This function computes the support of the (discrete) dual wavelet functions,
% i.e. the first and last non-zero entry of the forward wavelet transform-This function computes the support of the (discrete) dual wavelet functions, ie the first and last non-zero entry of the forward wavelet transform
小波变换程序源代码,可以处理一维数据和二维图像数据。通过小波变换将低频信息提取出来。-wavelet transform source code, can handle data and one-dimensional two-dimensional image data. Through the wavelet transform to low-frequency information is extracted.