Enhanced Texture-Based Terrain Synthesis on Graphics Hardware

Ponjou-Tasse, Flora and Gain, James and Marais, Patrick (2012) Enhanced Texture-Based Terrain Synthesis on Graphics Hardware, Computer Graphics Forum, 31, 1959-1972, Blackwell Publishing Limited.

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Curvilinear features extracted from a 2D user-sketched feature map have been used successfully to constraint a patch-based texture synthesis of real landscapes. This map-based user interface does not give fine control over the height profile of the generated terrain. We propose a new texture-based terrain synthesis framework controllable by a terrain sketching interface. We enhance the realism of the generated landscapes by using a novel patch merging method that reduces boundary artefacts caused by overlapping terrain patches. A more constrained synthesis process is used to produce landscapes that better match user requirements. The high computational cost of texture synthesis is reduced with a parallel implementation on graphics hardware. Our GPU-accelerated solution provides a significant speedup depending on the size of the example terrain. We show experimentally that our framework is more successful in generating realistic landscapes than current example-based terrain synthesis methods. We conclude that texture-based terrain synthesis combined with sketching provides an excellent solution to the user control and realism challenges of virtual landscape generation.

Item Type: Journal article (paginated)
Additional Information: http://dx.doi.org/10.1111/j.1467-8659.2012.03076.x
Uncontrolled Keywords: terrain generation patch-based texture synthesis terrain sketching seam removal GPU patch merging
Subjects: Computing methodologies > Computer graphics
Date Deposited: 22 Oct 2012
Last Modified: 10 Oct 2019 15:33
URI: http://pubs.cs.uct.ac.za/id/eprint/805

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