Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65096
Title: Progressive transmission of vector data based on changes accumulation model
Authors: Ai, T
Li, ZL 
Liu, YL
Keywords: Progressive transmission
Map generalization
Polygon decomposition
Convex hull
Web GIS
Changes accumulation model
Issue Date: 2005
Publisher: Springer
Source: In P Fisher (Ed.), Developments in spatial data handling : 11th International Symposium on Spatial Data Handling , p. 85-96. Berlin: Springer, 2005 How to cite?
Abstract: The progressive transmission of map data over World Wide Web provides the users with a self-adaptive strategy to access remote data. It not only speeds up the web transfer but also offers an efficient navigation guide in information acquisition. The key technology in this transmission is the efficient multiple representation of spatial data and pre-organization on server site. This paper aims at offering a new model for the multiple representations of vector data, called changes accumulation model, which considers the spatial representation from one scale to another as an accumulation of the set of changes. The difference between two consecutive representations is recorded in a linear order and through gradually addition or subtraction of “change patches” the progressive transmission is realized. As an example, the progressive transmission of area features based on this model is investigated in the project. The model is built upon the hierarchical decomposition of polygon into series of convex hulls or bounding rectangles and the progressive transmission is accomplished through component of the decomposed elements.
Description: 11th International Symposium on Spatial Data Handling, Leicester, United Kingdom, August 23rd to 25th 2004
URI: http://hdl.handle.net/10397/65096
ISBN: 3540226109
9783540226109
DOI: 10.1007/3-540-26772-7_7
Appears in Collections:Book Chapter

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