Defense-PointNet: Protecting PointNet Against Adversarial Attacks

• URL: http://arxiv.org/abs/2002.11881v1
• Date: Thu, 27 Feb 2020 02:35:08 GMT
• Title: Defense-PointNet: Protecting PointNet Against Adversarial Attacks
• Authors: Yu Zhang, Gongbo Liang, Tawfiq Salem, Nathan Jacobs
• Abstract summary: We propose Defense-PointNet to minimize the vulnerability of PointNet to adversarial attacks. We show that Defense-PointNet significantly improves the robustness of the network against adversarial samples.
• Score: 19.814951750594574
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Despite remarkable performance across a broad range of tasks, neural networks have been shown to be vulnerable to adversarial attacks. Many works focus on adversarial attacks and defenses on 2D images, but few focus on 3D point clouds. In this paper, our goal is to enhance the adversarial robustness of PointNet, which is one of the most widely used models for 3D point clouds. We apply the fast gradient sign attack method (FGSM) on 3D point clouds and find that FGSM can be used to generate not only adversarial images but also adversarial point clouds. To minimize the vulnerability of PointNet to adversarial attacks, we propose Defense-PointNet. We compare our model with two baseline approaches and show that Defense-PointNet significantly improves the robustness of the network against adversarial samples.

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