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arXiv 2605.26111cs.CVcs.AIcs.GRcs.LGcs.MM

从多模态大语言模型中榨取能力用于主题驱动生成

Squeezing Capacity from Multimodal Large Language Models for Subject-driven Generation

University of Toronto & Vector Institute(多伦多大学及向量研究所);Adobe(Adobe公司);Google(谷歌公司)

Shuhong Zheng, Aashish Kumar Misraa, Yu-Teng Li, Yu-Jhe Li, Igor Gilitschenski

AI总结:

提出一种结合多模态大语言模型和VAE身份条件的方法,通过双层级聚合模块和多阶段去噪策略,在主题驱动图像生成中实现多模态理解与身份保持的平衡,优于现有方法。

摘要:

主题驱动图像生成旨在合成新图像,在遵循文本指令的同时保持给定主题的身份。现有方法通常分别编码文本和参考图像,这限制了跨模态推理能力并导致复制粘贴伪影。最近连接多模态模型和扩散模型的框架改进了指令遵循,但很大程度上忽略了身份保持。为了解决这些限制,我们将扩散模型条件设置为联合编码文本和参考图像的多模态大语言模型(MLLM),并用基于VAE的身份条件进行增强。设计了一种新颖的双层级聚合(DLA)模块来聚合多级MLLM特征以实现最优条件,并应用多阶段去噪策略在推理过程中逐步平衡来自MLLM的语义信息和来自VAE的精细细节身份。大量实验表明,我们的方法协调了多模态理解与身份保持,缓解了复制粘贴问题,并在主题驱动图像生成中实现了优于人类偏好的性能。我们的项目网站位于https://zsh2000.github.io/squeeze-mllm-subject-gen/。

英文摘要:

Subject-driven image generation aims to synthesize new images that preserve the identity of the given subject while following textual instructions. Existing approaches often encode text and reference images separately. This limits cross-modal reasoning abilities and causes copy-paste artifacts. Recent frameworks that connect multimodal models and diffusion models improve instruction following, but largely overlook identity preservation. To address these limitations, we condition diffusion models on Multimodal Large Language Models (MLLMs) that jointly encode text and reference images, and augment it with VAE-based identity conditioning. A novel Dual Layer Aggregation (DLA) module is designed to aggregate multi-level MLLM features for optimal conditioning, and a multi-stage denoising strategy is applied to progressively balance the semantic information from MLLM and fine-detail identity from VAE during inference. Extensive experiments demonstrate that our approach harmonizes multimodal understanding with identity preservation, mitigates copy-paste issues, and achieves superior performance regarding human preference on subject-driven image generation. Our project website is available at https://zsh2000.github.io/squeeze-mllm-subject-gen/.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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