模型基于噪声可见性函数(NVF)的计算来决定水印嵌入强度，使水印更多的嵌入到图像的纹理和边缘区域。
The HVS model is based on the computation of the noise visibility function (NVF) and embed at the texture and edge region stronger embedded watermarks.
利用正交化分形解码参数在迭代过程中的不变性，使水印直接嵌入解码参数，从而实现了灰度水印嵌入。
Just because the orthogonal fractal decoding is a mean-invariant iteration, the watermark can be embedded into the fractal decoding parameters directly.
此外，该算法在确保一定的嵌入容量的情况下，能够使视频流长度在信息嵌入前后保持近似不变。
Furthermore, the algorithm has a considerable embedding capacity, and can keep the nearly invariant size of video stream.
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