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    • 5. 发明公开
    • METHOD FOR CONVERTING 3-DIMENSIONAL SHAPE DATA INTO CELL INNER DATA AND CONVERSION PROGRAM
    • VERFAHREN ZUM UMSETZEN DREIDMENSIONALER FORMDATEN IN ZELLEN-INNENDATEN UND UMSETZUNGSPROGRAMM
    • EP1452984A1
    • 2004-09-01
    • EP02786014.7
    • 2002-12-03
    • Riken
    • KASE, Kiwamu, RIKENTESHIMA, Yoshinori RIKENYAMAZAKI, Shuntaro RIKENUSAMI, Shugo, RIKENMAKINOUCHI, Akitake, RIKEN
    • G06F17/50
    • G06T17/005G06T17/10
    • A method of converting three-dimensional shape data into cell internal data. The method includes an oct-tree division step of dividing external data including boundary data of a target object into rectangular parallelepiped cells having boundary planes orthogonal to each other by oct-tree division. The method further includes a cell classification step of classifying each of the cells into an internal cell positioned inside or outside the target object or a boundary cell including the boundary data, and a cut point determination step of determining cut points of edges of the boundary cell based on the boundary data. The method further includes a boundary surface determination step of connecting cut points to form a polygon, and determining the polygon as the cell internal data when the number of the determined cut points is no fewer than 3 and no more than 12.
    • 将三维形状数据转换为单元内部数据的方法。 该方法包括:八进制分割步骤,其将包括目标对象的边界数据的外部数据划分为具有通过八叉树分割彼此正交的边界面的长方体。 该方法还包括:细胞分类步骤,将每个细胞分类为位于目标物体内部或外部的内部细胞,或包括边界数据的边界细胞;切割点确定步骤,确定边界细胞的边缘的切割点 基于边界数据。 该方法还包括一个边界表面确定步骤,用于连接切割点以形成多边形,并且当所确定的切割点的数量不小于3且不大于12时,确定多边形作为单元格内部数据。