2-D 多级非标准小波分解程序：输入X是要求分解的二维信号，wavename 是用来做分解的小波名称，与matlab的wavename定义一致 N 为分解级数-2-D multi-level wavelet decomposition of non-standard procedures: input X is to require two-dimensional signal decomposition, wavename is used to make the wavelet decompo