arXiv:2603.22701cs.CV2026-03

首个支持跨年龄参考的面部修复框架,修复时能保持身份与年龄一致性。

TimeWeaver: Age-Consistent Reference-Based Face Restoration with Identity Preservation

  • 通过解耦身份与年龄条件,训练时学习抗年龄干扰的身份表征。
  • 在无须再训练的情况下,实现目标年龄提示下的精准年龄还原。
  • 适合历史人物修复、寻人画像等跨年龄身份重建场景。

近期面部修复研究从视觉保真度转向身份保真度,推动了从无参考到有参考范式的转变,即利用同一人的参考图像来指导修复。然而,现有方法假设参考图与退化输入在年龄上对齐。当仅能获得跨年龄参考(如历史照片修复或走失人员检索)时,这些方法无法维持年龄一致性。为此,我们提出 TimeWeaver,首个支持跨年龄参考的参考式面部修复框架。给定任意参考图像和目标年龄提示,TimeWeaver 能生成兼具身份一致性和年龄一致性的修复结果。具体而言,我们在训练与推理阶段解耦身份与年龄条件:训练时,通过基于 Transformer 的 ID-Fusion 模块将全局身份嵌入与抑制年龄特征的面部令牌融合,学习鲁棒的身份表示;推理时,采用两种无需训练的技术——年龄感知梯度引导与令牌目标注意力增强,引导采样过程以匹配目标年龄语义,实现精确控制。大量实验表明,TimeWeaver 在视觉质量、身份保留与年龄一致性方面均优于现有方法。

原文摘要 · Abstract (English)

Recent progress in face restoration has shifted from visual fidelity to identity fidelity, driving a transition from reference-free to reference-based paradigms that condition restoration on reference images of the same person. However, these methods assume the reference and degraded input are age-aligned. When only cross-age references are available, as in historical restoration or missing-person retrieval, they fail to maintain age fidelity. To address this limitation, we propose TimeWeaver, the first reference-based face restoration framework supporting cross-age references. Given arbitrary reference images and a target-age prompt, TimeWeaver produces restorations with both identity fidelity and age consistency. Specifically, we decouple identity and age conditioning across training and inference. During training, the model learns an age-robust identity representation by fusing a global identity embedding with age-suppressed facial tokens via a transformer-based ID-Fusion module. During inference, two training-free techniques, Age-Aware Gradient Guidance and Token-Targeted Attention Boost, steer sampling toward desired age semantics, enabling precise adherence to the target-age prompt. Extensive experiments show that TimeWeaver surpasses existing methods in visual quality, identity preservation, and age consistency.

面部修复跨年龄身份保持生成模型

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