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    • 9. 发明申请
    • Alignment and comparison of free-form surfaces
    • 自由曲面的对准和比较
    • US20050021163A1
    • 2005-01-27
    • US10791723
    • 2004-03-04
    • Peihua GuYadong Li
    • Peihua GuYadong Li
    • G06F19/00G06T7/00
    • G06T7/33
    • A method is disclosed for the alignment of free-form surfaces having arbitrary initial positions. The method includes the steps of extracting surface information from two free-form surfaces to determine surface characteristics, partitioning surfaces into regions based on the surface characteristics, and comparing regions on the first free-form surface and the second free-form surface to determine corresponding regions, then these two surfaces are generally aligned. Next at least three pairs of corresponding points from the first and second free-form surfaces are determined from the corresponding regions, and the first and second free-form surfaces are localized to obtain a plurality of corresponding points. The difference between the points in each pair of corresponding points is then determined.
    • 公开了用于对准具有任意初始位置的自由曲面的方法。 该方法包括以下步骤:从两个自由曲面表面提取表面信息以确定表面特性,基于表面特征将表面分割成区域,以及比较第一自由曲面和第二自由曲面之间的区域,以确定相应的 区域,则这两个表面通常对齐。 接下来,从相应的区域确定来自第一和第二自由曲面的至少三对对应点,并且第一和第二自由曲面被定位以获得多个对应点。 然后确定每对对应点中的点之间的差异。