The high performance car license plate recognition system and its core techniques

Abstract

In this paper, a high performance car license plate recognition system and its some core techniques have been introduced briefly. The introduced significant techniques include: 1) novel lighting and imaging mechanics; 2) newly developed algorithms for license plate location; 3) deformable template based character segmentation techniques. For license plate location from real nature light image, we present MGD model of car plate. Using this model, coarse and accurate license plate location algorithm has been developed. The location rate of the newly developed algorithm has reached 97.8%. The introduced systems have been used widely in china. In real all-weather application, it has shown over 97% recognition rate. This excellent system can be used in expressway toll , car monitoring and electronic-police system.