基于多对非对称直方图修改的可逆信息隐藏

The traditional image reversible information hiding algorithms based on asymmetric histogram modification have the problem of a large number of ineffective pixel modifications. Aiming at this problem, a reversible information hiding scheme based on multiple pairs of asymmetric prediction error histogram modification is proposed. This scheme combines the advantages of the asymmetric histogram modification algorithm and the characteristics of the multi-histogram modification algorithm, and selects the smooth regions of the image for asymmetric histogram modification to embed information. While achieving the compensation and restoration effect of the asymmetric histogram, it can further reduce the amount of ineffective pixel modifications and improve the rate-distortion performance.

传统基于非对称直方图修改的图像可逆信息隐藏算法存在大量像素无效修改的问题。针对此问题,提出了一种基于多对非对称预测误差直方图修改的可逆信息隐藏方案。该方案结合了非对称直方图修改算法的优势和多直方图修改算法的特点,选择图像的平滑区域进行非对称直方图修改以嵌入信息。在达到发挥非对称直方图补偿还原效应的同时,能进一步减少像素的无效修改量,提高率失真性能。