基于图像内容的鲁棒可逆水印技术研究

项目名称： 基于图像内容的鲁棒可逆水印技术研究

项目编号： No.61202391

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 计算机科学学科

项目作者： 王祥

作者单位： 西安电子科技大学

项目金额： 24万元

中文摘要： 鲁棒性是数字水印技术能否实际应用的一个至关重要问题。虽然用于敏感图像权属认证的可逆数字水印技术已经得到了广泛关注，但鲁棒性的不足限制了其商业化推广应用。为此，本项目重点研究可逆数字水印的鲁棒性问题，针对图像处理过程中常见的几何失真和质量失真，基于图像内容特征，探求更稳定的可逆的嵌入域和嵌入位置。研究内容包括：1）通过提取图像更深层次的统计特征，从多个不同的角度得到图像内容的不同描述形式，进而寻求可抵抗几何失真的可逆水印嵌入域；2）研究在该嵌入域下基于整数变换的自适应嵌入方法，通过动态地调整嵌入强度和嵌入位置以抵抗质量失真；3）通过分析嵌入域和整数变换的依赖关系，消除其重叠交叉的共性问题，并结合人眼视觉特性，提出新型鲁棒可逆数字水印方案，可同时抵御质量失真和几何失真。本项目的完成将为进一步提高可逆数字水印的鲁棒性提供新思路和理论基础，且项目的成果将直接面向应用。

中文关键词： 数字水印；可逆水印；鲁棒水印；鲁棒可逆水印；

英文摘要： Robustness is the most important issue in the practical application of the watermarking technique. The reversible watermarking technique used for sensitive image authentication has attracted great interests in academia, but the lack of robustness limits its widely application. This project focuses on the robustness problem of the reversible watermarking. In addition, in order to effectively resist the geometric distortions and the quality distortion which are common in image processing, this project tries to find the robust embedding area and the robust embedding position for reversible watermarking based on the image content. Firstly, by extracting the deeper statistical features of the host image, this project will generate various descriptions of the image content from different analysis angles, and then find the embedding area that can resist the geometric distortions. Secondly, this project will propose an adaptive integer transform method, which is able to resist the quality distortion by adjusting the embedding strength and embedding position adaptively. Finally, this project will solve the overlapping problems by analysing the dependence between the embedding area and the integer transform. Furthermore,with considering the human visual system (HVS), this project will propose a novel robust watermarking a

英文关键词： digital watermarking；reversible watermarking；robust watermarking；robust reversible watermarking；