FTWT2_PO | R Documentation |
A two-dimensional Wavelet Transform is computed for the array x.
qmf
filter may be obtained from MakeONFilter
.
To reconstruct, use ITWT2_PO
.
FTWT2_PO(x, L, qmf)
x |
2-d image (n by n array, n dyadic). |
L |
coarse level. |
qmf |
quadrature mirror filter. |
wc
2-d wavelet transform.
ITWT2_PO
, MakeONFilter
.
qmf <- MakeONFilter('Daubechies', 10)
L <- 0
x <- matrix(rnorm(2^2), ncol=2)
wc <- FTWT2_PO(x, L, qmf)
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