摘要
交通标志检测是道路交通标志识别系统中的一个关键问题。本研究在分析中国道路交通标志的颜色和几何形状这2种先验特征的基础上,提出了颜色形状对的概念,并据此构造了一种新的交通标志颜色—几何模型。该模型由交通标志的3种基本颜色和5种基本形状构成,充分体现了颜色与几何形状具有唯一确定性关系这一重要特点。因此,基于颜色-几何模型的交通标志检测可以同时实现交通标志的粗分类,将116种中国道路交通标志直接分为7个子类,降低了道路交通标志识别系统的复杂性。仿真实验研究表明,采用该模型的交通标志检测与粗分类的正确率均达到了100%,具有良好的实时性和有效性。
Detecting traffic sign plays an important role in traffic sign recognition system. According to the color and shape characteristics of Chinese traffic signs a novel color-geometric modeling method based on color-shape pair for traffic sign recognition is presented in this paper. This model only focuses on the stable relationship between color and shape in Chinese traffic signs, which is composed of three essential colors and five essential geometrical shapes. Accordingly, based on above color-geometric model, Chinese traffic signs are detected and 116 kinds of Chinese traffic signs are classified into seven classes, which reduce the complexity of the traffic sign recognition system. The simulation experiment results show that adopting the proposed model the correctness rate of traffic sign detection and coarse classification could achieve 100% , which verifies the robustness, real-time performance and effectiveness of this method.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2007年第5期956-960,共5页
Chinese Journal of Scientific Instrument
