Watermark Constructing Method Based on Host Signal
Zhengming Hu · Beijing Youdian Xueyuan xuebao · 2004
According to the linear prediction theory, a host signal-based watermark construction method used with the noise shaping characteristic of linear prediction filter was presented. The theoretical analysis shows that the envelope of watermark signals was similar to that of the host signals, after which it was verified by experiments. So that we get a conclusion: the work we have done on watermark has strong imperceptibility and robustness.