基于图像块动态参照像素的无损信息隐藏算法

A Lossless Data Hiding Based on Dynamic Reference Pixel of Image Block

提出了一种基于动态参照像素和多层嵌入的图像无损信息隐藏方法,其能在保持较小图像失真的同时,实现大容量的信息嵌入,且机密信息提取后能完全恢复原载体图像。特别地,与其他基于直方图移位的算法不同,本文方法提取机密信息和恢复载体图像不需要除机密信息长度之外的任何其他信息。实验结果表明了该算法的有效性。

This paper presents a reversible data hiding scheme based on dynamic reference pixel and multi-layer embedding. The proposed algorithm can offer very high embedding capacity and low image degradation, and the exact original cover image can be fully restored after the hidden data extracted without any error. Especially, different from previous works based on histogram shifting, the proposed scheme can recover the original cover image after data extraction with no extra information except the message length and the stego-image itself. Experiments have been conducted to show the effectiveness of the proposed method.