Reversible image watermarking on prediction errors by efficient histogram modification
Reversible image watermarking on prediction errors by efficient histogram modification
复制标题
通过有效的直方图修改对预测误差进行可逆图像水印
DOI：
10.1016/j.sigpro.2012.05.034
复制
发表时间：
2012-12-01
影响因子：
4.4
通讯作者：
Huang, Jiwu
中科院分区：
文献类型：
--
作者：
Wu, Hao-Tian;Huang, Jiwu
提出了一种可逆的数据隐藏算法，该算法考虑了修改一对直方图块的效率。可以进一步选择多对直方图箱按顺序进行数据嵌入，同时对像素值进行预处理以防止可能的上溢和下溢。利用一种新的预测方案研究了嵌入预测误差的问题。在四种预测模式中的每一种模式中，主机图像都会产生大量的预测误差。此外，为了获得最佳性能，列举了生成多个直方图对的四种模式的所有组合。通过将预先计算的位置地图和其他开销信息嵌入到带水印的图像中，实现了盲提取和恢复。在各种测试图像上都得到了令人满意的实验结果。与现有算法相比，在高有效载荷的数据隐藏中，图像内容得到了更好的保护。(C)2012爱思唯尔B.V.保留所有权利。
A reversible data hiding algorithm is proposed, in which the efficiency of modifying a pair of histogram bins is considered. Multiple pairs of histogram bins can be further selected for data embedding in sequence, while pre-process of pixel values is performed to prevent the possible overflow and underflow. Embedding with the prediction errors is investigated with a new prediction scheme. In each of the four prediction modes, a large amount of prediction errors can be produced from the host image. Moreover, all combinations of the four modes to generate a number of histogram pairs are enumerated to obtain the best performance. Blind extraction and recovery are enabled by embedding a pre-computed location map and other overhead information into the watermarked image. Promising experimental results are obtained on a variety of test images. Compared with the existing algorithms, the image content is better preserved in high payload data hiding. (C) 2012 Elsevier B.V. All rights reserved.