Compressing Triangulated Irregular Networks
Geoinformatica
A correction to the Douglas-Peucker line generalization algorithm
Computers & Geosciences
Transmitting Vector Geospatial Data across the Internet
GIScience '02 Proceedings of the Second International Conference on Geographic Information Science
Compression of large data grids for internet transmission
Computers & Geosciences
Progressive transmission of scientific data using biorthogonal wavelet transform
VIS '94 Proceedings of the conference on Visualization '94
A wavelet-based analysis of fractal image compression
IEEE Transactions on Image Processing
Variable-resolution Compression of Vector Data
Geoinformatica
Efficient transmission of vector data over the Internet
International Journal of Geographical Information Science
Variable-scale representation of road networks on small mobile devices
Computers & Geosciences
Constrained set-up of the tGAP structure for progressive vector data transfer
Computers & Geosciences
A quantitative scale-setting approach for building multi-scale spatial databases
Computers & Geosciences
Tiled Vectors: A Method for Vector Transmission over the Web
W2GIS '09 Proceedings of the 9th International Symposium on Web and Wireless Geographical Information Systems
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The rapid transmission of vector map data over the Internet is becoming a bottleneck of spatial data delivery and visualization in web-based environment because of increasing data amount and limited network bandwidth. In order to improve the transmission performance of vector map data over the Internet, a multi-resolution model of vector map data is proposed, which constructs multiple-resolution representations of vector map data on-line prior to transmission with a vertex decimation method on the server side. The vertex decimation method was developed to extract various resolutions of vector map data on-line, and data reconstruction solution was developed to recover the original vector map data from a low-resolution one on the client side. Secondly, rules of the vertex decimation method are defined to overcome self-intersections and inconsistent topology in the multi-resolution model and corresponding algorithm was developed to test the performance and feasibility of the multi-resolution model for rapid transmission over the Internet. Experimental results reveal that the multi-resolution model of vector map data significantly improves the transmission time and decreases data amount of spatial data over the Internet.