Block-based wavelet transform is applied to large-scale volume data, and effective octree structure is constructed to store significant wavelet coefficients map. The algorithm is not only a better compression ratio but it’s easy to random access block-based data.
通过对大规模体数据进行基于块的层次小波分解和构造有效的八叉树结构来保存小波重要系数位置信息,该算法不仅有较好的压缩率,而且很容易进行基于数据块的随机访问。
参考来源 - 面向网络的体绘制关键技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
采用八叉树结构，生成复杂外形绕流计算的非结构直角网格。
Unstructured Cartesian grid for complex geometries is generated based on Octree data structure.
在点对合并的过程中使用八叉树结构进行空间分解，使用贪婪算法来选择点对。
Meanwhile, space decomposition was implemented by eight-branch trees structure in the process of the merger of couple-point which was selected by greedy choice algorithm.
提出了动态八叉树结构和相应的自相似裂变递归算法，实现了虚拟环境下的可加工工件动态建模。
A dynamic 8-tree structure and a relative self-similar recursion algorithm are presented to model a dynamic workpiece object, which is machinable.
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