arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2209.08409cs.CVcs.RO
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基于神经辐射场的机器人主动三维重建不确定性引导策略

Uncertainty Guided Policy for Active Robotic 3D Reconstruction using Neural Radiance Fields

Oracle Labs(甲骨文实验室);ETH Zürich(苏黎世联邦理工学院);Huawei(华为)

Soomin Lee, Le Chen, Jiahao Wang, Alexander Liniger, Suryansh Kumar, Fisher Yu

摘要:

在本文中,我们解决的问题,主动机器人三维重建的对象。特别是,我们研究了如何移动机器人与手臂举行的摄像头可以选择一个有利的意见,以恢复对象的三维形状有效。与此问题的现有解决方案相反,我们利用流行的基于神经辐射场的对象表示,其最近在各种计算机视觉任务中显示出令人印象深刻的结果。然而,使用这种表示直接推理对象的显式3D几何细节并不简单,这使得密集3D重建的下一个最佳视图选择问题具有挑战性。本文介绍了一种基于射线的体积不确定性估计器,它计算沿着对象的隐式神经表示的每条射线的颜色样本的权重分布的熵。我们表明,它是可能的,以推断潜在的3D几何形状的不确定性,给出了一个新的观点与建议的估计。然后,我们提出了一个下一个最佳视图选择策略指导下的射线为基础的体积不确定性神经辐射场为基础的表示。令人鼓舞的实验结果的合成和真实世界的数据表明,本文提出的方法可以使一个新的研究方向,使用隐式的3D对象表示的下一个最佳视图的问题,在机器人视觉应用,区分我们的方法从现有的方法,依赖于显式的3D几何建模。

英文摘要:

In this paper, we tackle the problem of active robotic 3D reconstruction of an object. In particular, we study how a mobile robot with an arm-held camera can select a favorable number of views to recover an object's 3D shape efficiently. Contrary to the existing solution to this problem, we leverage the popular neural radiance fields-based object representation, which has recently shown impressive results for various computer vision tasks. However, it is not straightforward to directly reason about an object's explicit 3D geometric details using such a representation, making the next-best-view selection problem for dense 3D reconstruction challenging. This paper introduces a ray-based volumetric uncertainty estimator, which computes the entropy of the weight distribution of the color samples along each ray of the object's implicit neural representation. We show that it is possible to infer the uncertainty of the underlying 3D geometry given a novel view with the proposed estimator. We then present a next-best-view selection policy guided by the ray-based volumetric uncertainty in neural radiance fields-based representations. Encouraging experimental results on synthetic and real-world data suggest that the approach presented in this paper can enable a new research direction of using an implicit 3D object representation for the next-best-view problem in robot vision applications, distinguishing our approach from the existing approaches that rely on explicit 3D geometric modeling.

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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