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arXiv · 2501.13928

Fast3R: Towards 3D Reconstruction of 1000+ Images in One Forward Pass

Jianing Yang·Alexander Sax·Kevin J. Liang·Mikael Henaff·Hao Tang·Ang Cao·Joyce Chai·Franziska Meier·Matt Feiszli
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Abstract

Multi-view 3D reconstruction remains a core challenge in computer vision, particularly in applications requiring accurate and scalable representations across diverse perspectives. Current leading methods such as DUSt3R employ a fundamentally pairwise approach, processing images in pairs and necessitating costly global alignment procedures to reconstruct from multiple views. In this work, we propose Fast 3D Reconstruction (Fast3R), a novel multi-view generalization to DUSt3R that achieves efficient and scalable 3D reconstruction by processing many views in parallel. Fast3R's Transformer-based architecture forwards N images in a single forward pass, bypassing the need for iterative alignment. Through extensive experiments on camera pose estimation and 3D reconstruction, Fast3R demonstrates state-of-the-art performance, with significant improvements in inference speed and reduced error accumulation. These results establish Fast3R as a robust alternative for multi-view applications, offering enhanced scalability without compromising reconstruction accuracy.

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Jianing Yang, Alexander Sax, Kevin J. Liang, Mikael Henaff, Hao Tang, Ang Cao, Joyce Chai, Franziska Meier, Matt Feiszli. 2025-01-23. Fast3R: Towards 3D Reconstruction of 1000+ Images in One Forward Pass. https://arxiv.org/abs/2501.13928

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