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	STUDIA INFORMATICA - Issue no. 1 / 2008

	Article:	IMPROVING THE ACCURACY OF DIGITAL TERRAIN MODELS. Authors: GABRIELA DROJ.


	Abstract: The change from paper maps to GIS, in various kinds of geographical data analysis and applications, has made it easy to use the same spatial data for different applications and also for combining several layers into quite complex spatial models, including the three-dimensional reference space (surface), known as Digital Terrain Model (DTM). The objectives of this study are: (1) to compare the different algorithms involved in producing a DTM, (2) to establish the factors which affect the accuracy of the DTM and (3) to improve the quality of the generated DTM.




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