ComfyUI PhotoMakerV2 | Create Realistic Photos

What is PhotoMakerV2

PhotoMakerV2, an upgrade from PhotoMaker, offers an efficient method for personalized text-to-image generation. It synthesizes realistic photos of individuals using a few input identity images and a text prompt.

Some key features of PhotoMakerV2 include:

• High efficiency: Quickly generates personalized photos.
• Excellent identity preservation: Maintains the likeness of input identities.
• Flexible text control: Allows specifying context, style, attributes, etc., in the prompt.
• Improved identity fidelity: Enhanced compared to PhotoMaker V1. PhotoMakerV2 generates photorealistic images of a person in various contexts, stylizes appearances, changes attributes like age and gender, merges identities, and modernizes people from old photos or artwork. It unlocks numerous creative possibilities.

How PhotoMakerV2 Works

PhotoMakerV2 encodes one or more input identity images into a "stacked ID embedding," serving as a unified representation encapsulating identity information.

This embedding, combined with a text prompt, feeds into a text-to-image diffusion model. The model then produces an image depicting the embedded identity in the context described by the prompt.

Some key aspects of how it works under the hood:

• Uses an identity encoder to extract identity information from input face images
• Improves identity preservation by leveraging an external face recognition model (InsightFace)
• Encodes multiple identity images into a stacked embedding to capture identity comprehensively
• Feeds the stacked ID embedding into the diffusion model's cross-attention layers
• Guides generation with the text prompt while adaptively merging the identity information
• Trained with an identity-oriented dataset to improve identification capabilities

How to Use ComfyUI PhotoMakerV2

To use PhotoMakerV2 in ComfyUI, primarily interact with the PhotoMakerEncodePlus node. A typical workflow involves:

1. Load PhotoMakerV2 model using "PhotoMaker Loader Plus" node.
2. Load one or more identity images using "Prepare Images For CLIP Vision" node.
3. Load InsightFace model required by PhotoMakerV2 using "PhotoMaker InsightFace Loader" node.
4. Connect outputs of these nodes to corresponding inputs of "PhotoMaker Encode Plus" node.
5. In the "PhotoMaker Encode Plus" node, specify the prompt describing the desired image. Use the special trigger word in the prompt where the identity should appear.
6. Connect output conditioning from "PhotoMaker Encode Plus" to a "KSampler" node to generate the image.

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