基于双域变换的鲁棒可逆信息隐藏算法研究

Study of Robust-Reversible Data Hiding Algorithm Based on Image Dual-Domain Transformation

以鲁棒可逆水印为研究对象,分别基于图像空域、整数小波域设计隐藏方案,利用图像分块技术划分圆心面和矩形子块,并嵌入鲁棒水印,保障在有损传输环境中水印的抗攻击能力;采用直方图平移技术嵌入脆弱信息,解决图像溢出等边信息问题,保证无损传输环境下图像的可逆性。试验结果表明,在同等可嵌入量的条件下,本方案在多类型图像攻击环境中,水印的鲁棒性、图像的视觉效果优于其他同类方案。

Taking robust reversible watermarks as the research object,a novel information hiding scheme based on spatial and transform domain is proposed.Image blocking technology is used to divide the host image into a circle and sub-blocks for embedding robust watermarks under lossy environment.The side information such as overflow coordinate,which is hidden as fragile information by histogram shifting,can ensure the reversibility of host under non-destructive condition.It turns out that,the robustness and vi⁃sual quality are superior to others with the same capacity of watermarks in different image attack environ⁃ment.