Geographical Information Systems An Overview
نویسنده
چکیده
Although many GIS have been successfully implemented, it has become quite clear that two-dimensional maps with most complex contours and color schema cannot precisely present multidimensional and dynamic spatial phenomena. Most GISs in use today have not been designed to support multimedia data and therefore have very limited capability due to the large data volumes, very rich semantics and very different modeling and processing requirements. This paper discusses some of the features of a GIS, the general trends in this field and the technology behind it. It also describes the advantages of using multimedia to implement a GIS by extending its capabilities of presenting geographic and other information. Then the main subsystems of a GIS have been presented. This paper also identifies some of the key areas where Multimedia GIS systems could be very useful.
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