让人脸穿越岁月仍保持身份一致,实现自然老化的生成。
Face Time Traveller : Travel Through Ages Without Losing Identity
- 用生物与环境双重线索引导生成,提升年龄变化的合理性。
- 无需调参快速映射真实人脸到扩散空间,重建更精准。
- 动态调控注意力,兼顾老化特征与身份结构一致性,适合影视与安防应用。
人脸老化是一个受环境与遗传因素共同影响的病态问题,在娱乐、刑侦和数字存档中至关重要,要求生成结果既保持身份一致性又具备视觉真实性。现有方法依赖数值化年龄表示,忽视了生物与情境线索的交互作用。尽管近年模型有所进步,但在大范围年龄变换中仍难保持身份一致,且存在静态注意力机制与优化密集型反演导致的适应性差、细粒度控制弱及背景不一致等问题。为此,我们提出基于扩散模型的 Face Time Traveller (FaceTT) 框架,实现高保真、身份一致的人脸老化生成。提出面向面部属性的提示增强策略,编码内在(生物)与外在(环境)老化线索以实现情境感知条件生成;设计无需调参的角反演方法,高效将真实人脸映射至扩散隐空间,实现快速准确重建;引入自适应注意力控制机制,动态平衡跨注意力对语义老化线索的捕捉与自注意力对结构和身份的保留。在基准数据集与真实场景测试集上的大量实验表明,FaceTT 在身份保留、背景一致性与老化真实性方面均优于当前最优方法(SOTA)。
原文摘要 · Abstract (English)
Face aging, an ill-posed problem shaped by environmental and genetic factors, is vital in entertainment, forensics, and digital archiving, where realistic age transformations must preserve both identity and visual realism. However, existing works relying on numerical age representations overlook the interplay of biological and contextual cues. Despite progress in recent face aging models, they struggle with identity preservation in wide age transformations, also static attention and optimization-heavy inversion in diffusion limit adaptability, fine-grained control and background consistency. To address these challenges, we propose Face Time Traveller (FaceTT), a diffusion-based framework that achieves high-fidelity, identity-consistent age transformation. Here, we introduce a Face-Attribute-Aware Prompt Refinement strategy that encodes intrinsic (biological) and extrinsic (environmental) aging cues for context-aware conditioning. A tuning-free Angular Inversion method is proposed that efficiently maps real faces into the diffusion latent space for fast and accurate reconstruction. Moreover, an Adaptive Attention Control mechanism is introduced that dynamically balances cross-attention for semantic aging cues and self-attention for structural and identity preservation. Extensive experiments on benchmark datasets and in-the-wild testset demonstrate that FaceTT achieves superior identity retention, background preservation and aging realism over state-of-the-art (SOTA) methods.
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