CAJ | 학술논문

数字水印技术是数字信息版权保护领域的一个热点.该文将离散小波变换应用于遥感影像,并基于MATLAB仿真实现了在遥感影像中的水印嵌入提取.进行了几种常见的攻击测试,并对实验结果进行了分析.实验证明离散小波变换算法实现的数字水印具有不可见性,对椒盐噪声等攻击具有一定的鲁棒性.
수자수인기술시수자신식판권보호영역적일개열점.해문장리산소파변환응용우요감영상,병기우MATLAB방진실현료재요감영상중적수인감입제취.진행료궤충상견적공격측시,병대실험결과진행료분석.실험증명리산소파변환산법실현적수자수인구유불가견성,대초염조성등공격구유일정적로봉성.
Digital Watermark technology is the most active topics in protection of digital information. In this paper, Discrete Wave-let Transform(DWT) is applied in a remote sensing image, and the embedding-watermark and extracted-watermark algorithms on the remote sensing image are simulated based on MATLAB. Some familiar attack tests are applied in the image that have embed-ded watermark, and the results are analyzed. Experiments have shown that the DWT algorithm proposed in this paper has good in-visibility. And it has a certain robustness against impulse noise, etc.