IWT2_PO {rwavelet} | R Documentation |
If wc
is the result of a forward 2d wavelet transform, with wc <- FWT2_PO(x,L,qmf)
.
then x <- IWT2_PO(wc,L,qmf)
reconstructs x
exactly
qmf
is a nice qmf, e.g. one made by MakeONFilter
.
IWT2_PO(wc, L, qmf)
wc |
2-d wavelet transform (n by n array, n dyadic). |
L |
coarse level. |
qmf |
quadrature mirror filter. |
x
2-d signal reconstructed from wc.
qmf <- MakeONFilter('Daubechies', 10)
L <- 3
x <- matrix(rnorm(128^2),ncol=128)
wc <- FWT2_PO(x, L, qmf)
xr <- IWT2_PO(wc,L,qmf)