摘要： 提出一种能无失真地从水印图像中提取出隐藏信息并无失真地恢复出原始图像的可逆图像信息隐藏算法。该算法利用图像相邻像素之间差异较小的特性，通过差值矩阵对原始图像进行预处理，修改差值矩阵并映射到宿主图像中实现信息隐藏。理论分析和仿真实验表明，该算法在保证良好不可见性的情况下，有效提高了信息嵌入容量。

关键词: 信息隐藏, 可逆信息隐藏, 差值矩阵, 图像预处理

Abstract: This paper proposes a reversible information hiding algorithm which can recover the original image without any distortion from the marked image after the hidden information being extracted. It uses the property that the difference between adjacent pixels is always small and utilizes the difference matrix to do the original image preprocessing, amends and maps the margin matrix to the original image to realize information hiding. Theory analysis and simulation experiment prove that the algorithm enhances the payload while guaranteeing good invisibility.

Key words: information hiding, reversible information hiding, difference matrix, image preprocessing

中图分类号: 

• TP301.6