VisualCloze (original) (raw)

VisualCloze: A Universal Image Generation Framework via Visual In-Context Learning is an innovative in-context learning based universal image generation framework that offers key capabilities:

1. Support for various in-domain tasks
2. Generalization to unseen tasks through in-context learning
3. Unify multiple tasks into one step and generate both target image and intermediate results
4. Support reverse-engineering conditions from target images

Overview

The abstract from the paper is:

Recent progress in diffusion models significantly advances various image generation tasks. However, the current mainstream approach remains focused on building task-specific models, which have limited efficiency when supporting a wide range of different needs. While universal models attempt to address this limitation, they face critical challenges, including generalizable task instruction, appropriate task distributions, and unified architectural design. To tackle these challenges, we propose VisualCloze, a universal image generation framework, which supports a wide range of in-domain tasks, generalization to unseen ones, unseen unification of multiple tasks, and reverse generation. Unlike existing methods that rely on language-based task instruction, leading to task ambiguity and weak generalization, we integrate visual in-context learning, allowing models to identify tasks from visual demonstrations. Meanwhile, the inherent sparsity of visual task distributions hampers the learning of transferable knowledge across tasks. To this end, we introduce Graph200K, a graph-structured dataset that establishes various interrelated tasks, enhancing task density and transferable knowledge. Furthermore, we uncover that our unified image generation formulation shared a consistent objective with image infilling, enabling us to leverage the strong generative priors of pre-trained infilling models without modifying the architectures. The codes, dataset, and models are available at https://visualcloze.github.io.

Inference

Model loading

VisualCloze is a two-stage cascade pipeline, containing VisualClozeGenerationPipeline and VisualClozeUpsamplingPipeline.

• In VisualClozeGenerationPipeline, each image is downsampled before concatenating images into a grid layout, avoiding excessively high resolutions. VisualCloze releases two models suitable for diffusers, i.e., VisualClozePipeline-384 and VisualClozePipeline-512, which downsample images to resolutions of 384 and 512, respectively.
• VisualClozeUpsamplingPipeline uses SDEdit to enable high-resolution image synthesis.

The VisualClozePipeline integrates both stages to support convenient end-to-end sampling, while also allowing users to utilize each pipeline independently as needed.

Input Specifications

Task and Content Prompts

• Task prompt: Required to describe the generation task intention
• Content prompt: Optional description or caption of the target image
• When content prompt is not needed, pass None
• For batch inference, pass List[str|None]

Image Input Format

• Format: List[List[Image|None]]
• Structure:
  • All rows except the last represent in-context examples
  • Last row represents the current query (target image set to None)
• For batch inference, pass List[List[List[Image|None]]]

Resolution Control

• Default behavior:
  • Initial generation in the first stage: area of pipe.resolution2{pipe.resolution}^2
  • Upsampling in the second stage: 3x factor
• Custom resolution: Adjust using upsampling_height and upsampling_width parameters

Examples

For comprehensive examples covering a wide range of tasks, please refer to the Online Demo and GitHub Repository. Below are simple examples for three cases: mask-to-image conversion, edge detection, and subject-driven generation.

Example for mask2image

import torch from diffusers import VisualClozePipeline from diffusers.utils import load_image

pipe = VisualClozePipeline.from_pretrained("VisualCloze/VisualClozePipeline-384", resolution=384, torch_dtype=torch.bfloat16) pipe.to("cuda")

image_paths = [

[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_mask.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_image.jpg'),
],

[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_query_mask.jpg'),
    None, 
],

]

task_prompt = "In each row, a logical task is demonstrated to achieve [IMAGE2] an aesthetically pleasing photograph based on [IMAGE1] sam 2-generated masks with rich color coding." content_prompt = """Majestic photo of a golden eagle perched on a rocky outcrop in a mountainous landscape. The eagle is positioned in the right foreground, facing left, with its sharp beak and keen eyes prominently visible. Its plumage is a mix of dark brown and golden hues, with intricate feather details. The background features a soft-focus view of snow-capped mountains under a cloudy sky, creating a serene and grandiose atmosphere. The foreground includes rugged rocks and patches of green moss. Photorealistic, medium depth of field, soft natural lighting, cool color palette, high contrast, sharp focus on the eagle, blurred background, tranquil, majestic, wildlife photography."""

