Abstract:There are high requirements for the visual quality of the loaded image and the accuracy of the carrier image when information hiding technology is used to transmit information in some one-to-two communication scenarios. In this study, a reversible information hiding scheme of double images is proposed based on the modular function and the pixel value difference (PVD). The range table of the PVD is determined by the modular function and logarithm function, so as to determine the embedding bit of information per unit area and the coefficient of the modular function. The proposed scheme can keep the ratio of the modification amount of pixel value to the embedding bit of information no more than 0.5 even when the embedding bit of information keeps increasing. Therefore, compared with other schemes based on PVD, the proposed scheme has more advantages in the image with a larger difference of pixel pairs. The experimental results show that the scheme has higher PSNR and SSIM than some existing schemes in terms of the quality of the loaded image. In addition, the scheme has excellent performance against static attacks of RS steganography and PDH steganography, and it avoids the complicated solution of overflow problem in most information hiding schemes based on PVD.