标志识别技术在智能交通系统中的应用  

Application of mark recognition technology in intelligent transportation system

作　　者：涂豫[1] 

机构地区：[1]河南工业职业技术学院,河南南阳473000

出　　处：《信息技术》2017年第11期172-175,共4页Information Technology

摘　　要：针对现存地图识别匹配算法存在匹配精度不高的问题,文中基于马尔可夫链的理论知识,充分考虑影响匹配精度的因素,建立隐马尔可夫模型,然后结合交通中常用的标志识别算法,设计应用性能更好的基于隐马尔科夫模型的标志识别匹配算法,最后通过实例验证该算法的正确性。通过计算得到该算法的匹配正确率为0.9602,有力地说明了该算法在匹配过程中的有效性。Aiming at the problem that the matching accuracy of existing map recognition algorithm is not high,this paper based on the theory of Markov chain,and considers the factors which influence the precision of matching,the Hidden Markov Model is established. Then combined with traffic mark recognition algorithm,and it designed a better matching algorithm based on hidden markov model（ HMM）. Finally,an example is presented to verify the correctness of the proposed algorithm. The matching accuracy of the proposed algorithm is 0. 9602,which demonstrates the effectiveness of the algorithm in matching process.

关 键 词：GPS系统 标志识别 地图匹配算法 马尔可夫链 大圆距离 隐马尔可夫模型 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]