一种数字图像和指纹水印位平面合成的优化方法(英文)

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。

An Optimum Method Research Based on Bit Plane Combination of Digital Image and Fingerprint Watermarking

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.