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| license: apache-2.0 |
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| GLIDE: Towards Photorealistic Image Generation and Editing with Text-Guided Diffusion Models |
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| **Paper**: [GLIDE: Towards Photorealistic Image Generation and Editing with Text-Guided Diffusion Models](https://arxiv.org/abs/2112.10741) |
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| **Abstract**: |
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| *Diffusion models have recently been shown to generate high-quality synthetic images, especially when paired with a guidance technique to trade off diversity for fidelity. We explore diffusion models for the problem of text-conditional image synthesis and compare two different guidance strategies: CLIP guidance and classifier-free guidance. We find that the latter is preferred by human evaluators for both photorealism and caption similarity, and often produces photorealistic samples. Samples from a 3.5 billion parameter text-conditional diffusion model using classifier-free guidance are favored by human evaluators to those from DALL-E, even when the latter uses expensive CLIP reranking. Additionally, we find that our models can be fine-tuned to perform image inpainting, enabling powerful text-driven image editing.* |
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| ## Usage |
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| ```python |
| # !pip install diffusers |
| import torch |
| from diffusers import DiffusionPipeline |
| import PIL.Image |
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| model_id = "fusing/glide-base" |
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| # load model and scheduler |
| pipeline = DiffusionPipeline.from_pretrained(model_id) |
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| # run inference (text-conditioned denoising + upscaling) |
| img = pipeline("a crayon drawing of a corgi") |
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| # process image to PIL |
| img = img.squeeze(0) |
| img = ((img + 1)*127.5).round().clamp(0, 255).to(torch.uint8).cpu().numpy() |
| image_pil = PIL.Image.fromarray(img) |
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| # save image |
| image_pil.save("test.png") |
| ``` |
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| ## Samples |
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