GPEN (Generative Prior Network) is a GAN-based model for blind face restoration (BFR). It restores old, blurry, low-quality, or degraded face images by leveraging the prior knowledge embedded in a pretrained StyleGAN2 generator.
# First restore with GPEN, then colorize separately. Use a separate upscaler (Real-ESRGAN) after GPEN: gpen bfr 2048