计算机工程 ›› 2007, Vol. 33 ›› Issue (14): 33-35,7.doi: 10.3969/j.issn.1000-3428.2007.14.011

• 软件技术与数据库 • 上一篇    下一篇

基于分块混合八叉树编码的海量体视化研究

张传明,潘 懋,徐绘宏   

  1. (北京大学地球与空间科学学院,北京 100871)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-07-20 发布日期:2007-07-20

Hybrid Blocking Octree-based Mass Volume Rendering

ZHANG Chuanming, PAN Mao, XU Huihong

  

  1. (School of Earth and Space Sciences, Peking University, Beijing 100871)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-07-20 Published:2007-07-20

摘要: 在介绍当前体数据的数据模型与绘制方法的基础上,使用混合八叉树进行体数据的描述,实现了对其自适应分块存储。并用体元投射和三维纹理映射方法分别实现了混合八叉树的体绘制与多分辨率绘制。实验结果表明,该文的算法较好地实现了基于混合八叉树结构的海量体数据的组织、存储和绘制。

关键词: 混合八叉树, 分块, 三维纹理映射, 体元投射

Abstract: Based on the introduction of common data models and rendering algorithms for volume data, this paper proposes a hybrid octree encoding to describe it. Self-adaptive blocking method is applied to store and manage mass volume data. Volume rendering and multi-resolution rendering for hybrid octree via cell projection and 3D-texture mapping are implemented. Experimental results show that the algorithms effectively solve storage, management and rendering for hybrid octree based mass volume data.

Key words: hybrid octree, blocking, 3d-texture mapping, cell projection

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