Wavelet Packet decomposition over 3 levels. From the point of view of compression, the standard wavelet transform may not produce the best result, since it is limited to wavelet bases that increase by a power wavelet transform matlab code pdf two towards the low frequencies.
It could be that another combination of bases produce a more desirable representation for a particular signal. In contrast, the discrete subband transform theory provides a perfect representation of discrete signals. Wavelet packets were successfully applied in preclinical diagnosis. Optical Engineering Journal, special issue Visual Communications and Image Processing, vol. SPIE Visual Communications and Image Processing, vol. Multiresolution Signal Decomposition: Transforms, Subbands, and Wavelets.