Research On Automatic Identification Method Of Urban Road Sign Information Continuity

As an important part of urban traffic management system,the indication of road signs is of great significance for road information instruction,path guidance,traffic organization and capacity excavation.However,because of the continuous development of the city,it is unreasonable to set the point position,setting method and the method of information selection in the setting process,which leads to many discontinuous problems in the information in the city,such as incomplete information,unclear level,and discontinuous instruction information.The complexity of the road network and the rapid development of the road network make the information continuity of the road sign more and more important.In the present study,different scholars have their own opinions on the continuity of the information of the road sign.Given are the more ambiguous definition,for the indication of the road sign information set up a lot of special problems are not specifically proposed,this article on the basis of existing research,put forward their own indicators of the definition of information continuity,Based on this definition,a continuous automatic model is constructed.In order to obtain a continuous recognition result of the same standard from the model method established in this paper,the qualitative and quantitative evaluation of the setting level of the indication information is given.First,based on the existing research on the continuity of the indication road sign,this paper puts forward its definition of the continuity of the reference sign information,and makes a continuous judgment on the existence of different name,large location,including small location,the mismatch between the road condition and the indication in the setting of the indication information.In view of the problems of information indicating unclear information,information overload and indication path discontinuity,the influencing factors of continuity are analyzed.This paper analyzes the quantitative index of the continuity of the indicator by means of influencing factors,defines the index and gives the calculation method of the index.Secondly,the importance of the path search algorithm in the whole continuity recognition algorithm is determined from the method of index calculation,the road network and the reference information data model oriented to the indication road is established,and the depth first path search algorithm based on the effective path is studied,which lays the foundation for the calculation of the index.At last,based on the characteristics of multiple index and multiple rules in the process of identifying the information continuity of the reference signs,this paper chooses the fuzzy inference method as the core,clustering analysis,depth first path searching,etc.It is proved that the automatic recognition method is high in efficiency and accuracy,and it can effectively help managers to identify and manage the information continuity of Yuzhong District.