GIS Terrain Data Compression Using Lifting Scheme- A New Dimension

Provided by: International Journal of the Computer, the Internet and Management (IJCIM)
Topic: Data Management
Format: PDF
The lifting scheme has been found to be a flexible method for constructing scalar wavelets with desirable properties. In this paper, it is extended to the GIS data compression. A newly developed data compression approach to approximate the land surface with a series of non-overlapping triangles has been presented. Generally a Triangulated Irregular Networks (TIN) is the most common form of digital surface model that consists of elevation values with x, y coordinates that make up triangles. But over the years the TIN data representation has become a case in point for many researchers due to its large data size.

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