image_result = pipe( task_prompt=task_prompt, content_prompt=content_prompt, image=image_paths, upsampling_width=1344, upsampling_height=768, upsampling_strength=0.4, guidance_scale=30, num_inference_steps=30, max_sequence_length=512, generator=torch.Generator("cpu").manual_seed(0) ).images[0][0]

image_result.save("visualcloze.png")

Example for edge-detection

import torch from diffusers import VisualClozePipeline from diffusers.utils import load_image

pipe = VisualClozePipeline.from_pretrained("VisualCloze/VisualClozePipeline-384", resolution=384, torch_dtype=torch.bfloat16) pipe.to("cuda")

image_paths = [

[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_edgedetection_incontext-example-1_image.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_edgedetection_incontext-example-1_edge.jpg'),
],
[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_edgedetection_incontext-example-2_image.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_edgedetection_incontext-example-2_edge.jpg'),
],

[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_edgedetection_query_image.jpg'),
    None, 
],

]

task_prompt = "Each row illustrates a pathway from [IMAGE1] a sharp and beautifully composed photograph to [IMAGE2] edge map with natural well-connected outlines using a clear logical task." content_prompt = ""

image_result = pipe( task_prompt=task_prompt, content_prompt=content_prompt, image=image_paths, upsampling_width=864, upsampling_height=1152, upsampling_strength=0.4, guidance_scale=30, num_inference_steps=30, max_sequence_length=512, generator=torch.Generator("cpu").manual_seed(0) ).images[0][0]

image_result.save("visualcloze.png")

Example for subject-driven generation

import torch from diffusers import VisualClozePipeline from diffusers.utils import load_image

pipe = VisualClozePipeline.from_pretrained("VisualCloze/VisualClozePipeline-384", resolution=384, torch_dtype=torch.bfloat16) pipe.to("cuda")

image_paths = [

[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_incontext-example-1_reference.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_incontext-example-1_depth.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_incontext-example-1_image.jpg'),
],
[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_incontext-example-2_reference.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_incontext-example-2_depth.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_incontext-example-2_image.jpg'),
],

[
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_query_reference.jpg'),
    load_image('https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_subjectdriven_query_depth.jpg'),
    None, 
],

]

task_prompt = """Each row describes a process that begins with [IMAGE1] an image containing the key object, [IMAGE2] depth map revealing gray-toned spatial layers and results in [IMAGE3] an image with artistic qualitya high-quality image with exceptional detail.""" content_prompt = """A vintage porcelain collector's item. Beneath a blossoming cherry tree in early spring, this treasure is photographed up close, with soft pink petals drifting through the air and vibrant blossoms framing the scene."""

image_result = pipe( task_prompt=task_prompt, content_prompt=content_prompt, image=image_paths, upsampling_width=1024, upsampling_height=1024, upsampling_strength=0.2, guidance_scale=30, num_inference_steps=30, max_sequence_length=512, generator=torch.Generator("cpu").manual_seed(0) ).images[0][0]

image_result.save("visualcloze.png")

Utilize each pipeline independently

import torch from diffusers import VisualClozeGenerationPipeline, FluxFillPipeline as VisualClozeUpsamplingPipeline from diffusers.utils import load_image from PIL import Image

pipe = VisualClozeGenerationPipeline.from_pretrained( "VisualCloze/VisualClozePipeline-384", resolution=384, torch_dtype=torch.bfloat16 ) pipe.to("cuda")

image_paths = [

[
    load_image(
        "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_mask.jpg"
    ),
    load_image(
        "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_image.jpg"
    ),
],

[
    load_image(
        "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_query_mask.jpg"
    ),
    None,  
],

] task_prompt = "In each row, a logical task is demonstrated to achieve [IMAGE2] an aesthetically pleasing photograph based on [IMAGE1] sam 2-generated masks with rich color coding." content_prompt = "Majestic photo of a golden eagle perched on a rocky outcrop in a mountainous landscape. The eagle is positioned in the right foreground, facing left, with its sharp beak and keen eyes prominently visible. Its plumage is a mix of dark brown and golden hues, with intricate feather details. The background features a soft-focus view of snow-capped mountains under a cloudy sky, creating a serene and grandiose atmosphere. The foreground includes rugged rocks and patches of green moss. Photorealistic, medium depth of field, soft natural lighting, cool color palette, high contrast, sharp focus on the eagle, blurred background, tranquil, majestic, wildlife photography."

