Extract wavelet tree from wavelet packet tree
T = wp2wtree(T)
wp2wtree is a one- or two-dimensional wavelet packet analysis function.
T = wp2wtree(T) computes the modified wavelet packet tree T corresponding to the wavelet decomposition tree.
% The current extension mode is zero-padding (see dwtmode). % Load signal. load noisdopp; x = noisdopp; % Decompose x at depth 3 with db1 wavelet packets % using shannon entropy. wpt = wpdec(x,3,'db1'); % Plot wavelet packet tree wpt. plot(wpt)
% Compute wavelet tree. wt = wp2wtree(wpt); % Plot wavelet tree wt. plot(wt)