RCP: Recurrent Closest Point for Scene Flow Estimation on 3D Point Clouds. (arXiv:2205.11028v2 [cs.CV] UPDATED)

3D motion estimation including scene flow and point cloud registration has
drawn increasing interest. Inspired by 2D flow estimation, recent methods
employ deep neural networks to construct the cost volume for estimating
accurate 3D flow. However, these methods are limited by the fact that it is
difficult to define a search window on point clouds because of the irregular
data structure. In this paper, we avoid this irregularity by a simple yet
effective method.We decompose the problem into two interlaced …

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