A Multi-Scale Approach to Rapid Transmission of Vector River Network Data via the Internet

摘要：

　　Rapid transmission of vector map data over the Internet has become a hot issue in the field of spatial data delivery in web-based environment because of the conflict between huge quantity of map data amount and limited network bandwidth.A method of organizing and transmitting vector river data via the Internet is put forward in this paper.This approach considers two levels of importance of river data,i.e.the importance of river branches and the importance of the points belonging to each river branch,and forms data packages according to the two levels of importance.Our experiments have shown that the proposed approach can reduce 90% of original data as well as preserve the river structure well.

关键词： Vector river network data multi-scale progressive transmission

作者: Weifang Yang Jonathan Li Zhonghui Wang

作者单位: School of Civil Engineering Lanzhou Jiaotong University Lanzhou,China Department of Geography and Environmental Management University of Waterloo Ontario, Canada School of Math, Physics & Software Engineering Lanzhou Jiaotong University Lanzhou,China

会议类型: 国际会议

会议名称: 2012年水资源综合管理地理信息国际会议

会议地点: 兰州

会议语种:英文

页码: 1-5

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）