In order to reduce the complexity of image recognition and improve the recognition speed for license plate, the gray of the plate image is adjusted before the image recognition. The binary image of license plate is characterized and contrasted with the rotated binary image, and the various uncertainties could be proposed by means of Fourier transform algorithm. By using Fourier descriptors, the standard characteristic Fourier descriptors of license plate could be extracted. The characters of license plate could be recognized and positioned through the feature extraction and matching process of license plate.
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程龙,熊凌,李开寒.基于傅里叶描述子在车牌识别中的应用[J].机床与液压,2014,42(24):98-102. . Recognition of license plate based on Fourier Descriptors[J]. Machine Tool & Hydraulics,2014,42(24):98-102