InfiniteYou - ByteDance's open-source identity-preserving image generation framework

What is InfiniteYou?

InfiniteYou (InfU) is an identity-preserving image generation framework developed by ByteDance's Intelligent Creation Team, based on diffusion transformers (such as FLUX). It injects identity features into the diffusion model using InfuseNet to enhance identity similarity while maintaining image generation capabilities. InfiniteYou combines a multi-stage training strategy, including pre-training and supervised fine-tuning (SFT), using synthetic single-person multiple-sample (SPMS) data to improve text-image alignment, image quality, and aesthetics. InfiniteYou boasts superior performance and strong compatibility, making a significant contribution to the field of generative AI.

InfiniteYou's main functions

• Identity preservationThe generated image retains a high degree of facial similarity to the input identity image.
• Text-driven image generationUsers can control the content, style, and scene of the generated images based on text descriptions.
• High-quality image generationThe generated images perform well in terms of quality, aesthetics, and text alignment.
• Plug-in designIt is compatible with a variety of existing methods and tools (such as ControlNets, LoRAs, etc.) and supports more complex and personalized tasks.

InfiniteYou's technical principles

• InfuseNetInfuseNet is the core component of InfiniteYou, similar to ControlNet, injecting identity features into the diffusion model (such as FLUX). Identity features are injected into the diffusion model based on residual connections, avoiding direct modification of the attention layer and reducing the negative impact on the generation capability of the base model.
• Pre-training phaseIt learns the ability to reconstruct identity images by pre-training on real single-person single-sample (SPSS) data.
• Supervision and fine-tuning phaseFine-tuning based on synthetic single-person multiple-sample (SPMS) data improves text-image alignment, image quality, and aesthetics.
• Diffusion TransformersUsing advanced diffusion transformers (such as FLUX) as the base model, the model performs exceptionally well in image generation. Diffusion transformers support the generation of high-quality, high-resolution images, providing a robust foundation for identity-preserving image generation.
• Plug-in designInfiniteYou supports various existing methods and tools, such as ControlNets and LoRAs, providing greater flexibility and extensibility. Users can choose different plugins to achieve more complex and personalized tasks, such as stylization and multi-concept generation.

InfiniteYou's project address

• Project official website:https://bytedance.github.io/InfiniteYou/
• GitHub repository:https://github.com/bytedance/InfiniteYou
• HuggingFace model library:https://huggingface.co/ByteDance/InfiniteYou
• arXiv technical paper:https://arxiv.org/pdf/2503.16418
• Experience the demo online:https://huggingface.co/spaces/ByteDance/InfiniteYou

Application scenarios of InfiniteYou

• Social media and personal brandingUsers can generate images in different styles from their own photos for sharing or brand promotion.
• Film and EntertainmentQuickly generate images of actors or characters in different scenes to assist in film and television production and character design.
• Advertising and MarketingGenerate personalized ads based on photos of the target audience to increase engagement.
• Education and TrainingGenerate virtual teachers or historical figures for online education and historical display.
• Art and DesignIt helps artists and designers quickly generate creative sketches and explore different styles.