Ambient Diffusion Omni: Training Good Models with Bad Data
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2025
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| author | Daras, Giannis Rodriguez-Munoz, Adrian Klivans, Adam Torralba, Antonio Daskalakis, Constantinos |
| author_facet | Daras, Giannis Rodriguez-Munoz, Adrian Klivans, Adam Torralba, Antonio Daskalakis, Constantinos |
| contents | We show how to use low-quality, synthetic, and out-of-distribution images to improve the quality of a diffusion model. Typically, diffusion models are trained on curated datasets that emerge from highly filtered data pools from the Web and other sources. We show that there is immense value in the lower-quality images that are often discarded. We present Ambient Diffusion Omni, a simple, principled framework to train diffusion models that can extract signal from all available images during training. Our framework exploits two properties of natural images -- spectral power law decay and locality. We first validate our framework by successfully training diffusion models with images synthetically corrupted by Gaussian blur, JPEG compression, and motion blur. We then use our framework to achieve state-of-the-art ImageNet FID, and we show significant improvements in both image quality and diversity for text-to-image generative modeling. The core insight is that noise dampens the initial skew between the desired high-quality distribution and the mixed distribution we actually observe. We provide rigorous theoretical justification for our approach by analyzing the trade-off between learning from biased data versus limited unbiased data across diffusion times. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_10038 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ambient Diffusion Omni: Training Good Models with Bad Data Daras, Giannis Rodriguez-Munoz, Adrian Klivans, Adam Torralba, Antonio Daskalakis, Constantinos Graphics Artificial Intelligence Machine Learning We show how to use low-quality, synthetic, and out-of-distribution images to improve the quality of a diffusion model. Typically, diffusion models are trained on curated datasets that emerge from highly filtered data pools from the Web and other sources. We show that there is immense value in the lower-quality images that are often discarded. We present Ambient Diffusion Omni, a simple, principled framework to train diffusion models that can extract signal from all available images during training. Our framework exploits two properties of natural images -- spectral power law decay and locality. We first validate our framework by successfully training diffusion models with images synthetically corrupted by Gaussian blur, JPEG compression, and motion blur. We then use our framework to achieve state-of-the-art ImageNet FID, and we show significant improvements in both image quality and diversity for text-to-image generative modeling. The core insight is that noise dampens the initial skew between the desired high-quality distribution and the mixed distribution we actually observe. We provide rigorous theoretical justification for our approach by analyzing the trade-off between learning from biased data versus limited unbiased data across diffusion times. |
| title | Ambient Diffusion Omni: Training Good Models with Bad Data |
| topic | Graphics Artificial Intelligence Machine Learning |
| url | https://arxiv.org/abs/2506.10038 |