View- and Scale-Based Progressive Transmission of Vector Data

Abstract

Abstract.Progressive transmission represents an effective means for the transmission of spatial data over the web. We classify current implementations of this paradigm as either view-or scale-based, which transmit data in a manner which is a function of the required map region or scale respectively. Although many such approaches exist, the concept of one which is both view-and scale-based has received little attention. This can be attributed to the difficulty in maintaining topological equivalence between the transmitted and original map. In this paper we propose a novel methodology for progressive transmission which overcomes this difficulty. Results demonstrate that significant reductions in the amount of data transmitted are achieved when compared to view-and scale-based approaches.

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“…The transmission of vector maps provides much flexibility compared to raster tiles, as the former are composed of multiple lines, and these lines can be simplified to save network bandwidth and improve performance. In this line, [36] proposed a method for progressive transmission of vector maps that significantly reduces the required network bandwidth.…”