CycleGAN-RRW: Blind Reversible Image Watermarking via Cycle-Consistent Adversarial Feature Encoding for Secure Image Ownership Authentication

This advanced research describes CycleGAN-RRW, a new reversible watermarking system for secure image ownership authentication. It uses Cycle-Consistent Generative Adversarial Networks with adaptive feature encoding. In areas such as law, forensics, and telemedicine, digital images usually contain private info that may be changed or used without authorization. Existing watermarking methods may decrease image quality, may not be reversible, or need outside keys. To address these problems, our model embeds metadata into intermediate feature maps with Adaptive Instance Normalization (AdaIN), based on adversarial and perceptual loss. The dual-generator design permits two-way translation between original and watermarked images, with pixel-level reversibility and semantic integrity. Key aims include blind watermark verification, eliminating side-channel dependency, and resisting distortions such as compression and noise. We tested our approach on the DIV2K and USC-SIPI Miscellaneous datasets, which showed acceptable watermark fidelity and reconstruction accuracy. The model achieved a Peak Signal-to-Noise Ratio (PSNR) of over 42 dB, a Structural Similarity Index (SSIM) above 0.98, and a Bit Error Rate (BER) below 1.5% when subjected to typical attacks like JPEG compression (Q ≥ 60) and Gaussian noise (σ = 5). The system permits watermark recovery and tamper detection without outside keys, with an ownership verification accuracy of 98.63%. The CycleGAN-RRW method is a self-contained, blind, and legally defensible watermarking solution with real-time inference and may be applied to other fields like forensic imaging and tele-health.