image = pipe( task_prompt=task_prompt, content_prompt=content_prompt, image=image_paths, guidance_scale=30, num_inference_steps=30, max_sequence_length=512, generator=torch.Generator("cpu").manual_seed(0), ).images[0][0]

pipe_upsample = VisualClozeUpsamplingPipeline.from_pipe(pipe) pipe_upsample.to("cuda")

mask_image = Image.new("RGB", image.size, (255, 255, 255))

image = pipe_upsample( image=image, mask_image=mask_image, prompt=content_prompt, width=1344, height=768, strength=0.4, guidance_scale=30, num_inference_steps=30, max_sequence_length=512, generator=torch.Generator("cpu").manual_seed(0), ).images[0]

image.save("visualcloze.png")

VisualClozePipeline

class diffusers.VisualClozePipeline

< source >

( scheduler: FlowMatchEulerDiscreteScheduler vae: AutoencoderKL text_encoder: CLIPTextModel tokenizer: CLIPTokenizer text_encoder_2: T5EncoderModel tokenizer_2: T5TokenizerFast transformer: FluxTransformer2DModel resolution: int = 384 )

Parameters

• transformer (FluxTransformer2DModel) — Conditional Transformer (MMDiT) architecture to denoise the encoded image latents.
• scheduler (FlowMatchEulerDiscreteScheduler) — A scheduler to be used in combination with transformer to denoise the encoded image latents.
• vae (AutoencoderKL) — Variational Auto-Encoder (VAE) Model to encode and decode images to and from latent representations.
• text_encoder (CLIPTextModel) —CLIP, specifically the clip-vit-large-patch14 variant.
• text_encoder_2 (T5EncoderModel) —T5, specifically the google/t5-v1_1-xxl variant.
• tokenizer (CLIPTokenizer) — Tokenizer of classCLIPTokenizer.
• tokenizer_2 (T5TokenizerFast) — Second Tokenizer of classT5TokenizerFast.
• resolution (int, optional, defaults to 384) — The resolution of each image when concatenating images from the query and in-context examples.

The VisualCloze pipeline for image generation with visual context. Reference:https://github.com/lzyhha/VisualCloze/tree/main. This pipeline is designed to generate images based on visual in-context examples.

__call__

< source >

( task_prompt: typing.Union[str, typing.List[str]] = None content_prompt: typing.Union[str, typing.List[str]] = None image: typing.Optional[torch.FloatTensor] = None upsampling_height: typing.Optional[int] = None upsampling_width: typing.Optional[int] = None num_inference_steps: int = 50 sigmas: typing.Optional[typing.List[float]] = None guidance_scale: float = 30.0 num_images_per_prompt: typing.Optional[int] = 1 generator: typing.Union[torch._C.Generator, typing.List[torch._C.Generator], NoneType] = None latents: typing.Optional[torch.FloatTensor] = None prompt_embeds: typing.Optional[torch.FloatTensor] = None pooled_prompt_embeds: typing.Optional[torch.FloatTensor] = None output_type: typing.Optional[str] = 'pil' return_dict: bool = True joint_attention_kwargs: typing.Optional[typing.Dict[str, typing.Any]] = None callback_on_step_end: typing.Optional[typing.Callable[[int, int, typing.Dict], NoneType]] = None callback_on_step_end_tensor_inputs: typing.List[str] = ['latents'] max_sequence_length: int = 512 upsampling_strength: float = 1.0 ) → ~pipelines.flux.FluxPipelineOutput or tuple

