FWTNhttp://mloss.orgUpdates and additions to FWTNenThu, 25 Mar 2010 16:58:24 -0000FWTN 1.0<html><p>The package includes a simple and standalone implementation of orthonormal wavelet transformations for D dimensional tensors in L levels. It is generic in the quadrature mirror filter, so any filter (Haar, Daubechies etc.) can be used. Runtime is O(n) with n being the number of elements of the tensor. The code is written in plain C (with inspirations from Wavelab); a Matlab/Octave mex wrapper as well as a demo example is provided. </p> <p>In Matlab, you simply type the following to perform the transformation. </p> <p>qmf = [1,1]/sqrt(2); % Haar Wavelet </p> <p>L = 3; % # Levels in the pyramid </p> <p>W = fwtn(X,L,qmf); % apply FWT, inverse: X = fwtn(W,L,qmf,1); </p></html>Hannes NickischThu, 25 Mar 2010 16:58:24 -0000