Symbol representation in map image compression

Authors:
Akimov Alexander;Pasi Fränti
Affiliations:
University of Joensuu, Finland;University of Joensuu, Finland
Venue:
Proceedings of the 2004 ACM symposium on Applied computing
Year:
2004

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SVG Essentials

SVG Essentials
The emerging JBIG2 standard

IEEE Transactions on Circuits and Systems for Video Technology

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Abstract

We propose map image compression system, in which we separate text and symbol information from the rest of the data. The text and other symbols are stored as one bitmap for each symbol into a dictionary. The technical challenge of the work is to convert the symbol data directly to output format similar to that of the JBIG2 standard. In this way, the text elements and special symbols are compressed more efficiently but we still have the maps in compatible raster image format.