【作者】 赵健； 周欣； 周明全；

【Author】 ZHAO Jian, ZHOU Xin, ZHOU Ming-quan(School of Information Science,Northwest University,Xi’an 710069,China)

【机构】 西北大学信息科学与技术学院；

【摘要】 研究如何提高数字水印的稳健性和不可预测性问题,在针对通常数字水印应用中水印容易被破坏的现实情况,提出了利用多种非线性科学技术结合使用来提高其抗干扰能力.通过对现有的各种非线性技术数字水印现状进行研究分析,并进一步将仿真实验结果进行比较,得到非线性科学技术由于其本身的所具有的不可预测性、复杂性等原因,从而对提高数字水印的稳健性和不可预测性有着其它方法难以比拟的优点.该方法既适用于图象数字水印,也适用于音频数字水印,仿真结果证实了该方法的有效性.更多还原

【Abstract】 The digital watermark technology in real applications often shows the problem of instability and non-determinability. For example, the watermark is easily to be destroyed usually. This problem by combining several nonlinear technologies to improve the stability of digital watermark was analyzed. A number of existing nonlinear-based digital watermark technologies was compared. It is concluded that nonlinear technology is superior to other methods for increasing the stability and determinability of digital watermark, due to its own non-determinability and complexity. The proposed method can be applicable for both image watermark and audio watermark. The simulation results demonstrate its effectiveness.更多还原