Structured Annotations for 2D- to- 3D Modeling
Structured Annotations for 2D- to- 3D ModelingYotam Gingold New York University / JST ERATOTakeo IgarashiUniversity of Tokyo / JST ERATODenis ZorinNew York UniversityAbstractWe present a system for 3d modeling of free- form surfaces from2D sketches. Our system frees users to create 2D sketches from ar-bitrary angles using their preferred tool, which may include penciland paper. A 3D model is created by placing primitives and anno-tations on the 2D image. Our primitives are based on commonlyused sketching conventions and allow users to maintain a singleview of the model. This eliminates the frequent view changes in-herent to existing 3d modeling tools, both traditional and sketch-based, and enables users to match input to the 2D guide image.
Traditional 3D modeling tools (e.g. [Autodesk 2009]) require users to learn an interface wholly different from drawing or sculpting in the real world. 2D drawing remains much easier than 3D model-
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