微型机与应用
微型機與應用
미형궤여응용
Microcomputer & its Applications
2015年
16期
46-48
,共3页
图像水印%DCT 变换%自适应%Logistic 映射
圖像水印%DCT 變換%自適應%Logistic 映射
도상수인%DCT 변환%자괄응%Logistic 영사
image watermarking%DCT transformation%adaptively%Logistic map
提出了一种基于 DCT 变换的数字水印算法，该方法能够自适应地选取水印嵌入位置，依据人类视觉特性，合理地分配不同嵌入位置处嵌入的水印强度。另外，结合混沌序列和置乱技术，增强了水印的抗攻击能力。经实验验证，该方法基本上满足不可见性和鲁棒性要求，尤其具有较强的抗 JPEG 压缩攻击的能力。
提齣瞭一種基于 DCT 變換的數字水印算法，該方法能夠自適應地選取水印嵌入位置，依據人類視覺特性，閤理地分配不同嵌入位置處嵌入的水印彊度。另外，結閤混沌序列和置亂技術，增彊瞭水印的抗攻擊能力。經實驗驗證，該方法基本上滿足不可見性和魯棒性要求，尤其具有較彊的抗 JPEG 壓縮攻擊的能力。
제출료일충기우 DCT 변환적수자수인산법，해방법능구자괄응지선취수인감입위치，의거인류시각특성，합리지분배불동감입위치처감입적수인강도。령외，결합혼돈서렬화치란기술，증강료수인적항공격능력。경실험험증，해방법기본상만족불가견성화로봉성요구，우기구유교강적항 JPEG 압축공격적능력。
The article proposes a digital watermarking algorithm based on DCT transform. The method can adaptively select the watermark embedding position. According to human visual properties, it also reasonably allocates the watermark embedding strength in the different position. In addition, the combination of chaotic sequence and scrambling technology enhances the attackde ability. Verified by the experiment, the method basically meets the demand of invisibility and robustness, and especially has stronger ability to resist JPEG compression attack.
