Wavelet packet coefficients thresholding.
Syntax
NDATA = wpthcoef(DATA,TREE,KEEPAPP,SORH,THR)
Description
wpthcoef is a one- or two-dimensional de-noising and compression utility.
NDATA = wpthcoef(DATA,TREE,KEEPAPP,SORH,THR) returns a new data structure obtained from the wavelet packet decomposition structure
[DATA,TREE] (see maketree) by coefficients thresholding.
If KEEPAPP = 1, approximation coefficients are not thresholded, otherwise it is possible.
If SORH = 's', soft thresholding is applied, if SORH = 'h', hard thresholding is applied (see wthresh).
THR is the threshold value.
See Also
maketree, wpdec, wpdec2, wpdencmp, wthresh
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