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Wavelet packet coefficients thresholding




wpthcoef is a one- or two-dimensional de-noising and compression utility.

NT = wpthcoef(T,KEEPAPP,SORH,THR) returns a new wavelet packet tree NT obtained from the wavelet packet tree T by coefficients thresholding.

If KEEPAPP = 1, approximation coefficients are not thresholded; otherwise, they can be thresholded.

If SORH = 's', soft thresholding is applied; if SORH = 'h', hard thresholding is applied (see wthresh for more information).

THR is the threshold value.

Introduced before R2006a