WaveFace: Authentic Face Restoration with Efficient Frequency Recovery
<|reference_start|>WaveFace: Authentic Face Restoration with Efficient Frequency Recovery: Although diffusion models are rising as a powerful solution for blind face restoration, they are criticized for two problems: 1) slow training and inference speed, and 2) failure in preserving identity and recovering fine-grained facial details. In this work, we propose WaveFace to solve the problems in the frequency domain, where low- and high-frequency components decomposed by wavelet transformation are considered individually to maximize authenticity as well as efficiency. The diffusion model is applied to recover the low-frequency component only, which presents general information of the original image but 1/16 in size. To preserve the original identity, the generation is conditioned on the low-frequency component of low-quality images at each denoising step. Meanwhile, high-frequency components at multiple decomposition levels are handled by a unified network, which recovers complex facial details in a single step. Evaluations on four benchmark datasets show that: 1) WaveFace outperforms state-of-the-art methods in authenticity, especially in terms of identity preservation, and 2) authentic images are restored with the efficiency 10x faster than existing diffusion model-based BFR methods.<|reference_end|>
@article{miao2024waveface:,
    title={WaveFace: Authentic Face Restoration with Efficient Frequency Recovery},
    author={Yunqi Miao, Jiankang Deng, Jungong Han},
    journal={arXiv preprint arXiv:2403.12760},
    year={2024},
    archivePrefix={arXiv},
    eprint={2403.12760},
    primaryClass={cs.CV}
}