Parameters

• task_prompt (str or List[str], optional) — The prompt or prompts to define the task intention.
• content_prompt (str or List[str], optional) — The prompt or prompts to define the content or caption of the target image to be generated.
• image (torch.Tensor, PIL.Image.Image, np.ndarray, List[torch.Tensor], List[PIL.Image.Image], or List[np.ndarray]) —Image, numpy array or tensor representing an image batch to be used as the starting point. For both numpy array and pytorch tensor, the expected value range is between [0, 1] If it’s a tensor or a list or tensors, the expected shape should be (B, C, H, W) or (C, H, W). If it is a numpy array or a list of arrays, the expected shape should be (B, H, W, C) or (H, W, C).
• upsampling_height (int, optional, defaults to self.unet.config.sample_size * self.vae_scale_factor) — The height in pixels of the generated image (i.e., output image) after upsampling via SDEdit. By default, the image is upsampled by a factor of three, and the base resolution is determined by the resolution parameter of the pipeline. When only one of upsampling_height or upsampling_width is specified, the other will be automatically set based on the aspect ratio.
• upsampling_width (int, optional, defaults to self.unet.config.sample_size * self.vae_scale_factor) — The width in pixels of the generated image (i.e., output image) after upsampling via SDEdit. By default, the image is upsampled by a factor of three, and the base resolution is determined by the resolution parameter of the pipeline. When only one of upsampling_height or upsampling_width is specified, the other will be automatically set based on the aspect ratio.
• num_inference_steps (int, optional, defaults to 50) — The number of denoising steps. More denoising steps usually lead to a higher quality image at the expense of slower inference.
• sigmas (List[float], optional) — Custom sigmas to use for the denoising process with schedulers which support a sigmas argument in their set_timesteps method. If not defined, the default behavior when num_inference_steps is passed will be used.
• guidance_scale (float, optional, defaults to 30.0) — Guidance scale as defined in Classifier-Free Diffusion Guidance. guidance_scale is defined as w of equation 2. of Imagen Paper. Guidance scale is enabled by settingguidance_scale > 1. Higher guidance scale encourages to generate images that are closely linked to the text prompt, usually at the expense of lower image quality.
• num_images_per_prompt (int, optional, defaults to 1) — The number of images to generate per prompt.
• generator (torch.Generator or List[torch.Generator], optional) — One or a list of torch generator(s)to make generation deterministic.
• latents (torch.FloatTensor, optional) — Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image generation. Can be used to tweak the same generation with different prompts. If not provided, a latents tensor will be generated by sampling using the supplied random generator.
• prompt_embeds (torch.FloatTensor, optional) — Pre-generated text embeddings. Can be used to easily tweak text inputs, e.g. prompt weighting. If not provided, text embeddings will be generated from prompt input argument.
• pooled_prompt_embeds (torch.FloatTensor, optional) — Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, e.g. prompt weighting. If not provided, pooled text embeddings will be generated from prompt input argument.
• output_type (str, optional, defaults to "pil") — The output format of the generate image. Choose betweenPIL: PIL.Image.Image or np.array.
• return_dict (bool, optional, defaults to True) — Whether or not to return a ~pipelines.flux.FluxPipelineOutput instead of a plain tuple.
• joint_attention_kwargs (dict, optional) — A kwargs dictionary that if specified is passed along to the AttentionProcessor as defined underself.processor indiffusers.models.attention_processor.
• callback_on_step_end (Callable, optional) — A function that calls at the end of each denoising steps during the inference. The function is called with the following arguments: callback_on_step_end(self: DiffusionPipeline, step: int, timestep: int, callback_kwargs: Dict). callback_kwargs will include a list of all tensors as specified bycallback_on_step_end_tensor_inputs.
• callback_on_step_end_tensor_inputs (List, optional) — The list of tensor inputs for the callback_on_step_end function. The tensors specified in the list will be passed as callback_kwargs argument. You will only be able to include variables listed in the._callback_tensor_inputs attribute of your pipeline class.
• max_sequence_length (int defaults to 512) — Maximum sequence length to use with the prompt.
• upsampling_strength (float, optional, defaults to 1.0) — Indicates extent to transform the reference image when upsampling the results. Must be between 0 and
  1. The generated image is used as a starting point and more noise is added the higher theupsampling_strength. The number of denoising steps depends on the amount of noise initially added. When upsampling_strength is 1, added noise is maximum and the denoising process runs for the full number of iterations specified in num_inference_steps. A value of 0 skips the upsampling step and output the results at the resolution of self.resolution.

