基于复动力系统迭代序列的DCT域盲水印算法

A Blind Watermarking Algorithm in DCT Domain based on Iterative Sequences of Complex Dynamical Systems

针对复动力系统的分形集合产生无规则数据的原理,介绍了一种在复数范围内进行迭代运算,将得到的复数序列进行编码,并利用此编码生成水印,然后在DCT域嵌入水印的算法。实验结果表明,该算法对诸如图像的二维中值滤波、锐化、马赛克、高斯噪声、JPEG压缩、剪切、喷洒颗粒、胶片颗粒、彩块化和增加其他水印等一些常见的图像处理都表现出了较好的健壮性。此项研究提供了一种保密性强的新型编码方式,并将其应用到了数字水印领域。

In view of principle which the Complex dynamic system creates the fractal set and this set has the non-regular data, introduced one algorithm which first calculating with iterative operation within the scope of complex number, then using the Complex number sequence to create the code, and making watermark with this code, finally inserting watermark in DCT Domain. The experimental result indicated that, this algorithm displayed the good toughness to some common image processing, such as the two--dimensional value filter, the peaking, the mosaic, the Gauss noise, the JPEG compression, cutting, sprayed the pellet, the film pellet, the color block and increases other watermarks and so on. This research has provided one secrecy strong new encoding method, and applied it in the digital watermark domain