Uni4D: Unifying Visual Foundation Models for 4D Modeling from a Single Video

• URL: http://arxiv.org/abs/2503.21761v1
• Date: Thu, 27 Mar 2025 17:57:32 GMT
• Title: Uni4D: Unifying Visual Foundation Models for 4D Modeling from a Single Video
• Authors: David Yifan Yao, Albert J. Zhai, Shenlong Wang,
• Abstract summary: We introduce Uni4D, a multi-stage optimization framework that harnesses multiple pretrained models to advance dynamic 3D modeling.<n>Results show state-of-the-art performance in dynamic 4D modeling with superior visual quality.
• Score: 12.283639677279645
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This paper presents a unified approach to understanding dynamic scenes from casual videos. Large pretrained vision foundation models, such as vision-language, video depth prediction, motion tracking, and segmentation models, offer promising capabilities. However, training a single model for comprehensive 4D understanding remains challenging. We introduce Uni4D, a multi-stage optimization framework that harnesses multiple pretrained models to advance dynamic 3D modeling, including static/dynamic reconstruction, camera pose estimation, and dense 3D motion tracking. Our results show state-of-the-art performance in dynamic 4D modeling with superior visual quality. Notably, Uni4D requires no retraining or fine-tuning, highlighting the effectiveness of repurposing visual foundation models for 4D understanding.

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