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Octree Representation and Its Applications in CAD

Tang Zesheng;   

  1. Department of Computer Science and Technology Tsinghua University; Beijing;
  • Online:1992-01-10 Published:1992-01-10

In this paper,a survey of octree representation and its applications in CAD is presented.The octree representation may be categorized as pure octree representation and polytree(or extended octree),and the latter is actually a boundary representation decomposed by octree.Linear octree which is a variant of regular octree representation has the advantage of saving memory space. The mapping between Cartesian coordinates and node addresses in linear octree is discussed.Then, algorithms for converting a boundary…

Key words: Web page classification,similarity measure,classifiction algorithm without noise;



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ISSN 1000-9000(Print)

         1860-4749(Online)
CN 11-2296/TP

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