Reason3D: Searching and Reasoning 3D Segmentation via Large Language Model

• URL: http://arxiv.org/abs/2405.17427v2
• Date: Sun, 09 Feb 2025 07:32:21 GMT
• Title: Reason3D: Searching and Reasoning 3D Segmentation via Large Language Model
• Authors: Kuan-Chih Huang, Xiangtai Li, Lu Qi, Shuicheng Yan, Ming-Hsuan Yang,
• Abstract summary: Reason3D processes point cloud data and text prompts to produce textual responses and segmentation masks. We propose a hierarchical mask decoder that employs a coarse-to-fine approach to segment objects within expansive scenes.
• Score: 108.35777542298224
• License:
• Abstract: Recent advancements in multimodal large language models (LLMs) have demonstrated significant potential across various domains, particularly in concept reasoning. However, their applications in understanding 3D environments remain limited, primarily offering textual or numerical outputs without generating dense, informative segmentation masks. This paper introduces Reason3D, a novel LLM designed for comprehensive 3D understanding. Reason3D processes point cloud data and text prompts to produce textual responses and segmentation masks, enabling advanced tasks such as 3D reasoning segmentation, hierarchical searching, express referring, and question answering with detailed mask outputs. We propose a hierarchical mask decoder that employs a coarse-to-fine approach to segment objects within expansive scenes. It begins with a coarse location estimation, followed by object mask estimation, using two unique tokens predicted by LLMs based on the textual query. Experimental results on large-scale ScanNet and Matterport3D datasets validate the effectiveness of our Reason3D across various tasks.

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