Fast Point Cloud Sampling Network

doi:10.1016/j.patrec.2022.11.006

Fast Point Cloud Sampling Network

2022-12-01

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DOI：10.1016/j.patrec.2022.11.006

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The increasing number of points in 3D point clouds has brought great challenges for subsequent algorithm efficiencies. Down-sampling algorithms are adopted to simplify the data and accelerate the computation. Except the well-known random sampling and farthest distance sampling, some recent works have tried to learn a sampling pattern according to the downstream task, which helps generate sampled points by fully-connected networks with fixed output point numbers. In this condition, a progress-net structure covering all resolutions sampling networks or multiple separate sampling networks for different resolutions are required, which is inconvenient. In this work, we propose a novel learning-based point cloud sampling framework, named Fast point cloud sampling network (FPN), which drives initial randomly sampled points to better positions instead of generating coordinates. FPN can be used to sample points clouds to any resolution once trained by changing the number of initial randomly sampled points. Results on point cloud reconstruction and recognition confirm that FPN can reach state-of-the-art performances with much higher sampling efficiency than most existing sampling methods. (c) 2022 Elsevier B.V. All rights reserved.

Keywords:

3D Point Cloud

Neural Network

Sampling

Fast Point Cloud Sampling Network

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