计算机应用与软件Issue(5)：163-167,5.DOI:10.3969/j.issn.1000-386x.2014.05.042
基于先验知识和纹理方向性的车标定位方法
VEHICLE-LOGO LOCATING METHOD BASED ON PRIOR KNOWLEDGE AND TEXTURE DIRECTIONALITY
王建 1任明武1
作者信息
- 1. 南京理工大学计算机科学与技术学院 江苏 南京210094
- 折叠
摘要
Abstract
Based on the prior knowledge and according to the relative position relationship of vehicle licence plate and vehicle-logo,first we make rough positioning of the vehicle logo and get a rectangular rough location region containing the vehicle-logo image.In order to utilise the texture directional feature of the vehicle-logo background cooling grills,we introduce the concept of texture direction measure.According to the texture measure,the textures of the grille are grouped into two categories:the horizontal-like texture and the vertical texture.In the stage of accurate location,we adopt different location algorithms in light of different texture categories respectively.For horizontal-like texture,we use dynamic templates to locate the boundary,this achieves sound location effects for sophisticated horizontal texture and complicated mesh texture;For vertical texture,we introduce the concept of edge granularity,it effectively removes the noises points outside the vehicle logo region and preserves entire information of the vehicle-logo its own.Experimental results show that the method in this paper has good robustness,it can fast and accurately locate the position of vehicle-logo,the average successful locating rate reaches 97%,and the average locating time is 22 ms in testing environment.This location efficiency and accuracy can meet the demand of real-time system.关键词
车标定位/纹理方向特征/边缘密度Key words
Vehicle-logo location/Texture directional feature/Edge density分类
信息技术与安全科学引用本文复制引用
王建,任明武..基于先验知识和纹理方向性的车标定位方法[J].计算机应用与软件,2014,(5):163-167,5.
