Smart-Tree: Neural Medial Axis Approximation of Point Clouds for 3D Tree Skeletonization. (arXiv:2303.11560v2 [cs.CV] UPDATED)

This paper introduces Smart-Tree, a supervised method for approximating the
medial axes of branch skeletons from a tree point cloud. Smart-Tree uses a
sparse voxel convolutional neural network to extract the radius and direction
towards the medial axis of each input point. A greedy algorithm performs robust
skeletonization using the estimated medial axis. Our proposed method provides
robustness to complex tree structures and improves fidelity when dealing with
self-occlusions, complex geometry, touching branches, and varying point
densities. We evaluate Smart-Tree …

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