Non-Rigid Registration Under Isometric Deformations
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2. Overview
Correspondence Computation.
这部分讲matching过程不仅考虑最近点, 而且还要考虑feature最相似的点
3. Downsampled Representation
Features
算principle curvatures作为它的feature discriptor
这里它用的multi-level, 就是用不同的范围的点来模拟它的curvature, 对于每个sample点, 选出满足到它距离小于 d/(25-5j)的点, 然后再通过这些点的fitting of quadratic pathches 去算它的principal curvature.
5.1 算cluster, 注意s'为形变后的点, 这个点受到5.2里constraint的约束
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