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Parametrization for surface fitting in reverse engineering

机译:逆向工程中曲面拟合的参数化

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摘要

Given four boundary curves and a set of random points lying on a surface patch, a method for assigning parameters to these points is presented The algorithm uses various base surfaces to project the points onto these surfaces to recover the parameters based on the surfaces' underlying parametrization. Several techniques for speeding up the time consuming projection process are also presented. A thinning method is introduced as well to select a subset of the points that may have been sampled at a much higher rate than necessary. The thinning is based on the geometry of the base surface and relies on a meaningful geometric tolerance.
机译:在给定四个边界曲线和位于曲面补丁上的一组随机点的情况下,提出了一种为这些点分配参数的方法。该算法使用各种基础曲面将点投影到这些曲面上,以基于曲面的基础参数化来恢复参数。还提出了几种加快耗时的投影过程的技术。还引入了稀疏方法以选择点的子集,这些子集的采样率可能比所需的采样率高得多。变薄基于基础表面的几何形状,并取决于有意义的几何公差。

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