Feature-based terrain editing from complex sketches

Abstract : We present a new method for first person sketch-based editing of terrain models. As in usual artistic pictures, the input sketch depicts complex silhouettes with cusps and T-junctions, which typically correspond to non-planar curves in 3D. After analysing depth constraints in the sketch based on perceptual cues, our method best matches the sketched silhouettes with silhouettes or ridges of the input terrain. A deformation algorithm is then applied to the terrain, enabling it to exactly match the sketch from the given perspective view, while insuring that none of the user-defined silhouettes is hidden by another part of the terrain. We extend this sketch-based terrain editing framework to handle a collection of multi-view sketches. As our results show, this method enables users to easily personalize an existing terrain, while preserving its plausibility and style.
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Article dans une revue
Computers and Graphics, Elsevier, 2014, 45, pp.101-115. 〈10.1016/j.cag.2014.09.001 〉
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Flora Ponjou Tasse, Arnaud Emilien, Marie-Paule Cani, Stefanie Hahmann, Neil Dodgson. Feature-based terrain editing from complex sketches. Computers and Graphics, Elsevier, 2014, 45, pp.101-115. 〈10.1016/j.cag.2014.09.001 〉. 〈hal-01100061〉

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