基于频域的数字水印算法误差分析

Error Analysis of Digital Watermarking Algorithm Based on Frequency Domain

由于数字图像的很多水印技术能够推广适用于其它媒体,因此目前针对数字图像的水印技术研究是信息安全领域的重要研究课题。提出一种基于频域的数字水印算法误差分析,通过数值计算表达式来建立水印嵌入参数(如嵌入强度等)和图像质量的关系,使水印算法能自行确定最佳的水印嵌入能量或强度。

Most of the digital image watermarking technology can be generalized and applied to other medium,therefore the research on digital image watermarking technology has been an important researched problem in information security field at present.Combining the existing research,an error analysis of digital watermarking algorithm based on frequency domain is advanced,build the relationship between watermarking embedded parameters and image quality via numerical value calculate expression,make the watermarking algorithm fix on the best watermarking embedded energy or intensity by itself.