19 January 2001 Semiautomatic preparation of a 3D terrain model based on hand-drawn topographical maps
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Abstract
Our aim is to build a digital elevation model (DEM) for the basin of Rega River, a tributary of the Baltic Sea, on a 0.5 x 0.5 m grid. It is based on hand-drawn topographical maps in 1:10,000 scale scanned with 508 dpi accuracy. Then a digital terrain model (DTM) results from integration of DEM with remotely sensed data (space and airborne images) and detailed geodata. In this paper, we describe algorithms for noise removal, thinning and continuing contour lines, and interpolation of elevation data used to process the topographical maps.
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Jacek Pniewski, Bogdan Rosa, Tomasz Szoplik, "Semiautomatic preparation of a 3D terrain model based on hand-drawn topographical maps", Proc. SPIE 4170, Image and Signal Processing for Remote Sensing VI, (19 January 2001); doi: 10.1117/12.413905; https://doi.org/10.1117/12.413905
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