First of all, original image is divided into blocks, each subgraph for integer waveletdecomposition, and then the binary image after scrambling embedding.
首先将原始图像进行分块，逐一对每块子图进行整数小波分解，然后将置乱后的二值图像嵌入到低频系数。
2
The projective curves along the horizontal and vertical directions were obtained from the character images, and were approximated by using waveletdecomposition.
通过对字符图像水平和垂直两个方向的投影曲线分别进行小波分解，得到投影曲线的近似表示。
3
It is then subject to such mathematical indignities as waveletdecomposition, multi-resolution Fourier analysis, polyphase filtering and discrete cosine transformation.