Inverse Wavelet Transform (boundary corrected)
x = IWT_CDJV(wc,L,N)
1-d wavelet transform
Level of V_0; L << J
Degree of Daubechies Filters
1-d signal: length(y) = 2^J
This is an implementation of the Cohen-Daubechies-Jawerth-Vial Algorithm
for orthonormal wavelet bases of compact support, with boundary corrected
wavelets at 0 and 1.