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    • 15. 发明申请
    • METHOD FOR ENCODING A MESH MODEL, ENCODED MESH MODEL AND METHOD FOR DECODING A MESH MODEL
    • 编码网格模型的方法,编码网格模型和解码网格模型的方法
    • US20140040215A1
    • 2014-02-06
    • US14111171
    • 2011-04-12
    • Kangying CaiJiang TianWei Liang Meng
    • Kangying CaiJiang TianWei Liang Meng
    • G06F17/30
    • G06F17/30371G06T9/005G06T9/40G06T17/005
    • Many 3D mesh models have a large number of small connected components that are repeated in various positions, scales and orientations. The respective positions are defined by the position of at least one reference point per component. For an enhanced encoding of the positions of the respective reference points, a given space is divided into segments and the number of points lying in each particular segment is determined. When a cell with at least n points is subdivided into child cells, an indication is added indicating if all points of a parent are in only one child cell. If so, the index of the only non-empty child node is encoded, while otherwise the number of points in one of the two child cells is decremented and encoded. The invention avoids non-effective subdivisions of a cell, and therefore improves the compression efficiency.
    • 许多3D网格模型具有大量的小型连接部件,可以在各种位置,尺度和方向上重复使用。 各个位置由每个组件至少一个参考点的位置定义。 对于各个参考点的位置的增强编码,给定空间被划分成段,并且确定位于每个特定段中的点的数量。 当具有至少n个点的小区被细分为子小区时,添加指示,指示父节点的所有点是否仅在一个子小区中。 如果是这样,唯一的非空子节点的索引被编码,否则两个子单元之一中的点的数量被递减并被编码。 本发明避免了电池的非有效细分,从而提高了压缩效率。