한국멀티미디어학회논문지 (Journal of Korea Multimedia Society)

  • 제13권12호
  • /
  • Pages.1748-1759
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  • 2010
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  • 1229-7771(pISSN)
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  • 2384-0102(eISSN)
한국멀티미디어학회 (Korea Multimedia Society)
권호 표지

S-Octree: An Extension to Spherical Coordinates

  • 투고 : 2010.08.18
  • 심사 : 2010.10.11
  • 발행 : 2010.12.30
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초록

We extend the octree subdivision process from Cartesian coordinates to spherical coordinates to develop more efficient space-partitioning structure for surface models. As an application of the proposed structure, we apply the octree subdivision in spherical coordinates ("S-Octree") to geometry compression in progressive mesh coding. Most previous researches on geometry-driven progressive mesh compression are devoted to improve predictability of geometry information. Unlike this, we focus on the efficient information storage for the space-partitioning structure. By eliminating void space at initial stage and aligning the R axis for the important components in geometry information, the S-Octree improves the efficiency in geometry information coding. Several meshes are tested in the progressive mesh coding based on the S-Octree and the results for performance parameters are presented.

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참고문헌

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