UCT CS Research Document Archive

Terrain Sketching

Gain, James, Patrick Marais and Wolfgang Strasser (2009) Terrain Sketching. In Proceedings I3D2009: The 2009 ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games, pages 31-38, Boston, Massachusetts, USA.

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Procedural methods for terrain synthesis are capable of creating realistic depictions of heightfield terrains with little user intervention. However, users often do wish to intervene in controlling the placement and shape of landforms, but without sacrificing realism. In this paper, we present a sketching interface to procedural terrain generation. This system enables users to draw the silhouette, spine and bounding curves of both extruding (hills and mountains) and embedding landforms (river courses and canyons). Terrain is interactively generated to match the sketched constraints using multiresolution surface deformation. In addition, the wavelet noise characteristics of silhouette strokes are propagated to the surrounding terrain. With terrain sketching users can interactively create or modify landscapes incorporating varied and complex landforms.

EPrint Type:Conference Paper
Keywords:terrain synthesis, wavelets, sketching interfaces
Subjects:I Computing Methodologies: I.3 COMPUTER GRAPHICS
ID Code:516
Deposited By:Gain, James
Deposited On:16 April 2009
Alternative Locations:http://people.cs.uct.ac.za/~jgain/publications/terrsketch.pdf