摘要
针对作为版权保护的数字水印技术存在的问题,根据彩色图像的特点,通过对数字水印算法的分析,利用Arnold置乱和归一化方法对水印图像进行预处理,使水印图像更适合于嵌入需要.在嵌入过程中,利用DCT变换、局部复杂度因子、灰度均值和嵌入能量等处理方法,使得嵌入算法能够更好地均衡水印不可见性和鲁棒性之间的矛盾.模拟结果表明,实现了将大信息量的彩色水印嵌入到彩色图像中的水印技术,达到了不可见性和鲁棒性之间的均衡.
For the existing problems of digital watermark technique used in copyright protection, a double color image watermark research scheme was designed. The algorithm used the Arnold scrambling and normalization methods for pretreatment, which makes watermark image more suitable for embedded need. In the embedding processing, a series of processing techniques such as ~ transformation, partial complexity factor, gray average and embedding energy were employed to realize better balance between watermark invisibility and robustness. The simulation results show that the color watermark with massive information can embed in color image by the algorithm, and the effect is satisfactory.
出处
《沈阳工业大学学报》
EI
CAS
2008年第5期572-575,共4页
Journal of Shenyang University of Technology
关键词
彩色图像
不可见性
鲁棒性
置乱
能量
color image
invisibility
robustness
scrambling
energy
