Buckets:
| # 旧版适配器 | |
| 这些方法仍然受到支持,尤其是在 Stable Diffusion 系列的检查点上。对于新的工作,建议优先使用 [LoRA](../tutorials/using_peft_for_inference)、[IP-Adapter](./ip_adapter) 和 [ControlNet](./controlnet)。 | |
| ## T2I-Adapter | |
| [T2I-Adapter](https://huggingface.co/papers/2302.08453) 是一种用于可控生成的适配器。它学习从控制信号(例如深度图或 Canny 边缘)到预训练模型内部特征的映射,并在生成过程中加入该引导。其作用类似于 [ControlNet](./controlnet),但它是一个更轻量级的即插即用适配器。 | |
| 加载一个受控适配器,然后使用 [from_pretrained()](/docs/diffusers/v0.43.0/zh/api/pipelines/overview#diffusers.DiffusionPipeline.from_pretrained) 加载流水线,并通过 `adapter=` 传入该适配器。 | |
| ```py | |
| import torch | |
| from diffusers import T2IAdapter, StableDiffusionXLAdapterPipeline, AutoencoderKL | |
| t2i_adapter = T2IAdapter.from_pretrained( | |
| "TencentARC/t2i-adapter-canny-sdxl-1.0", | |
| dtype=torch.float16, | |
| ) | |
| ``` | |
| 使用 [opencv-python](https://github.com/opencv/opencv-python) 生成 canny 图像。 | |
| ```py | |
| import cv2 | |
| import numpy as np | |
| from PIL import Image | |
| from diffusers.utils import load_image | |
| original_image = load_image( | |
| "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/non-enhanced-prompt.png" | |
| ) | |
| image = np.array(original_image) | |
| low_threshold = 100 | |
| high_threshold = 200 | |
| image = cv2.Canny(image, low_threshold, high_threshold) | |
| image = image[:, :, None] | |
| image = np.concatenate([image, image, image], axis=2) | |
| canny_image = Image.fromarray(image) | |
| ``` | |
| 将 canny 图像传入 pipeline 以生成图像。 | |
| ```py | |
| vae = AutoencoderKL.from_pretrained("madebyollin/sdxl-vae-fp16-fix", dtype=torch.float16) | |
| pipeline = StableDiffusionXLAdapterPipeline.from_pretrained( | |
| "stabilityai/stable-diffusion-xl-base-1.0", | |
| adapter=t2i_adapter, | |
| vae=vae, | |
| dtype=torch.float16, | |
| ).to("cuda") # or "mps", "xpu", "cpu" | |
| prompt = """ | |
| A photorealistic overhead image of a cat reclining sideways in a flamingo pool floatie holding a margarita. | |
| The cat is floating leisurely in the pool and completely relaxed and happy. | |
| """ | |
| pipeline( | |
| prompt, | |
| image=canny_image, | |
| num_inference_steps=100, | |
| guidance_scale=10, | |
| ).images[0] | |
| ``` | |
| 原始图像 | |
| canny 图像 | |
| 生成的图像 | |
| 另请参阅 [T2I-Adapter 训练](../training/t2i_adapters)。 | |
| ### MultiAdapter | |
| 使用 `MultiAdapter` 组合多个控制(例如 canny 和 depth)。将适配器列表传入 `MultiAdapter`,然后将对应的控制图像以列表形式传入 pipeline。 | |
| ```py | |
| import torch | |
| from diffusers.utils import load_image | |
| from diffusers import StableDiffusionXLAdapterPipeline, AutoencoderKL, MultiAdapter, T2IAdapter | |
| canny_image = load_image( | |
| "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/canny-cat.png" | |
| ) | |
| depth_image = load_image( | |
| "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/sdxl_depth_image.png" | |
| ) | |
| controls = [canny_image, depth_image] | |
| prompt = [""" | |
| a relaxed rabbit sitting on a striped towel next to a pool with a tropical drink nearby, | |
| bright sunny day, vacation scene, 35mm photograph, film, professional, 4k, highly detailed | |
