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arXiv 2512.24331cs.CV
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面向自动驾驶的空间感知视觉语言模型

Spatial-aware Vision Language Model for Autonomous Driving

Motional;University of Amsterdam(阿姆斯特丹大学)

Weijie Wei, Zhipeng Luo, Ling Feng, Venice Erin Liong

AI总结:

提出LVLDrive框架,通过融合LiDAR点云与视觉语言模型,利用渐进融合Q-Former和空间感知问答数据集,解决3D度量空间推理瓶颈,提升自动驾驶场景理解与决策可靠性。

摘要:

尽管视觉语言模型(VLM)通过利用语言模型中的常识在端到端自动驾驶中展现出显著前景,但它们依赖2D图像线索进行复杂场景理解和决策,这成为安全性和可靠性的关键瓶颈。当前基于图像的方法难以进行精确的度量空间推理和几何推断,导致不可靠的驾驶策略。为弥补这一差距,我们提出LVLDrive(LiDAR-视觉-语言),一种新颖框架,通过引入LiDAR点云作为额外输入模态,专门设计用于增强现有VLM的鲁棒3D度量空间理解能力。一个关键挑战在于如何减轻不同3D数据对预训练VLM带来的灾难性干扰。为此,我们引入渐进融合Q-Former,逐步注入LiDAR特征,确保VLM现有知识库的稳定性和保留。此外,我们开发了空间感知问答(SA-QA)数据集,明确教导模型高级3D感知和推理能力。在驾驶基准上的大量实验表明,与仅视觉的对应模型相比,LVLDrive在场景理解、度量空间感知和可靠驾驶决策方面均实现了优越性能。我们的工作强调了显式3D度量数据对于构建可信赖的基于VLM的自主系统的重要性。

英文摘要:

While Vision-Language Models (VLMs) show significant promise for end-to-end autonomous driving by leveraging the common sense embedded in language models, their reliance on 2D image cues for complex scene understanding and decision-making presents a critical bottleneck for safety and reliability. Current image-based methods struggle with accurate metric spatial reasoning and geometric inference, leading to unreliable driving policies. To bridge this gap, we propose LVLDrive (LiDAR-Vision-Language), a novel framework specifically designed to upgrade existing VLMs with robust 3D metric spatial understanding for autonomous driving by incoperating LiDAR point cloud as an extra input modality. A key challenge lies in mitigating the catastrophic disturbance introduced by disparate 3D data to the pre-trained VLMs. To this end, we introduce a Gradual Fusion Q-Former that incrementally injects LiDAR features, ensuring the stability and preservation of the VLM's existing knowledge base. Furthermore, we develop a spatial-aware question-answering (SA-QA) dataset to explicitly teach the model advanced 3D perception and reasoning capabilities. Extensive experiments on driving benchmarks demonstrate that LVLDrive achieves superior performance compared to vision-only counterparts across scene understanding, metric spatial perception, and reliable driving decision-making. Our work highlights the necessity of explicit 3D metric data for building trustworthy VLM-based autonomous systems.

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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