基于图像插值技术的可逆数据隐藏算法

针对现有基于插值技术可逆数据隐藏算法具有较高的隐藏容量,但隐秘图像质量不是很高问题的问题,提出一种新的大容量图像可逆数据隐藏算法。首先对输入图像进行插值处理生成载体图像,然后对载体图像进行重叠分块并计算分块中每一个非基准像素能隐藏的数据量,最后采用自适应的方法隐藏秘密数据。在Kodak图像集上的实验结果表明,本文算法能完整地提取隐藏的秘密数据和不会出现像素溢出现象；与相似的算法相比,该算法的秘密数据隐藏容量平均提升了约98%,隐秘图像质量平均提升了约6%。

Reversible Data Hiding Algorithm Based on Interpolation technology

For the existing reversible data hiding algorithm based on interpolation technology has large capacity, but the hidden image quality is not very good, an improved large capacity image reversible data hiding algorithm is proposed. First, the input image is interpolated to generate a cover image, and then the cover image is overlapped and calculates the amount of data that can be hidden by each non-reference pixel in each block. Finally, an adaptive method is used to hide the secret data. The proposed algorithm was test on Kodak image database and the results show that it can completely extract hidden secret data and no pixel overflow phenomenon. Compared with similar algorithms, the hiding capacity of secret data is improved by about 98% and the quality of the hidden image is improved by about 6% on average.