计算机应用与软件Issue(1)：303-307,5.DOI:10.3969/j.issn.1000-386x.2014.01.082
一种基于差值直方图平移的多层可逆水印算法
A MULTILEVEL REVERSIBLE WATERMARKING SCHEME BASED ON DIFFERENCE HISTOGRAM SHIFTING
摘要
Abstract
A multilevel reversible watermarking scheme based on difference histogram shifting is proposed.First the image is divided into blocks,in each block there are two difference values generated,then the histogram of all difference values is built,which makes the genera-ted histogram steep and has higher chance to find the peak points.Finally with the idea of matrix encoding,the pixel value in each image block is modified no more than one,we reach the goal of embedding the watermark and shifting the histogram simultaneously.Experiments show that this algorithm can realise reversible watermark,furthermore,the invisibility of watermark is much better.The PSNR is greater than 52.90 db in the image with watermark embedded,the embedding capacity is higher,and the complexity of algorithm computation is lower as well.关键词
可逆水印/直方图平移/多层Key words
Reversible watermarking/Histogram shifting/Multilevel分类
信息技术与安全科学引用本文复制引用
刘芳,汪玉凯..一种基于差值直方图平移的多层可逆水印算法[J].计算机应用与软件,2014,(1):303-307,5.基金项目
国家自然科学基金项目（61070250）。 （）