| """] | |
| adapters = MultiAdapter( | |
| [ | |
| T2IAdapter.from_pretrained("TencentARC/t2i-adapter-canny-sdxl-1.0", dtype=torch.float16), | |
| T2IAdapter.from_pretrained("TencentARC/t2i-adapter-depth-midas-sdxl-1.0", dtype=torch.float16), | |
| ] | |
| ) | |
| ``` | |
| 将适配器、提示词和控制图像传入 [StableDiffusionXLAdapterPipeline](/docs/diffusers/v0.43.0/zh/api/pipelines/stable_diffusion/adapter#diffusers.StableDiffusionXLAdapterPipeline)。使用 `adapter_conditioning_scale` 参数来确定为每个控制分配多少权重。 | |
| ```py | |
| vae = AutoencoderKL.from_pretrained("madebyollin/sdxl-vae-fp16-fix", dtype=torch.float16) | |
| pipeline = StableDiffusionXLAdapterPipeline.from_pretrained( | |
| "stabilityai/stable-diffusion-xl-base-1.0", | |
| dtype=torch.float16, | |
| vae=vae, | |
| adapter=adapters, | |
| ).to("cuda") # or "mps", "xpu", "cpu" | |
| pipeline( | |
| prompt, | |
| image=controls, | |
| height=1024, | |
| width=1024, | |
| adapter_conditioning_scale=[0.7, 0.7] | |
| ).images[0] | |
| ``` | |
| canny 图像 | |
| 深度图 | |
| 生成的图像 | |
| ## 文本反转 | |
| [Textual Inversion](https://huggingface.co/papers/2208.01618) 通过微调绑定到唯一标记(`<sks>`)的词嵌入,使模型从 3-5 张图片中学习特定概念。之后,你可以在提示词中使用该标记来生成该概念(例如,像素艺术)。 | |
| Textual Inversion 权重通常只有几 KB,因为它们仅包含词嵌入。请在调用 [from_pretrained()](/docs/diffusers/v0.43.0/zh/api/pipelines/overview#diffusers.DiffusionPipeline.from_pretrained) 之后,使用 [load_textual_inversion()](/docs/diffusers/v0.43.0/zh/api/loaders/textual_inversion#diffusers.loaders.TextualInversionLoaderMixin.load_textual_inversion) 加载这些权重,并在提示词中包含该唯一标记以触发生成。 | |
| ```py | |
| import torch | |
| from diffusers import AutoPipelineForText2Image | |
| pipeline = AutoPipelineForText2Image.from_pretrained( | |
| "stable-diffusion-v1-5/stable-diffusion-v1-5", | |
| dtype=torch.float16 | |
| ).to("cuda") # or "mps", "xpu", "cpu" | |
| ``` | |
| ```py | |
| pipeline.load_textual_inversion("sd-concepts-library/gta5-artwork") | |
| prompt = "A cute brown bear eating a slice of pizza, stunning color scheme, masterpiece, illustration, <gta5-artwork> style" | |
| pipeline(prompt).images[0] | |
| ``` | |
| 要训练嵌入,请参阅 [训练文本反转](../training/text_inversion)。 | |
| Textual Inversion 还可以训练以学习*负向嵌入*,从而引导生成过程避开诸如“模糊”或“丑陋”等不良特征,有助于提升图像质量。 | |
| EasyNegative 是一种广泛使用的负向嵌入,其中包含多个学习到的负向概念。加载负向嵌入,并指定与负向嵌入关联的文件名和标记。将该标记传入管道中的 `negative_prompt` 以启用它。 | |
| ```py | |
| import torch | |
| from diffusers import AutoPipelineForText2Image | |
| pipeline = AutoPipelineForText2Image.from_pretrained( | |
| "stable-diffusion-v1-5/stable-diffusion-v1-5", | |
| dtype=torch.float16 | |
| ).to("cuda") # or "mps", "xpu", "cpu" | |
| pipeline.load_textual_inversion( | |
| "EvilEngine/easynegative", | |
| weight_name="easynegative.safetensors", | |
| token="easynegative" | |
| ) | |
| prompt = "A cute brown bear eating a slice of pizza, stunning color scheme, masterpiece, illustration" | |
| negative_prompt = "easynegative" | |
| pipeline(prompt, negative_prompt=negative_prompt).images[0] | |
| ``` | |
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