Then, multifractal analysis is performed for low frequency sub-band. The multifractal spectrum is used as the characteristic parameters to filter pixels which mark different scenery.

然后对低频子带进行多重分形特性分析，再将多重分形谱作为特征参量进行像素筛选，筛选出标志不同景物的像素点。

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In low frequency sub band, the watermarking is embedded into host by the way of pixel-to-pixel embedding according to HVS model.

在低频分量部分，基于HVS视觉模型，将水印信号逐点变化地嵌入到原始图像中；

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