brandon Wahl Manager of Support Services
Read more about the Symposium here