Efficient algorithms for real-time octree motion

Yoshifumi Kitamura, Andrew Smith, Fumio Kishino

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


This paper presents efficient algorithms for updating moving octrees with real-time performance. The first algorithm works for octrees undergoing both translation and rotation motion; it works efficiently by compacting source octrees into a smaller set of cubes (not necessarily standard octree cubes) as a precomputation step, and by using a fast, exact cube/cube intersection test between source octree cubes and target octree cubes. A parallel version of the algorithm is also described. Finally, the paper presents an efficient algorithm for the more limited case of octree translation only. Experimental results are given to show the efficiency of the algorithms in comparison to competing algorithms. In addition to being fast, the algorithms presented are also space efficient in that they can produce target octrees in the linear octree representation.

Original languageEnglish
Pages (from-to)1573-1580
Number of pages8
JournalIEICE Transactions on Information and Systems
Issue number12
Publication statusPublished - 1995 Dec
Externally publishedYes

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence


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