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arXiv 2209.14435cs.CVcs.AIcs.LGcs.ROeess.IV
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用于LiDAR-based三维目标检测的分布外检测

Out-of-Distribution Detection for LiDAR-based 3D Object Detection

Chengjie Huang, Van Duong Nguyen, Vahdat Abdelzad, Christopher Gus Mannes, Luke Rowe, Benjamin Therien, Rick Salay, Krzysztof Czarnecki

摘要:

3D目标检测是自动驾驶的重要组成部分,深度神经网络(DNN)在这一任务上已经达到了最先进的性能。然而,深度模型因向分布外(OOD)输入(即不是从训练分布中提取的输入)分配高置信度得分而臭名昭著。检测OOD输入是一个挑战,对于模型的安全部署是必不可少的。OOD检测已经被广泛研究用于分类任务,但是对于目标检测任务,特别是基于LiDAR的3D目标检测,它还没有得到足够的关注。在本文中,我们专注于基于激光雷达的3D目标检测的OOD输入的检测。我们制定了什么OOD输入意味着目标检测,并提出适应几个OOD检测方法的目标检测。我们完成了我们提出的特征提取方法。为了评估OOD检测方法,我们开发了一种简单而有效的技术,为给定的目标检测模型生成OOD对象。基于KITTI数据集的评估表明,不同的OOD检测方法对检测特定的OOD对象有偏见。强调了组合OOD检测方法的重要性,以及在这一方向的进一步研究。

英文摘要:

3D object detection is an essential part of automated driving, and deep neural networks (DNNs) have achieved state-of-the-art performance for this task. However, deep models are notorious for assigning high confidence scores to out-of-distribution (OOD) inputs, that is, inputs that are not drawn from the training distribution. Detecting OOD inputs is challenging and essential for the safe deployment of models. OOD detection has been studied extensively for the classification task, but it has not received enough attention for the object detection task, specifically LiDAR-based 3D object detection. In this paper, we focus on the detection of OOD inputs for LiDAR-based 3D object detection. We formulate what OOD inputs mean for object detection and propose to adapt several OOD detection methods for object detection. We accomplish this by our proposed feature extraction method. To evaluate OOD detection methods, we develop a simple but effective technique of generating OOD objects for a given object detection model. Our evaluation based on the KITTI dataset shows that different OOD detection methods have biases toward detecting specific OOD objects. It emphasizes the importance of combined OOD detection methods and more research in this direction.

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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