CAJ | 학술논문

提出了一种小渡包特征熵分解的自适应图像水印算法.该算法通过对宿主图像进行小波包特征熵分解,在高频系数中选取合适的阈值来区分高频系数中图像的纹理细节信息和噪声信息,将水印信息自适应地嵌入到高频系数当中.实验表明,该水印算法对噪声、JPEG2000压缩、滤波、改变对比度、几何剪切等攻击都具有一定的健壮性.
제출료일충소도포특정적분해적자괄응도상수인산법.해산법통과대숙주도상진행소파포특정적분해,재고빈계수중선취합괄적역치래구분고빈계수중도상적문리세절신식화조성신식,장수인신식자괄응지감입도고빈계수당중.실험표명,해수인산법대조성、JPEG2000압축、려파、개변대비도、궤하전절등공격도구유일정적건장성.
An adaptive image watermarking algorithm based on wavelet packet decomposition of characteristic entropy is pro- posed.After the host image is decomposed by the wavelet packet of characteristics entropy,the watermarking will be adaptively embedded in the high-frequency coefficients,which are distinguished between the image texture detail information and noise in-formation by a suitable threshold.The experiments show that the algorithm has a certain robastness to the attacks including noise,JPEG2000,filtcring,changing the contrast,and geometric cut,etc.