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arXiv 2409.13675cs.RO
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OLiVia-Nav: 一种面向移动机器人社交导航的在线终身视觉语言方法

OLiVia-Nav: An Online Lifelong Vision Language Approach for Mobile Robot Social Navigation

University of Toronto(多伦多大学)

Siddarth Narasimhan, Aaron Hao Tan, Daniel Choi, Goldie Nejat

AI总结:

OLiVia-Nav通过融合视觉语言模型与在线终身学习框架,实现机器人社交导航中的社会规范适应与动态轨迹规划,优于现有方法。

摘要:

服务机器人在医院、办公楼和长期护理机构等人类中心环境中,需要遵守社会规范以确保与共享空间的人的安全和舒适。此外,机器人还需适应导航过程中可能出现的新社交场景。本文提出了一种新颖的在线终身视觉语言架构OLiVia-Nav,将视觉语言模型(VLMs)与在线终身学习框架结合,用于机器人社交导航。我们引入了一种独特的蒸馏方法,即社会情境对比语言图像预训练(SC-CLIP),以将大型VLMs的社会推理能力转移到轻量级VLM中,使OLiVia-Nav在机器人导航过程中直接编码社会和环境上下文。这些编码的嵌入式向量用于生成和选择机器人社交合规轨迹。SC-CLIP的终身学习能力使OLiVia-Nav能够随新社交场景的出现而更新机器人轨迹规划。我们进行了广泛的现实世界实验,在多样的社交导航场景中测试。结果表明,OLiVia-Nav在均方误差、Hausdorff损失和个人空间侵犯持续时间方面优于现有的最先进的DRL和VLM方法。消融研究也验证了OLiVia-Nav的设计选择。

英文摘要:

Service robots in human-centered environments such as hospitals, office buildings, and long-term care homes need to navigate while adhering to social norms to ensure the safety and comfortability of the people they are sharing the space with. Furthermore, they need to adapt to new social scenarios that can arise during robot navigation. In this paper, we present a novel Online Lifelong Vision Language architecture, OLiVia- Nav, which uniquely integrates vision-language models (VLMs) with an online lifelong learning framework for robot social navigation. We introduce a unique distillation approach, Social Context Contrastive Language Image Pre-training (SC-CLIP), to transfer the social reasoning capabilities of large VLMs to a lightweight VLM, in order for OLiVia-Nav to directly encode social and environment context during robot navigation. These encoded embeddings are used to generate and select robot social compliant trajectories. The lifelong learning capabilities of SC-CLIP enable OLiVia-Nav to update the robot trajectory planning overtime as new social scenarios are encountered. We conducted extensive real-world experiments in diverse social navigation scenarios. The results showed that OLiVia-Nav outperformed existing state-of-the-art DRL and VLM methods in terms of mean squared error, Hausdorff loss, and personal space violation duration. Ablation studies also verified the design choices for OLiVia-Nav.

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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