CAJ | 학술논문

提出了一种基Arnold变换和DCT算法的数字水印算法.利用Arnold变换将水印图像变成无意义的图像,再对载体图像做DCT变换,将变换后的水印图像隐藏在DCT系数上,最后进行DCT反变换完成水印的嵌入.实验结果表明,该算法对一般的图像攻击如滤波、噪声、剪裁有较好的鲁棒性.
제출료일충기Arnold변환화DCT산법적수자수인산법.이용Arnold변환장수인도상변성무의의적도상,재대재체도상주DCT변환,장변환후적수인도상은장재DCT계수상,최후진행DCT반변환완성수인적감입.실험결과표명,해산법대일반적도상공격여려파、조성、전재유교호적로봉성.
One kind of digital watermark algorithm is proposed based on Arnold transformation and discrete cosine transform algorithm (DCT).Watermark image transforms into meaningless image using Arnold transforma-tion.By DCT transform to host images, hidden transformed watermark images into DCT coefficients .Finish the processing of embed watermark by inverse discrete cosine transform .Experiment results show that it is robust a-gainst normal image attacks, such as filtering processing , adding noise and cutting processing .