覃锡忠, 贾振红, 汪烈军. 基于梯度方向图像局部增强的车牌定位算法[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2007, 107(3): 346-348.DOI：
基于梯度方向图像局部增强的车牌定位算法
摘要
车牌识别是智能交通系统中的关键技术
而车牌定位是识别的先决工作
本文在定位过程中提出了根据梯度的变化方向
对图像的目标部分增强明暗的对比
克服了图像目标局部灰度变化差异性而引起的二值图像中字符笔划缺失或粘连问题
为车牌定位和字识别提供更为可靠二值图像.
Abstract
The identification of number plate is the important constituent parts of intelligence traffic system
and the orientation is the predetermination of the identification.A new orientation algorithm to the identification of number plate is proposed
which is based on the transformated direction of the grads in the proceess to orientation.The light and shade in image is contrasted in this paper
and conquered the lack of character stroke or the character conglutination
which is arosed by the diversity of the change of the partial gray degree in binarized image
and it can provide a more credible binarized image to vehicle license plate location and character recognation.
关键词
Keywords
references
Kamat,V.and Ganesan S.An Efficient Implementation of the Hough Transform for Detecting Vehicle License PlatesUsing DSP'S[C].Cellular Neural Networks and Their Applications.Proceedings The IEEE 31st Annual 1997 Interna-tional Carnahan Conference.1997,209-218.
Halina Kwasnicka and Bartosz Wawrzyniak.License plate localization and recognition in camera pictures[C].ArtificialIntelligence Methods,2002,13-15.
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