AIRPNet: Adaptive Image Restoration With Privacy Protection in Steganographic Domain

Summary

AIRPNet is a proposed network that performs image restoration inside the steganographic domain, so the secret image stays hidden throughout processing and user privacy is protected. It uses a wavelet lifting-based Adaptive Invertible Hiding module to conceal a low-quality secret image in a stego image, and an adaptive secure restoration module to handle multiple degradations, then extracts a high-quality secret image. The authors report that it outperforms existing methods on restoration accuracy, invisibility and security across various datasets and tasks.