Optimizations of raster map visualization in mobile GIS

Authors:
Dejan Rancic;Bratislav Predic;Aleksandar Dimitrijevic
Affiliations:
Computer Science Department, Faculty of Electronic Engineering, University of Nis, Serbia and Montenegro;Computer Science Department, Faculty of Electronic Engineering, University of Nis, Serbia and Montenegro;Computer Science Department, Faculty of Electronic Engineering, University of Nis, Serbia and Montenegro
Venue:
ICCOMP'06 Proceedings of the 10th WSEAS international conference on Computers
Year:
2006

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Abstract

Development of geographic information systems for mobile and hand held computer devices requires significantly modified approach in comparison to development of more traditional GISs. Main issues to be addressed are efficient handling of limited memory and processing power, appropriate management and presentation of information on highly restricted devices and design of appropriate user interfaces. This paper addresses issues concerning efficient raster map visualization in the wirelessly networked client / server environment. Analyzed scenario is mobile GIS client retrieving raster maps from the map server using wireless network connection. Raster map segments are downloaded upon being needed and cached locally on the mobile device. Main focus of this paper are optimizations of this downloads and local caching process.