Returns

~pipelines.flux.FluxPipelineOutput or tuple

~pipelines.flux.FluxPipelineOutput if return_dictis True, otherwise a tuple. When returning a tuple, the first element is a list with the generated images.

Function invoked when calling the VisualCloze pipeline for generation.

Examples:

import torch from diffusers import VisualClozePipeline from diffusers.utils import load_image

image_paths = [ ...
... [ ... load_image( ... "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_mask.jpg" ... ), ... load_image( ... "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_image.jpg" ... ), ... ], ...
... [ ... load_image( ... "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_query_mask.jpg" ... ), ... None,
... ], ... ] task_prompt = "In each row, a logical task is demonstrated to achieve [IMAGE2] an aesthetically pleasing photograph based on [IMAGE1] sam 2-generated masks with rich color coding." content_prompt = "Majestic photo of a golden eagle perched on a rocky outcrop in a mountainous landscape. The eagle is positioned in the right foreground, facing left, with its sharp beak and keen eyes prominently visible. Its plumage is a mix of dark brown and golden hues, with intricate feather details. The background features a soft-focus view of snow-capped mountains under a cloudy sky, creating a serene and grandiose atmosphere. The foreground includes rugged rocks and patches of green moss. Photorealistic, medium depth of field, soft natural lighting, cool color palette, high contrast, sharp focus on the eagle, blurred background, tranquil, majestic, wildlife photography." pipe = VisualClozePipeline.from_pretrained( ... "VisualCloze/VisualClozePipeline-384", resolution=384, torch_dtype=torch.bfloat16 ... ) pipe.to("cuda")

image = pipe( ... task_prompt=task_prompt, ... content_prompt=content_prompt, ... image=image_paths, ... upsampling_width=1344, ... upsampling_height=768, ... upsampling_strength=0.4, ... guidance_scale=30, ... num_inference_steps=30, ... max_sequence_length=512, ... generator=torch.Generator("cpu").manual_seed(0), ... ).images[0][0] image.save("visualcloze.png")

VisualClozeGenerationPipeline

class diffusers.VisualClozeGenerationPipeline

< source >

( scheduler: FlowMatchEulerDiscreteScheduler vae: AutoencoderKL text_encoder: CLIPTextModel tokenizer: CLIPTokenizer text_encoder_2: T5EncoderModel tokenizer_2: T5TokenizerFast transformer: FluxTransformer2DModel resolution: int = 384 )

Parameters

• transformer (FluxTransformer2DModel) — Conditional Transformer (MMDiT) architecture to denoise the encoded image latents.
• scheduler (FlowMatchEulerDiscreteScheduler) — A scheduler to be used in combination with transformer to denoise the encoded image latents.
• vae (AutoencoderKL) — Variational Auto-Encoder (VAE) Model to encode and decode images to and from latent representations.
• text_encoder (CLIPTextModel) —CLIP, specifically the clip-vit-large-patch14 variant.
• text_encoder_2 (T5EncoderModel) —T5, specifically the google/t5-v1_1-xxl variant.
• tokenizer (CLIPTokenizer) — Tokenizer of classCLIPTokenizer.
• tokenizer_2 (T5TokenizerFast) — Second Tokenizer of classT5TokenizerFast.
• resolution (int, optional, defaults to 384) — The resolution of each image when concatenating images from the query and in-context examples.

The VisualCloze pipeline for image generation with visual context. Reference:https://github.com/lzyhha/VisualCloze/tree/main This pipeline is designed to generate images based on visual in-context examples.

__call__

< source >

( task_prompt: typing.Union[str, typing.List[str]] = None content_prompt: typing.Union[str, typing.List[str]] = None image: typing.Optional[torch.FloatTensor] = None num_inference_steps: int = 50 sigmas: typing.Optional[typing.List[float]] = None guidance_scale: float = 30.0 num_images_per_prompt: typing.Optional[int] = 1 generator: typing.Union[torch._C.Generator, typing.List[torch._C.Generator], NoneType] = None latents: typing.Optional[torch.FloatTensor] = None prompt_embeds: typing.Optional[torch.FloatTensor] = None pooled_prompt_embeds: typing.Optional[torch.FloatTensor] = None output_type: typing.Optional[str] = 'pil' return_dict: bool = True joint_attention_kwargs: typing.Optional[typing.Dict[str, typing.Any]] = None callback_on_step_end: typing.Optional[typing.Callable[[int, int, typing.Dict], NoneType]] = None callback_on_step_end_tensor_inputs: typing.List[str] = ['latents'] max_sequence_length: int = 512 ) → ~pipelines.flux.FluxPipelineOutput or tuple

