2-band discrete wavelet transform (DWT) Dual-Tree Complex Wavelet Packet-The 2-band discrete wavelet transform (DWT) provides an octave-band analysis in the frequency domain, but this might not be ‘optimal’ for a given signal. The discrete wave

这是二维离散小波变换程序，里面附带程序说明，及实例讲解。-This is a two-dimensional discrete wavelet transform, which comes with the program instructions and examples to explain.