Matching Pursuit using Wavelet Packet Dictionary with backfitting
atomic = WPPursuitBF(x,D,qmf,natom,frac)
signal of dyadic length to be decomposed
max # of atoms desired
min fraction total signal energy to enter
usual Wavelets Packets parameters
plot intermediate results? 0=no, 1=yes
parameters of atomic decomposition
norm of residuals from each step
Side Effects If show=1, intermediate results are plotted