公开(公告)号：US5345490A

公开(公告)日：1994-09-06

申请号：US722989

申请日：1991-06-28

申请人： Peter M. Finnigan ,  William E. Lorensen ,  Alan F. Hathaway

发明人： Peter M. Finnigan ,  William E. Lorensen ,  Alan F. Hathaway

IPC分类号： G06T17/20 ,  G01N23/083 ,  G06F15/31

CPC分类号： G06T17/20 ,  Y10S378/901

摘要： A method and apparatus for converting computed tomography (CT) data into finite element models. The system generates both 2-D and 3-D models using the automatic mesh generators, QUADTREE and OCTREE, which are founded on recursive spatial decomposition. Multiple slices of CT data are obtained by scanning the object to be modeled. The slices are stacked and processed to form a discrete solid model. The discrete solid model is an alternate geometry defined discretely rather than with continuous analytic curves and surfaces but still provides a foundation for automatic mesh generation. Since the QUADTREE and OCTREE automatic mesh generators map naturally to the discrete solid model, the integration of CT technology and automatic mesh generation can be achieved.

摘要翻译： 一种用于将计算机断层摄影（CT）数据转换为有限元模型的方法和装置。 该系统使用基于递归空间分解的自动网格生成器QUADTREE和OCTREE生成二维和三维模型。 通过扫描要建模的对象获得多个CT数据。 将切片堆叠并处理以形成离散的实体模型。 离散实体模型是离散定义的替代几何，而不是连续的分析曲线和曲面，但仍然为自动网格生成提供了基础。 由于QUADTREE和OCTREE自动网格生成器自然映射到离散实体模型，可以实现CT技术和自动网格生成的集成。