CAJ | 학술논문

提出了一种基于时域混合的盲数字水印新算法。该算法一改传统水印的嵌入过程，首先对载体图像进行分块，利用最佳信号与载体图像进行时域混合以改变图像信息的分布，之后通过离散小波变换结合奇异值分解完成水印嵌入，再进行时域混合恢复得到嵌入水印的图像。进行各种攻击测试，并与传统DWT-SVD数字水印算法进行比较。实验结果表明，时域混合算法具有很好的隐蔽性和鲁棒性。
제출료일충기우시역혼합적맹수자수인신산법。해산법일개전통수인적감입과정，수선대재체도상진행분괴，이용최가신호여재체도상진행시역혼합이개변도상신식적분포，지후통과리산소파변환결합기이치분해완성수인감입，재진행시역혼합회복득도감입수인적도상。진행각충공격측시，병여전통DWT-SVD수자수인산법진행비교。실험결과표명，시역혼합산법구유흔호적은폐성화로봉성。
A new blind digital watermarking algorithm based on the mix of time-domain is proposed. This algorithm changes the traditional watermark embedding process. Firstly, the host image is separated into different blocks, and the perfect signals are used to finish the mix of time-domain on the host image, which changes the distribution of image information. Then, the embedding process is completed on frequency-domain, which is discrete wavelet transform with singular value decomposition, and restore the mix of time-domain to get the image with watermark. Attack tests and comparison with traditional DWT-SVD image watermarking algorithm are carried out. The results show that the image watermarking algorithm based on the mix of time-domain has good imperceptibility and robustness.