Self-supervised adversarial masking for 3D point cloud representation learning

• URL: http://arxiv.org/abs/2307.05325v1
• Date: Tue, 11 Jul 2023 15:11:06 GMT
• Title: Self-supervised adversarial masking for 3D point cloud representation learning
• Authors: Micha{\l} Szachniewicz, Wojciech Koz{\l}owski, Micha{\l} Stypu{\l}kowski and Maciej Zi\k{e}ba
• Abstract summary: We introduce PointCAM, a novel adversarial method for learning a masking function for point clouds. Compared to previous techniques, we postulate applying an auxiliary network that learns how to select masks instead of choosing them randomly. Our results show that the learned masking function achieves state-of-the-art or competitive performance on various downstream tasks.
• Score: 0.38233569758620056
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Self-supervised methods have been proven effective for learning deep representations of 3D point cloud data. Although recent methods in this domain often rely on random masking of inputs, the results of this approach can be improved. We introduce PointCAM, a novel adversarial method for learning a masking function for point clouds. Our model utilizes a self-distillation framework with an online tokenizer for 3D point clouds. Compared to previous techniques that optimize patch-level and object-level objectives, we postulate applying an auxiliary network that learns how to select masks instead of choosing them randomly. Our results show that the learned masking function achieves state-of-the-art or competitive performance on various downstream tasks. The source code is available at https://github.com/szacho/pointcam.

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