Progressive Street Networks
The multi-scale representation model and the corresponding generalization method for constructing it are two key issues involved in the progressive transmission of vector map data.In this paper,the characteristics of existing approaches to the generalization of streets are summarized based on an analysis of the literature.A progressive street network representation model is introduced.Information theory has been applied for a better understanding of why and when to generalize.The metric information,topological information and thematic information are quantified for the street network.A progressive generalization algorithm of street network based on information theory is investigated.An experiment is also conducted on an urban street network map from the Compilation specifications for 1:25000 1:50000 topographic maps (GB 12343-90).This paper tries to state that progressive representation needs the support from corresponding progressive generalization algorithm and tries to introduce information theory to solve the problem of how to generalize.
Progressive transmission vector data generalization of street network multi-scale representation progressive representation progressive generalization entire street entropy information loss dual graph
J.Tian Q.S.Guo T.Zhan
School of Resource and Environment Science,Wuhan University,129Luoyu Road,Wuhan,China 430079;Key Lab Hubei University of Policy,86 Jiefang Avenue,Wuhan,China 430034
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）