MultiDiff: Consistent Novel View Synthesis from a Single Image

作者：Norman Müller, Katja Schwarz, Barbara Roessle, L. Porzi, S. R. Bulò, Matthias Nießner, P. Kontschieder · 发表于：Computer Vision and Pattern Recognition · 年份：2024 · DOI：10.1109/cvpr52733.2024.00977 · 被引用次数：75 · 研究领域：Computer Science

We introduce MultiDiff, a novel approach for consistent novel view synthesis of scenes from a single RGB image. The task of synthesizing novel views from a single reference image is highly ill-posed by nature, as there exist multiple, plausible explanations for unobserved areas. To address this issue, we incorporate strong priors in form of monocular depth predictors and video-diffusion models. Monocular depth enables us to condition our model on warped reference images for the target views, increasing geometric stability. The video-diffusion prior provides a strong proxy for 3D scenes, allowing the model to learn continuous and pixel-accurate correspondences across generated images. In contrast to approaches relying on autoregressive image generation that are prone to drifts and error accumulation, MultiDiff Jointly synthesizes a sequence of frames yielding high-quality and multi-view consistent results - even for long-term scene generation with large camera movements, while reducing inference time by an order of magnitude. For additional consistency and image quality improvements, we introduce a novel, structured noise distribution. Our experimental results demonstrate that MultiDiff outperforms state-of-the-art methods on the challenging, real-world datasets RealEstate10K and ScanNet. Finally, our model naturally supports multi-view consistent editing without the need for further tuning.