Wavelet packet coefficients thresholding
NT = wpthcoef(
wpthcoef is a one- or
two-dimensional de-noising and compression utility.
NT = wpthcoef( returns
a new wavelet packet tree
NT obtained from the
wavelet packet tree
T by coefficients thresholding.
KEEPAPP = 1, approximation coefficients
are not thresholded; otherwise, they can be thresholded.
's', soft thresholding
is applied; if
SORH = 'h', hard thresholding is
wthresh for more
THR is the threshold value.