diffusers/pr_14385/en/api/pipelines/joyimage_edit_plus.md

JoyAI-Image-Edit-Plus

JoyAI-Image is a unified multimodal foundation model for image understanding, text-to-image generation, and instruction-guided image editing. It combines an 8B Multimodal Large Language Model (MLLM) with a 16B Multimodal Diffusion Transformer (MMDiT).

JoyAI-Image-Edit-Plus is a multi-image instruction-guided editing model that accepts multiple reference images and a text instruction to generate a new image that combines elements from the references according to the instruction. It supports 1–5 reference images per sample.

Model	Description	Download
JoyAI-Image-Edit-Plus	Multi-image instruction-guided editing with element composition from multiple references	Hugging Face

import torch
from PIL import Image
from diffusers import JoyImageEditPlusPipeline

pipeline = JoyImageEditPlusPipeline.from_pretrained(
    "jdopensource/JoyAI-Image-Edit-Plus-Diffusers", dtype=torch.bfloat16
)
pipeline.to("cuda")

images = [
    Image.open("reference_0.png").convert("RGB"),
    Image.open("reference_1.png").convert("RGB"),
]

target_h, target_w = pipeline.image_processor.get_default_height_width(images[-1])

output = pipeline(
    images=images,
    prompt="Combine the person from the second image with the scene from the first image.",
    negative_prompt="low quality, blurry, deformed",
    height=target_h,
    width=target_w,
    num_inference_steps=30,
    guidance_scale=4.0,
    generator=torch.Generator("cuda").manual_seed(42),
).images[0]
output.save("joyimage_edit_plus_output.png")

JoyImageEditPlusPipeline[[diffusers.JoyImageEditPlusPipeline]]

diffusers.JoyImageEditPlusPipeline[[diffusers.JoyImageEditPlusPipeline]]

diffusers.JoyImageEditPlusPipeline(scheduler: FlowMatchEulerDiscreteScheduler, vae: AutoencoderKLWan, text_encoder: Qwen3VLForConditionalGeneration, tokenizer: Qwen2Tokenizer, transformer: JoyImageEditPlusTransformer3DModel, processor: Qwen3VLProcessor, text_token_max_length: int = 2048)

Source

Parameters:

scheduler (FlowMatchEulerDiscreteScheduler) : A scheduler to be used in combination with transformer to denoise the encoded image latents.

vae (AutoencoderKLWan) : Variational Auto-Encoder (VAE) model to encode and decode images to and from latent representations.

text_encoder (Qwen3VLForConditionalGeneration) : Multimodal text encoder for prompt encoding with inline image understanding.

tokenizer (Qwen2Tokenizer) : Tokenizer for text processing.

transformer (JoyImageEditPlusTransformer3DModel) : Conditional Transformer (MMDiT) architecture to denoise the encoded image latents.

processor (Qwen3VLProcessor) : Processor for multimodal inputs (text + images).

text_token_max_length (int, defaults to 2048) : Maximum token length for text encoding.

Diffusion pipeline for multi-image instruction-guided editing using JoyImage Edit Plus.

Supports multiple reference images with different resolutions. Each reference image is independently VAE-encoded and patchified, then concatenated with the target noise patches for joint denoising.

call[[diffusers.JoyImageEditPlusPipeline.call]]

__call__(images: list[PIL.Image.Image] | list[list[PIL.Image.Image]] | None = None, prompt: str | list[str] = None, height: int | None = None, width: int | None = None, num_inference_steps: int = 30, timesteps: list = None, sigmas: list = None, guidance_scale: float = 4.0, negative_prompt: str | list[str] | None = None, generator: typing.Union[torch.Generator, list[torch.Generator], NoneType] = None, latents: typing.Optional[torch.Tensor] = None, prompt_embeds: typing.Optional[torch.Tensor] = None, prompt_embeds_mask: typing.Optional[torch.Tensor] = None, negative_prompt_embeds: typing.Optional[torch.Tensor] = None, negative_prompt_embeds_mask: typing.Optional[torch.Tensor] = None, output_type: str | None = 'pil', return_dict: bool = True, callback_on_step_end: typing.Union[typing.Callable[[int, int, dict], NoneType], diffusers.callbacks.PipelineCallback, diffusers.callbacks.MultiPipelineCallbacks, NoneType] = None, callback_on_step_end_tensor_inputs: list = ['latents'], max_sequence_length: int = 4096)

Source

Parameters:

images (list[Image.Image] or list[list[Image.Image]], optional) : Reference images for editing. Each image can have a different resolution. If a flat list is provided, it is treated as one sample with multiple references.

prompt (str or list[str], optional) : The prompt or prompts to guide the image generation. If not defined, one has to pass prompt_embeds instead.

height (int, optional) : The height in pixels of the generated image. If None, determined from the last reference image.

