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arxiv: 2311.18651 · v1 · pith:MS6X6ADV · submitted 2023-11-30 · cs.CV

LL3DA: Visual Interactive Instruction Tuning for Omni-3D Understanding, Reasoning, and Planning

Sijin Chen , Xin Chen , Chi Zhang , Mingsheng Li , Gang Yu , Hao Fei , Hongyuan Zhu , Jiayuan Fan
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Tao Chen
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classification cs.CV
keywords helpll3dacloudcomprehendhoweverinteractionslargelmms
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Recent advances in Large Multimodal Models (LMM) have made it possible for various applications in human-machine interactions. However, developing LMMs that can comprehend, reason, and plan in complex and diverse 3D environments remains a challenging topic, especially considering the demand for understanding permutation-invariant point cloud 3D representations of the 3D scene. Existing works seek help from multi-view images, and project 2D features to 3D space as 3D scene representations. This, however, leads to huge computational overhead and performance degradation. In this paper, we present LL3DA, a Large Language 3D Assistant that takes point cloud as direct input and respond to both textual-instructions and visual-prompts. This help LMMs better comprehend human interactions and further help to remove the ambiguities in cluttered 3D scenes. Experiments show that LL3DA achieves remarkable results, and surpasses various 3D vision-language models on both 3D Dense Captioning and 3D Question Answering.

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