A Fuzzy Pretreatment Method for the Dirty Car License Plate with Noise

A method for fuzzy pretreatment of car license plate was presented in this paper. The main aim is to solve the faulty phenomenon of the spot car license plate,such as blur,weak contrast,noise,conglutination and hackle caused by the traditional binaryzation. The fuzzy enhancement was used to improve the contrast of license plate,which is convenient for the character segmentation and recognition. In addition,the fuzzy c-mean was presented to confirm the cluster threshold of the binaryzation of the car license plate,which could gained the image binaryzation. The method was contrasted with the traditional Otsu method,the experiment result showed that this method was more predominant than the traditional binaryzation method in reducing noise and distortion.