计算机应用与软件2018，Vol.35Issue(2)：224-229,266,7.DOI:10.3969/j.issn.1000-386x.2018.02.041
面向无人驾驶的高速公路指路标志字符检测
CHARACTER DETECTION OF HIGHWAY GUIDE SIGNS FOR UNMANNED DRIVING
摘要
Abstract
For the requirement of unmanned driving to obtain the visual information of expressway road in real time,a method for detecting the character of expressway sign was proposed.By using the color and the geometric features, the method obtained the highway guide sign plate and detected the character with the sign board.The steps of detecting characters were as follows.First, the binary image was obtained by the binarization method.The inclined sign was corrected by the correction method and the binary image was filtered.Secondly, the character block was obtained by using the multi-level projection strategy for the binary image,and the associated character blocks were merged according to the layout to get the character area.Finally, the HOG feature of the character area was extracted, and the pseudo target character area was removed by the support vector machine.The results of experiment indicated that recall rate of character detection exceeded 97%,and precision rate was more than 96%.关键词
无人驾驶/高速公路指路标志/多级投影/HOG特征/支持向量机Key words
Unmanned driving/Highway guide signs/Multi-level projection/HOG feature/Support vector ma-chines分类
信息技术与安全科学引用本文复制引用
徐家伟,张重阳..面向无人驾驶的高速公路指路标志字符检测[J].计算机应用与软件,2018,35(2):224-229,266,7.基金项目
核高基国家重点专项(2015ZX01041101). （2015ZX01041101）
