A shortest path approach to wireframe to solid model conversion
SMA '95 Proceedings of the third ACM symposium on Solid modeling and applications
Implicit fairing of irregular meshes using diffusion and curvature flow
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Introduction to Algorithms
A Review of 3D Reconstruction Techniques from 2D Orthographic Line Drawings
GMAI '07 Proceedings of the Geometric Modelling and Imaging
A survey on geometrical reconstruction as a core technology to sketch-based modeling
Computers and Graphics
IBM Journal of Research and Development
IBM Journal of Research and Development
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Industrial esthetic designers typically produce hand-drawn sketches in the form of orthographic projections. A subsequent translation from 2D-drawings to 3D-models is usually necessary. This involves a considerably time consuming process, so that some automation is advisable. Common approaches to this ''reconstruction problem'' start directly from ''exact'' 2D vector representations or try to vectorize 2D raster images prior to the reconstruction phase. These approaches, however, typically fail to deal with free form geometries like the ones commonly found in esthetic industrial design. This work presents a new methodology suitable for free form geometries, comprising the generation and processing of a 3D voxel image obtained from a hand drawing, the creation of a set of 3D curves fitting the voxel image and the automatic generation of surface patches on the resulting curve network. Several case studies are also presented in order to emphasize and discuss strengths and weaknesses of the proposed method.