Parameters

• task_prompt (str or List[str], optional) — The prompt or prompts to define the task intention.
• content_prompt (str or List[str], optional) — The prompt or prompts to define the content or caption of the target image to be generated.
• image (torch.Tensor, PIL.Image.Image, np.ndarray, List[torch.Tensor], List[PIL.Image.Image], or List[np.ndarray]) —Image, numpy array or tensor representing an image batch to be used as the starting point. For both numpy array and pytorch tensor, the expected value range is between [0, 1] If it’s a tensor or a list or tensors, the expected shape should be (B, C, H, W) or (C, H, W). If it is a numpy array or a list of arrays, the expected shape should be (B, H, W, C) or (H, W, C).
• num_inference_steps (int, optional, defaults to 50) — The number of denoising steps. More denoising steps usually lead to a higher quality image at the expense of slower inference.
• sigmas (List[float], optional) — Custom sigmas to use for the denoising process with schedulers which support a sigmas argument in their set_timesteps method. If not defined, the default behavior when num_inference_steps is passed will be used.
• guidance_scale (float, optional, defaults to 30.0) — Guidance scale as defined in Classifier-Free Diffusion Guidance. guidance_scale is defined as w of equation 2. of Imagen Paper. Guidance scale is enabled by settingguidance_scale > 1. Higher guidance scale encourages to generate images that are closely linked to the text prompt, usually at the expense of lower image quality.
• num_images_per_prompt (int, optional, defaults to 1) — The number of images to generate per prompt.
• generator (torch.Generator or List[torch.Generator], optional) — One or a list of torch generator(s)to make generation deterministic.
• latents (torch.FloatTensor, optional) — Pre-generated noisy latents, sampled from a Gaussian distribution, to be used as inputs for image generation. Can be used to tweak the same generation with different prompts. If not provided, a latents tensor will be generated by sampling using the supplied random generator.
• prompt_embeds (torch.FloatTensor, optional) — Pre-generated text embeddings. Can be used to easily tweak text inputs, e.g. prompt weighting. If not provided, text embeddings will be generated from prompt input argument.
• pooled_prompt_embeds (torch.FloatTensor, optional) — Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, e.g. prompt weighting. If not provided, pooled text embeddings will be generated from prompt input argument.
• output_type (str, optional, defaults to "pil") — The output format of the generate image. Choose betweenPIL: PIL.Image.Image or np.array.
• return_dict (bool, optional, defaults to True) — Whether or not to return a ~pipelines.flux.FluxPipelineOutput instead of a plain tuple.
• joint_attention_kwargs (dict, optional) — A kwargs dictionary that if specified is passed along to the AttentionProcessor as defined underself.processor indiffusers.models.attention_processor.
• callback_on_step_end (Callable, optional) — A function that calls at the end of each denoising steps during the inference. The function is called with the following arguments: callback_on_step_end(self: DiffusionPipeline, step: int, timestep: int, callback_kwargs: Dict). callback_kwargs will include a list of all tensors as specified bycallback_on_step_end_tensor_inputs.
• callback_on_step_end_tensor_inputs (List, optional) — The list of tensor inputs for the callback_on_step_end function. The tensors specified in the list will be passed as callback_kwargs argument. You will only be able to include variables listed in the._callback_tensor_inputs attribute of your pipeline class.
• max_sequence_length (int defaults to 512) — Maximum sequence length to use with the prompt.

Returns

~pipelines.flux.FluxPipelineOutput or tuple

~pipelines.flux.FluxPipelineOutput if return_dictis True, otherwise a tuple. When returning a tuple, the first element is a list with the generated images.

Function invoked when calling the VisualCloze pipeline for generation.

