Skip to main content

Measurement Uncertainty When Estimating the Velocity of an Allegedly Speeding Vehicle from Images

Buy Article:

$43.00 plus tax (Refund Policy)


Sometimes the question arises whether it is possible to estimate the velocity of a speeding car recorded by closed circuit television cameras. By estimating the travelled distance of the car between two images and the time elapsed, estimation of the velocity is rather straightforward. However, to quantify the corresponding measurement uncertainty, the data analysis becomes more involved. The article describes two approaches as to how to derive the measurement uncertainty. In the first method, distance and timing are estimated separately, and the two uncertainties are combined to derive the measurement uncertainty for the velocity. For this, a frequentist and a Bayesian approach are described. In the second method, the measurement uncertainty for the speed is derived directly using validation recordings of a car driving by at known speed. The choice which method to use depends mainly on the length of the path that the car has travelled.
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Keywords: CCTV images; digital images; forensic science; photogrammetry; statistics; validation

Document Type: Research Article

Affiliations: Netherlands Forensic Institute, PO Box 24044, 2490 AA, The Hague, The Netherlands.

Publication date: 2010-09-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more