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iCAPs/packages/gspbox/stationarity/gsp_design_translates.m
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gsp_design_translates.m
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function [ g , mu ] = gsp_design_translates(G, g0,N )
%GSP_DESIGN_TRANSLATES Create a filterbank by uniformly translating a window
% Usage: g = gsp_design_translates( G, g0, Ntrans );
%
% Inputs parameters:
% G : Graph structure
% g0 : Mother window (anonymous function)
% N : Number of translate
%
% Outputs parameters:
% g : filterbank
% mu : Centers of the filters
%
% This function construct a filter bank of N uniformly translated
% filter from the mother filter g0.
%
%
% Url: http://lts2research.epfl.ch/gsp/doc/stationarity/gsp_design_translates.php
% Copyright (C) 2013-2016 Nathanael Perraudin, Johan Paratte, David I Shuman.
% This file is part of GSPbox version 0.7.0
%
% This program is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program. If not, see <http://www.gnu.org/licenses/>.
% If you use this toolbox please kindly cite
% N. Perraudin, J. Paratte, D. Shuman, V. Kalofolias, P. Vandergheynst,
% and D. K. Hammond. GSPBOX: A toolbox for signal processing on graphs.
% ArXiv e-prints, Aug. 2014.
% http://arxiv.org/abs/1408.5781
% Author : Nathanael Perraudin
% Date: 6 January 2016
if isstruct(G)
if ~isfield(G,'lmax')
if param.verbose
fprintf('GSP_DESIGN_TRANSLATE has to compute lmax \n')
end
G = gsp_estimate_lmax(G);
end
lmax = G.lmax;
else
lmax = G;
end
mu = linspace(0,lmax,N);
g = cell(length(mu),1);
for ii = 1:length(mu)
g{ii} = @(x) g0(x-mu(ii));
end
end
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