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arXiv 2310.03360cs.CV
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CSI:提升3D点云识别对抗损坏的鲁棒性

CSI: Enhancing the Robustness of 3D Point Cloud Recognition against Corruption

Peking University(北京大学);University of Wisconsin, Madison(威斯康星大学麦迪逊分校);University of Michigan(密歇根大学)

Zhuoyuan Wu, Jiachen Sun, Chaowei Xiao

AI总结:

针对点云识别模型在数据损坏下泛化性不足的问题,提出结合密度感知采样与自熵最小化的关键子集识别方法CSI,显著提升了损坏基准上的识别鲁棒性。

摘要:

尽管深度神经网络在点云识别领域已取得诸多进展,但现实中安全关键型应用因不可避免的数据损坏面临挑战,现有模型往往难以泛化到未预见的分布偏移场景。本研究利用点云数据固有的集合属性,提出一种全新的关键子集识别(CSI)方法,旨在增强数据损坏场景下的识别鲁棒性。我们的CSI框架包含两个核心组件:分别对应静态与动态CSI的密度感知采样(DAS)和自熵最小化(SEM)。DAS通过考虑局部密度实现高效的鲁棒锚点采样,SEM则在训练过程中用于强化最显著的点间注意力。评估结果显示,我们的CSI方法在ModelNet40-C和PointCloud-C上的错误率分别为18.4%和16.3%,相较当前最优方法在两个基准上分别取得5.2%和4.2%的显著提升。代码可在https://github.com/masterwu2115/CSI/tree/main获取。

英文摘要:

Despite recent advancements in deep neural networks for point cloud recognition, real-world safety-critical applications present challenges due to unavoidable data corruption. Current models often fall short in generalizing to unforeseen distribution shifts. In this study, we harness the inherent set property of point cloud data to introduce a novel critical subset identification (CSI) method, aiming to bolster recognition robustness in the face of data corruption. Our CSI framework integrates two pivotal components: density-aware sampling (DAS) and self-entropy minimization (SEM), which cater to static and dynamic CSI, respectively. DAS ensures efficient robust anchor point sampling by factoring in local density, while SEM is employed during training to accentuate the most salient point-to-point attention. Evaluations reveal that our CSI approach yields error rates of 18.4\% and 16.3\% on ModelNet40-C and PointCloud-C, respectively, marking a notable improvement over state-of-the-art methods by margins of 5.2\% and 4.2\% on the respective benchmarks. Code is available at \href{https://github.com/masterwu2115/CSI/tree/main}{https://github.com/masterwu2115/CSI/tree/main}

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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