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License Plate Recognition Algorithm for Passenger Cars in Chinese Residential Areas

机译:中国居民区乘用车车牌识别算法

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摘要

This paper presents a solution for the license plate recognition problem in residential community administrations in China. License plate images are pre-processed through gradation, middle value filters and edge detection. In the license plate localization module the number of edge points, the length of license plate area and the number of each line of edge points are used for localization. In the recognition module, the paper applies a statistical character method combined with a structure character method to obtain the characters. In addition, more models and template library for the characters which have less difference between each other are built. A character classifier is designed and a fuzzy recognition method is proposed based on the fuzzy decision-making method. Experiments show that the recognition accuracy rate is up to 92%.
机译:本文提出了一种解决中国居民社区行政管理中的车牌识别问题的方法。车牌图像通过灰度,中间值过滤器和边缘检测进行预处理。在车牌定位模块中,边缘点的数量,车牌区域的长度和每条边缘点的数量用于定位。在识别模块中,本文采用统计字符法和结构字符法相结合的方法来获得字符。另外,针对彼此具有较小差异的字符,建立了更多的模型和模板库。设计了一种字符分类器,并提出了一种基于模糊决策方法的模糊识别方法。实验表明,识别准确率高达92%。

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