Mitigating Longitudinal Performance Degradation in Child Face Recognition Using Synthetic Data

• URL: http://arxiv.org/abs/2601.01689v1
• Date: Sun, 04 Jan 2026 23:03:03 GMT
• Title: Mitigating Longitudinal Performance Degradation in Child Face Recognition Using Synthetic Data
• Authors: Afzal Hossain, Stephanie Schuckers,
• Abstract summary: This work investigates whether synthetic face data can act as a longitudinal stabilizer by improving temporal robustness of child face recognition models.<n>We evaluate three settings: pretrained MagFace embeddings without dataset specific fine-tuning, MagFace fine-tuned using authentic training faces only, and MagFace fine-tuned using a combination of authentic and synthetically generated training faces.<n> Experimental results across enrollment verification gaps from 6 to 36 months show that synthetic-augmented fine tuning substantially reduces error rates relative to both the pretrained baseline and real only fine tuning.
• Score: 0.7734726150561086
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Longitudinal face recognition in children remains challenging due to rapid and nonlinear facial growth, which causes template drift and increasing verification errors over time. This work investigates whether synthetic face data can act as a longitudinal stabilizer by improving temporal robustness of child face recognition models. Using an identity disjoint protocol on the Young Face Aging (YFA) dataset, we evaluate three settings: (i) pretrained MagFace embeddings without dataset specific fine-tuning, (ii) MagFace fine-tuned using authentic training faces only, and (iii) MagFace fine-tuned using a combination of authentic and synthetically generated training faces. Synthetic data is generated using StyleGAN2 ADA and incorporated exclusively within the training identities; a post generation filtering step is applied to mitigate identity leakage and remove artifact affected samples. Experimental results across enrollment verification gaps from 6 to 36 months show that synthetic-augmented fine tuning substantially reduces error rates relative to both the pretrained baseline and real only fine tuning. These findings provide a risk aware assessment of synthetic augmentation for improving identity persistence in pediatric face recognition.

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