M3SunAgent: Monocular 3D Spatial Understanding Agent for Metric Depth Estimation and 3D Visual Grounding

arXiv:2610.07982 · cs.CV · Submitted 2026-10-06 · Read on arXiv

cs.CV

Submitted: 2026-10-06

Updated: 2026-10-06

Comments: 13 pages. 7 figures, submitted to IEEE Transactions on Circuits and Systems for Video Technology (TCSVT)

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Grounding — 1× in this paper · explained in 3 episodes
• Visual Grounding — 1× in this paper · explained in 2 episodes

Sources

• Qwen3-VL Technical Report
• Pixtral 12B
• InternVL3: Exploring Advanced Training and Test-Time Recipes for Open-Source Multimodal Models
• InternVL3.5: Advancing Open-Source Multimodal Models in Versatility, Reasoning, and Efficiency
• Qwen2.5-VL Technical Report
• Unlocking Dense Metric Depth Estimation in VLMs
• MiMo-VL Technical Report

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