FWT2_TI {rwavelet} | R Documentation |
2-d Translation Invariant Forward Wavelet Transform
Description
1. qmf
filter may be obtained from MakeONFilter
.
2. usually, length(qmf) < 2^(L+1)
.
3. To reconstruct use IWT_TI
.
Usage
FWT2_TI(x, L, qmf)
Arguments
x |
2-d image (n by n real array, n dyadic). |
L |
degree of coarsest scale. |
qmf |
orthonormal quadrature mirror filter. |
Value
TIWT
translation-invariant wavelet transform table, (3(J-L)+1)n by n.
Examples
x <- matrix(rnorm(2^2), ncol=2)
L <- 0
qmf <- MakeONFilter('Haar')
TIWT <- FWT2_TI(x, L, qmf)
[Package rwavelet version 0.4.1 Index]