Separable Reversible Data Hiding in Encryption Image with Two-Tuples Coding

Separable Reversible Data Hiding in Encryption Image (RDH-EI) has become widely used clinical and military applications, social cloud security surveillance recent years, contributing significantly to preserving the privacy of digital images. Aiming address shortcomings works that directed achieve high embedding rate by compensating image quality, security, reversible separable properties, we propose a two-tuples coding method considering intrinsic adjacent pixels characteristics carrier image, which have redundancy between high-order bits. Subsequently, construct RDH-EI scheme using bits compression, low-order combination, vacancy filling, data pixel diffusion. Unlike conventional practices, suffered from deterioration original while additional data, content owner our generates embeddable space advance, thus lessening risk destruction on hider side. The experimental results indicate effectiveness scheme. A ratio 28.91% effectively compressed images, increased 1.753 bpp with higher measured PSNR 45.76 dB.