Vector maps compression for progressive transmission over the Internet

Kolesnikov, Alexander
April 2009
Journal of Digital Information Management;Apr2009, Vol. 7 Issue 2, p90
Academic Journal
A problem of progressive transmission of the large vector maps from spatial information systems to the clients over the Internet or by channels with narrow bandwidth is considered. First, a simplified version of the vector map is sent to a client. The client can manipulate with the data at the coarse resolution level and request finer version of the map or of a part of the map. The proposed algorithm includes optimal multiresolution polygonal approximation used jointly with multiresolution quantization and compression of the quantized data with arithmetic codes. The proposed approach demonstrates a high compression performance with optimal and heuristic algorithms for polygonal approximation.


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