一种基于关联伪随机序列的数字水印镶嵌与检测技术

AN ASSOCIATED PSEUDORANDOM SEQUENCES TECHNIQUE FOR DIGITAL WATERMARK EMBEDDING AND DETECTION

用一种伪随机序列方法 ,对需要版权保护的数字多媒体作品进行防伪水印的镶嵌与检测研究 .这种随机序列方法 ,使嵌入到作品中的水印信息与嵌入位置相关联 ,不易被人为攻击 .在水印检测中使用协方差方法 ,尽可能地减小了原数据或噪声对水印检测的影响 .作者讨论了这种水印的隐形性、稳健性等 ,具有较好的效果 ,因而具有广泛的应用领域及可靠性 .

An associated pseudorandom sequences technique, which is used in encryption watermark embedding and detecting, is researched for multimedia copyright protection. It makes the embedded data associate with the embedded position, so the watermark is not easy to be attacked. Covariance is used to detect watermark, which may reduce the influence of initial data or chaos in partially. The discussion of the watermark’s hidden ability and robustness shows that this technique has satisfied result, so it can be widely used.