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Algorithms for the physical rendering and assembly of octree models

Medellin, H. and Corney, J.R. and Davies, J.B.C. and Lim, T.C. and Ritchie, J.M. (2006) Algorithms for the physical rendering and assembly of octree models. Computer-Aided Design, 38 (1). pp. 69-85. ISSN 0010-4485

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Hierarchical decomposition techniques are well established for the representation of 2D images, the calculation of distance maps, and the modelling of volume data. However, recent work has suggested that their use can be extended to the manufacture of physical objects for low cost prototyping and visualization. This paper details various decomposition and assembly planning routines created to support this process. Specifically the decomposition methods are described to generate octants appropriate for the physical assembly process. Having established methods for generating suitable octrees, three different algorithms for planning the assembly of octrees are presented. The comparative performance of these different approaches is discussed.