期刊
2023 IEEE/CVF WINTER CONFERENCE ON APPLICATIONS OF COMPUTER VISION (WACV)
卷 -, 期 -, 页码 4730-4739出版社
IEEE COMPUTER SOC
DOI: 10.1109/WACV56688.2023.00472
关键词
-
So far, few researchers have studied the explainability of point cloud neural networks. Traditional activation maximization methods fail to generate human-perceptible global explanations for these networks. We propose new generative model-based activation maximization approaches to clearly outline the global explanations and improve their comprehensibility. Our experiments demonstrate that our approaches outperform regularization-based ones both qualitatively and quantitatively. This is the first work investigating the global explainability of point cloud networks.
So far, few researchers have targeted the explainability of point cloud neural networks. Part of the explainability methods are not directly applicable to those networks due to the structural specifics. In this work, we show that Activation Maximization (AM) with traditional pixel-wise regularizations fails to generate human-perceptible global explanations for point cloud networks. We propose new generative model-based AM approaches to clearly outline the global explanations and enhance their comprehensibility. Additionally, we propose a composite evaluation metric to address the limitations of existing evaluating methods, which simultaneously takes into account activation value, diversity and perceptibility. Extensive experiments demonstrate that our generative-based AM approaches outperform regularization-based ones both qualitatively and quantitatively. To the best of our knowledge, this is the first work investigating global explainability of point cloud networks. Our code is available at: https://github.com/Explain3D/PointCloudAM.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据