CAJ | 학술논문

为了提高水印鲁棒性、容量以及透明性,提出了利用图像位平面合成实现的一种新的水印技术.在此技术中,经离散多小波变换(DMWT)变换后,载体图像和指纹图像分别被分解成不同的位平面.借助于图像子带系数在位平面的排列顺序,这种方法通过位平面合成可自适应地把指纹数据嵌入到小波子带系数中.结果表明,在不同条件压缩攻击下,方法达到了不可见性和鲁棒性的一种折中.
위료제고수인로봉성、용량이급투명성,제출료이용도상위평면합성실현적일충신적수인기술.재차기술중,경리산다소파변환(DMWT)변환후,재체도상화지문도상분별피분해성불동적위평면.차조우도상자대계수재위평면적배렬순서,저충방법통과위평면합성가자괄응지파지문수거감입도소파자대계수중.결과표명,재불동조건압축공격하,방법체도료불가견성화로봉성적일충절중.
To enhanced robustness and capacity as well as maintains of image transparency of the watermark, a novel watermarking technique combination bit plane is proposed. In this method, carrier image and fingerprint image are decomposed into bit planes after discrete multiwavelet transform(DMWT), respectively. By means of the ranked bit-stream of the image sub-band coefficients using the bit planes combination, the method may adaptively embed hidden fingerprint data into wavelet sub-band coefficients. Experimentation results shows that the algorithm achieves better tradeoff between invisibility and robustness in various Conditional compression.