Efficient-SID Enables Training-Free Megapixel Image Generation In Under One Second

📢📢📢We introduce Efficient-SID⚡️: training-free single-image diffusion model that generates images by sampling directly from an input image's patch distribution. Our method enables megapixel generation in <1s and scales to gigapixel generation. We also enable stylization, editing, and other applications. The outputs are constrained to follow exactly the patch distribution of the input — something that is very difficult to do with large models!

#CVPR2026 Highlight

🌐 https://haojunqiu.github.io/efficient-SID/ 📄 https://arxiv.org/abs/2606.04299

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