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3D modeling remains a notoriously difficult task for novices despite significant research effort to provide intuitive and automated systems. We tackle this problem by combining the strengths of two popular domains: sketch-based modeling and procedural modeling. On the one hand, sketch-based modeling exploits our ability to draw but requires detailed,(More)
(b) (c) (d) growing warping blending (e) (a) growing Figure 1: Example-driven result: our interactive approach enables a user to quickly design a road network for an entire city. In this example, a) the user starts with a virtual city using roads from Jiangmen, China (one of the world's 10 fastest-growing cities). b) The user selects a target space for a(More)
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