将一个被小波包分解的矩阵变成小波结构，根据最高的分解层次，将原图3*level+1块分开赋给矩阵以便单独操作，按从上到下，从左到右的顺序-A matrix of wavelet packet decomposition into wavelet structure, according to the highest level of decomposition, the original 3* level+1 block separately assigned to the matrix in order to operate independently from top to bottom, from left to right order