CAJ | 학술논문

针对直接在图像压缩采样测量值上嵌入水印的方案对常规攻击和几何攻击鲁棒性差的问题，提出一种基于图像几何校正和分块压缩感知测量值奇异值分解（SVD）的鲁棒水印方案。对测量值的奇异值进行量化嵌入水印，并在水印检测前，用图像归一化技术对受到几何攻击的含水印图像进行几何校正，确保水印可以被正确提取。实验表明：该方法提高了水印对常规攻击和几何攻击的鲁棒性。
침대직접재도상압축채양측량치상감입수인적방안대상규공격화궤하공격로봉성차적문제，제출일충기우도상궤하교정화분괴압축감지측량치기이치분해（SVD）적로봉수인방안。대측량치적기이치진행양화감입수인，병재수인검측전，용도상귀일화기술대수도궤하공격적함수인도상진행궤하교정，학보수인가이피정학제취。실험표명：해방법제고료수인대상규공격화궤하공격적로봉성。
It will lead to the poor robustness when the watermark is directly embedded into the compressive sampling measurements.To solve this problem,a robust digital watermarking algorithm based on image geometric correction and singular value decomposition (SVD)of block compressive sampling measurements is proposed in this paper.The water-mark is embedded into the singular values of the image in compressive sampling transform domain.Meanwhile,the water-marked image under geometric attacks is corrected using the image normalization technique.After geometric correction, the watermark can be correctly extracted.Experimental results have shown that the proposed algorithm achieves the bet-ter robustness to common attacks and geometric attacks.