The effect of ANPR Camera Settings on System Performance

Law Enforcement agencies in the UK have utilised Automatic Number Plate Recognition (ANPR) technology for several decades with a number of high profile crime detection successes. In an effort to ensure that end users are provided with the very best investigative opportunities, data accuracy and system performance must be constantly reviewed. This primary research has been conducted with the aim of better understanding the effect of ANPR camera settings on the performance of imaging systems used by the Police and other Law Enforcement Agencies for crime prevention and detection purposes. This preliminary research examines key performance factors and outlines empirical real world field assessment of the infra-red set up of a poorly performing fixed ANPR system. The outcomes of this work are intended to support the formulation of international guidance around camera set up published alongside the latest National ANPR Standards for Policing.