ID$^3$: Identity-Preserving-yet-Diversified Diffusion Models for Synthetic Face Recognition
<|reference_start|>ID$^3$: Identity-Preserving-yet-Diversified Diffusion Models for Synthetic Face Recognition: Synthetic face recognition (SFR) aims to generate synthetic face datasets that mimic the distribution of real face data, which allows for training face recognition models in a privacy-preserving manner. Despite the remarkable potential of diffusion models in image generation, current diffusion-based SFR models struggle with generalization to real-world faces. To address this limitation, we outline three key objectives for SFR: (1) promoting diversity across identities (inter-class diversity), (2) ensuring diversity within each identity by injecting various facial attributes (intra-class diversity), and (3) maintaining identity consistency within each identity group (intra-class identity preservation). Inspired by these goals, we introduce a diffusion-fueled SFR model termed $\text{ID}^3$. $\text{ID}^3$ employs an ID-preserving loss to generate diverse yet identity-consistent facial appearances. Theoretically, we show that minimizing this loss is equivalent to maximizing the lower bound of an adjusted conditional log-likelihood over ID-preserving data. This equivalence motivates an ID-preserving sampling algorithm, which operates over an adjusted gradient vector field, enabling the generation of fake face recognition datasets that approximate the distribution of real-world faces. Extensive experiments across five challenging benchmarks validate the advantages of $\text{ID}^3$.<|reference_end|>
@article{li2024id$^3$:,
    title={ID$^3$: Identity-Preserving-yet-Diversified Diffusion Models for
  Synthetic Face Recognition},
    author={Shen Li, Jianqing Xu, Jiaying Wu, Miao Xiong, Ailin Deng, Jiazhen Ji,
  Yuge Huang, Wenjie Feng, Shouhong Ding, Bryan Hooi},
    journal={arXiv preprint arXiv:2409.17576},
    year={2024},
    archivePrefix={arXiv},
    eprint={2409.17576},
    primaryClass={cs.CV}
}