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arXiv 2403.07071cs.CV
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LISO:仅使用激光雷达的自监督3D目标检测

LISO: Lidar-only Self-Supervised 3D Object Detection

Mercedes-Benz(梅赛德斯-奔驰);University of Tübingen(蒂宾根大学);Tübingen AI Center(蒂宾根人工智能中心)

Stefan Baur, Frank Moosmann, Andreas Geiger

AI总结:

针对3D目标检测依赖昂贵人工标注的问题,提出仅用未标注激光雷达点云序列的轨迹正则化自训练方法LISO,借助自监督场景流网络生成优化伪真值,在多数据集多检测网络上验证了有效性。

摘要:

3D目标检测是任何自动驾驶技术栈中最重要的组成部分之一,但当前最先进(SOTA)的激光雷达目标检测器需要成本高昂且耗时的3D边界框人工标注才能取得良好性能。近年来,出现了几种无需人工监督即可生成伪真值的方法,但这些方法都存在各类缺陷:部分方法需要配备全摄像头覆盖且经过精准校准的传感器套件,部分还需辅以辅助光流引擎;另一些方法则需要昂贵的高精度定位系统,以查找在多次行驶中消失的目标。我们提出了一种新型自监督方法,用于训练最先进的激光雷达目标检测网络,该方法仅适用于未标注的激光雷达点云序列,我们称之为轨迹正则化自训练。该方法底层采用最先进的自监督激光雷达场景流网络,用于生成、跟踪并迭代优化伪真值。我们在多个真实世界数据集上,针对多个最先进的目标检测网络验证了该方法的有效性。代码将公开发布。

英文摘要:

3D object detection is one of the most important components in any Self-Driving stack, but current state-of-the-art (SOTA) lidar object detectors require costly & slow manual annotation of 3D bounding boxes to perform well. Recently, several methods emerged to generate pseudo ground truth without human supervision, however, all of these methods have various drawbacks: Some methods require sensor rigs with full camera coverage and accurate calibration, partly supplemented by an auxiliary optical flow engine. Others require expensive high-precision localization to find objects that disappeared over multiple drives. We introduce a novel self-supervised method to train SOTA lidar object detection networks which works on unlabeled sequences of lidar point clouds only, which we call trajectory-regularized self-training. It utilizes a SOTA self-supervised lidar scene flow network under the hood to generate, track, and iteratively refine pseudo ground truth. We demonstrate the effectiveness of our approach for multiple SOTA object detection networks across multiple real-world datasets. Code will be released.

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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