一种简单快速的车标定位方法  

Fast and simple vehicle logo location method

作　　者：刘直芳[1,2] 王运琼[3] 

机构地区：[1]四川大学计算机学院,成都610064 [2]四川大学视觉合成图形图像技术国防重点学科实验室,成都610065 [3]云南师范大学计算机科学与信息技术学院,昆明650092

出　　处：《计算机应用》2009年第5期1344-1348,共5页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60736046);国家科技部中小企业技术创新基金资助项目(03C26225100257);公安部重点技术创新计划资助项目(01XM013)

摘　　要：由于视点的不同,单纯的车辆外形对车辆的类型识别不具有决定性的意义,而车标则对车辆类型具有决定意义。提出了一种快速的从粗到精的车标定位方法:首先根据车头前方车牌的纹理特征大致确定车牌位置,并结合车头本身的对称性等先验知识粗略地确定车标的位置;然后在粗定位的小范围内利用边缘特征和形态运算进行车标的定位。考虑到各种噪声以及形态学的影响,在车标识别中利用模板匹配进行精定位和粗识别。利用已有的识别方法对该车标定位算法进行了验证,结果表明,该方法能快速、准确地定位车标位置,且识别率能达到实时应用的要求。Simple appearance of the vehicle cannot be used for vehicle type recognition because of the different view angles, but vehicle logo can be used. The authors proposed a fast and simple method for vehicle logo location. Firstly, the vehicle license in front of the vehicle body could be roughly located by the texture of it, and then the position of the vehicle logo could be roughly found by taking account of the symmetrical prior knowledge. After that, the vehicle logo could be exactly detected by edge feature and morphology operation. Taking into account all kinds of noise, as well as the impact of morphology, template matching was used for precision positioning and rough identification. Experimental results prove the effectiveness of the proposed method.

关 键 词：车标 车标定位 车标识别 边缘方向直方图 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]