Examples:

import torch from diffusers import VisualClozeGenerationPipeline, FluxFillPipeline as VisualClozeUpsamplingPipeline from diffusers.utils import load_image from PIL import Image

image_paths = [ ...
... [ ... load_image( ... "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_mask.jpg" ... ), ... load_image( ... "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_incontext-example-1_image.jpg" ... ), ... ], ...
... [ ... load_image( ... "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/visualcloze/visualcloze_mask2image_query_mask.jpg" ... ), ... None,
... ], ... ] task_prompt = "In each row, a logical task is demonstrated to achieve [IMAGE2] an aesthetically pleasing photograph based on [IMAGE1] sam 2-generated masks with rich color coding." content_prompt = "Majestic photo of a golden eagle perched on a rocky outcrop in a mountainous landscape. The eagle is positioned in the right foreground, facing left, with its sharp beak and keen eyes prominently visible. Its plumage is a mix of dark brown and golden hues, with intricate feather details. The background features a soft-focus view of snow-capped mountains under a cloudy sky, creating a serene and grandiose atmosphere. The foreground includes rugged rocks and patches of green moss. Photorealistic, medium depth of field, soft natural lighting, cool color palette, high contrast, sharp focus on the eagle, blurred background, tranquil, majestic, wildlife photography." pipe = VisualClozeGenerationPipeline.from_pretrained( ... "VisualCloze/VisualClozePipeline-384", resolution=384, torch_dtype=torch.bfloat16 ... ) pipe.to("cuda")

image = pipe( ... task_prompt=task_prompt, ... content_prompt=content_prompt, ... image=image_paths, ... guidance_scale=30, ... num_inference_steps=30, ... max_sequence_length=512, ... generator=torch.Generator("cpu").manual_seed(0), ... ).images[0][0]

pipe_upsample = VisualClozeUpsamplingPipeline.from_pipe(pipe) pipe_upsample.to("cuda")

mask_image = Image.new("RGB", image.size, (255, 255, 255))

image = pipe_upsample( ... image=image, ... mask_image=mask_image, ... prompt=content_prompt, ... width=1344, ... height=768, ... strength=0.4, ... guidance_scale=30, ... num_inference_steps=30, ... max_sequence_length=512, ... generator=torch.Generator("cpu").manual_seed(0), ... ).images[0]

image.save("visualcloze.png")

Disable sliced VAE decoding. If enable_vae_slicing was previously enabled, this method will go back to computing decoding in one step.

Disable tiled VAE decoding. If enable_vae_tiling was previously enabled, this method will go back to computing decoding in one step.

Enable sliced VAE decoding. When this option is enabled, the VAE will split the input tensor in slices to compute decoding in several steps. This is useful to save some memory and allow larger batch sizes.

Enable tiled VAE decoding. When this option is enabled, the VAE will split the input tensor into tiles to compute decoding and encoding in several steps. This is useful for saving a large amount of memory and to allow processing larger images.

encode_prompt

< source >

( layout_prompt: typing.Union[str, typing.List[str]] task_prompt: typing.Union[str, typing.List[str]] content_prompt: typing.Union[str, typing.List[str]] device: typing.Optional[torch.device] = None num_images_per_prompt: int = 1 prompt_embeds: typing.Optional[torch.FloatTensor] = None pooled_prompt_embeds: typing.Optional[torch.FloatTensor] = None max_sequence_length: int = 512 lora_scale: typing.Optional[float] = None )

Parameters

• layout_prompt (str or List[str], optional) — The prompt or prompts to define the number of in-context examples and the number of images involved in the task.
• task_prompt (str or List[str], optional) — The prompt or prompts to define the task intention.
• content_prompt (str or List[str], optional) — The prompt or prompts to define the content or caption of the target image to be generated.
• device — (torch.device): torch device
• num_images_per_prompt (int) — number of images that should be generated per prompt
• prompt_embeds (torch.FloatTensor, optional) — Pre-generated text embeddings. Can be used to easily tweak text inputs, e.g. prompt weighting. If not provided, text embeddings will be generated from prompt input argument.
• pooled_prompt_embeds (torch.FloatTensor, optional) — Pre-generated pooled text embeddings. Can be used to easily tweak text inputs, e.g. prompt weighting. If not provided, pooled text embeddings will be generated from prompt input argument.
• lora_scale (float, optional) — A lora scale that will be applied to all LoRA layers of the text encoder if LoRA layers are loaded.

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