Optimisation of an authentication system using a genetic algorithm

摘要

A method for implementing a system for authenticating an article, based upon a signature in the form of groups of data points collected when a surface structure of an article is subjected to coherent light and the light scattered by the surface structure is collected. The surface could be the paper or plastic used in a identity card or warranty document. The authentication system might include a scanner and a database of stored signatures. The method comprises: determining a set of parameters which influence the performance of the system; determining a definition of system performance; producing an initial population of parameter value sets; determining, for each parameter value set, a fitness value in terms of the system performance; identifying mating pairs of the population in accordance with the determined fitnesses; producing a new population by crossing the mating pairs; repeating the determining the process above until an end criterion is satisfied; and configuring the system in accordance with a selected parameter set from the final population. The parameters which influence the performance of the system might include filter parameters.