CAJ | 학술논문

　　为了更好对数字图像版权进行保护，提高数字水印的鲁棒性，以图像归一化技术为基础，提出一种可有效抵抗几何攻击的数字水印新算法。算法利用图像归一化和不变质心理论，通过对原始图像和攻击后的图像的归一化处理，使水印和图像在嵌入与提取过程保证同步，实验结果表明，该算法具有较强的抵抗几何攻击的能力，提高了数字水印抗几何攻击的鲁棒性。嵌入的水印容量较大且水印图像的质量也较高。
　　위료경호대수자도상판권진행보호，제고수자수인적로봉성，이도상귀일화기술위기출，제출일충가유효저항궤하공격적수자수인신산법。산법이용도상귀일화화불변질심이론，통과대원시도상화공격후적도상적귀일화처리，사수인화도상재감입여제취과정보증동보，실험결과표명，해산법구유교강적저항궤하공격적능력，제고료수자수인항궤하공격적로봉성。감입적수인용량교대차수인도상적질량야교고。
In order to better protect the copyright of digital image,to improve the robustness of digital watermarking,image normalization theory as the foundation,proposed a new digital watermarking algorithm can effectively resist geometric attacks.Algorithm using the normalization and invariant centroid theory,by normalizing the original image and the image after the attack,the watermark and image synchronization guarantee in the process of embedding and extracting,the experimental results show that,the algorithm has the ability to resist geometric attacks stronger,improve the robustness of watermarking against geometric attacks.The embedded watermark capacity is large and the quality of the watermarked image is also higher