提出首个开放的个性化年龄估计基准,支持多参考图精确预测。
Few-Shot Personalized Age Estimation
- 基于多张参考图像构建个性化的年龄预测模型
- 非线性方法显著优于传统线性模型,提升约12%误差降低
- 适合需要个体化分析的生物识别与健康研究场景
现有年龄估计方法将每张人脸视为独立样本,建立从外观到年龄的全局映射。但个体因遗传、生活方式和健康状况不同,老化速率各异,导致人脸到年龄的映射具有身份依赖性。当拥有同一人已知年龄的参考图像时,可利用该上下文进行个性化估计。目前唯一相关基准(NIST FRVT)为闭源且仅支持单参考图像。本文提出OpenPAE,首个支持$N$-shot个性化年龄估计的开源基准,具备严格评估协议。我们构建了从算术偏移、闭式贝叶斯线性回归到条件注意力神经过程的渐进式基线体系。实验表明,个性化显著提升性能,增益非单纯领域适应,非线性方法明显优于简单模型。所有模型、代码、协议与评估划分均已公开。
原文摘要 · Abstract (English)
Existing age estimation methods treat each face as an independent sample, learning a global mapping from appearance to age. This ignores a well-documented phenomenon: individuals age at different rates due to genetics, lifestyle, and health, making the mapping from face to age identity-dependent. When reference images of the same person with known ages are available, we can exploit this context to personalize the estimate. The only existing benchmark for this task (NIST FRVT) is closed-source and limited to a single reference image. In this work, we introduce OpenPAE, the first open benchmark for $N$-shot personalized age estimation with strict evaluation protocols. We establish a hierarchy of increasingly sophisticated baselines: from arithmetic offset, through closed-form Bayesian linear regression, to a conditional attentive neural process. Our experiments show that personalization consistently improves performance, that the gains are not merely domain adaptation, and that nonlinear methods significantly outperform simpler alternatives. We release all models, code, protocols, and evaluation splits.
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