width (int, optional) : The width in pixels of the generated image. If None, determined from the last reference image.

num_inference_steps (int, optional, defaults to 30) : The number of denoising steps. More denoising steps usually lead to a higher quality image at the expense of slower inference.

timesteps (list[int], optional) : Custom timesteps to use for the denoising process. If not defined, equal spacing is used.

sigmas (list[float], optional) : Custom sigmas to use for the denoising process.

guidance_scale (float, optional, defaults to 4.0) : Classifier-free guidance scale. Higher values encourage the model to generate images more aligned with the prompt at the expense of lower image quality.

negative_prompt (str or list[str], optional) : The prompt or prompts not to guide the image generation. If not defined, a blank prompt is used for classifier-free guidance.

generator (torch.Generator or list[torch.Generator], optional) : One or a list of torch generator(s) to make generation deterministic.

latents (torch.Tensor, optional) : Pre-generated noisy latents to be used as inputs for image generation.

prompt_embeds (torch.Tensor, optional) : Pre-generated text embeddings. Can be used to easily tweak text inputs.

prompt_embeds_mask (torch.Tensor, optional) : Attention mask for pre-generated text embeddings.

negative_prompt_embeds (torch.Tensor, optional) : Pre-generated negative text embeddings.

negative_prompt_embeds_mask (torch.Tensor, optional) : Attention mask for pre-generated negative text embeddings.

output_type (str, optional, defaults to "pil") : The output format of the generated image. Choose between "pil" (PIL.Image.Image), "np" (np.ndarray), "pt" (torch.Tensor), or "latent" for raw latent output.

return_dict (bool, optional, defaults to True) : Whether or not to return a JoyImageEditPlusPipelineOutput instead of a plain tuple.

callback_on_step_end (Callable, optional) : A function called at the end of each denoising step with arguments: the pipeline, step index, timestep, and a dict of callback tensor inputs.

callback_on_step_end_tensor_inputs (list[str], optional, defaults to ["latents"]) : The list of tensor inputs for the callback_on_step_end function.

max_sequence_length (int, optional, defaults to 4096) : Maximum sequence length for the text encoder.

Returns: JoyImageEditPlusPipelineOutput or tuple

If return_dict is True, JoyImageEditPlusPipelineOutput is returned, otherwise a tuple is returned where the first element is a list of generated images.

Function invoked when calling the pipeline for generation.

Examples:

>>> import torch
>>> from diffusers import JoyImageEditPlusPipeline
>>> from diffusers.utils import load_image

>>> model_id = "jdopensource/JoyAI-Image-Edit-Plus-Diffusers"
>>> pipe = JoyImageEditPlusPipeline.from_pretrained(model_id, torch_dtype=torch.bfloat16)
>>> pipe.to("cuda")

>>> images = [
...     load_image("dog.png"),
...     load_image("person.png"),
... ]
>>> output = pipe(
...     images=images,
...     prompt="Let the person lovingly play with the dog.",
...     height=1024,
...     width=1024,
...     num_inference_steps=30,
...     guidance_scale=4.0,
...     generator=torch.manual_seed(42),
... )
>>> output.images[0].save("output.png")

encode_prompt_multiple_images[[diffusers.JoyImageEditPlusPipeline.encode_prompt_multiple_images]]

encode_prompt_multiple_images(prompt: str | list[str], device: typing.Optional[torch.device] = None, images: list[PIL.Image.Image] | None = None, max_sequence_length: int | None = None)

Source

Encode prompts with inline tokens via the Qwen3-VL processor.

prepare_latents[[diffusers.JoyImageEditPlusPipeline.prepare_latents]]

prepare_latents(batch_size: int, num_channels_latents: int, height: int, width: int, dtype: dtype, device: device, generator: typing.Union[torch.Generator, list[torch.Generator], NoneType], reference_images: list[list[PIL.Image.Image]] | None = None, latents: typing.Optional[torch.Tensor] = None)

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Parameters:

latents : Optional pre-computed noise for the target slot. Shape (B, C, 1, H', W') where H' and W' are the latent-space dimensions. When None, random noise is sampled.

Returns: padded_latents

[B, max_patches, C, pt, ph, pw] target_mask: [B, max_patches] (True for target patches) shape_list: per-sample list of (t, h, w) tuples for each component

Prepare 6D padded latent tensor with target noise + reference image latents.

JoyImageEditPlusPipelineOutput[[diffusers.JoyImageEditPlusPipelineOutput]]

diffusers.JoyImageEditPlusPipelineOutput[[diffusers.JoyImageEditPlusPipelineOutput]]

diffusers.JoyImageEditPlusPipelineOutput(images: typing.Union[typing.List[PIL.Image.Image], numpy.ndarray])

Source

Output class for JoyImage Edit Plus multi-image editing pipelines.