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arXiv 2602.00583cs.CVcs.AI
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MAUGen: 一种用于多身份面部表情和AU标签生成的统一扩散方法

MAUGen: A Unified Diffusion Approach for Multi-Identity Facial Expression and AU Label Generation

Xiangdong Li, Ye Lou, Ao Gao, Wei Zhang, Siyang Song

AI总结:

MAUGen通过统一的扩散方法生成多身份面部表情和AU标签,提升面部动作单元识别系统的泛化能力。

摘要:

缺乏大规模、具有代表性多样性的面部图像,这些图像具有精确的动作单元(AU)发生和强度标注,长期以来被认为是开发通用AU识别系统的基本瓶颈。在本文中,我们提出MAUGen,一种基于扩散的多模态框架,能够联合生成大量逼真的人脸表情和解剖学上一致的AU标签,包括发生和强度,这些都基于单一的描述性文本提示。我们的MAUGen包含两个关键模块:(1) 多模态表示学习(MRL)模块,它在统一的潜在空间中捕捉配对的文本描述、面部身份、表情图像和AU激活之间的关系;以及(2) 基于扩散的图像标签生成器(DIG),它将联合表示解码为跨不同身份的一致面部图像-标签对。在该框架下,我们引入了多身份面部动作(MIFA),一个大规模多模态合成数据集,具有全面的AU标注和身份变化。广泛的实验表明,MAUGen在合成逼真、具有代表性多样性的面部图像以及语义上一致的AU标签方面优于现有方法。

英文摘要:

The lack of large-scale, demographically diverse face images with precise Action Unit (AU) occurrence and intensity annotations has long been recognized as a fundamental bottleneck in developing generalizable AU recognition systems. In this paper, we propose MAUGen, a diffusion-based multi-modal framework that jointly generates a large collection of photorealistic facial expressions and anatomically consistent AU labels, including both occurrence and intensity, conditioned on a single descriptive text prompt. Our MAUGen involves two key modules: (1) a Multi-modal Representation Learning (MRL) module that captures the relationships among the paired textual description, facial identity, expression image, and AU activations within a unified latent space; and (2) a Diffusion-based Image label Generator (DIG) that decodes the joint representation into aligned facial image-label pairs across diverse identities. Under this framework, we introduce Multi-Identity Facial Action (MIFA), a large-scale multimodal synthetic dataset featuring comprehensive AU annotations and identity variations. Extensive experiments demonstrate that MAUGen outperforms existing methods in synthesizing photorealistic, demographically diverse facial images along with semantically aligned AU labels.

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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