gsp_pyramid_cell2coeff.m
2cb18aae5832master

gsp_pyramid_cell2coeff.m
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			function coeff = gsp_pyramid_cell2coeff(ca,pe)
			%GSP_PYRAMID_CELL2COEFF Cell array to vector transform for the pyramid
			% Usage: coeff = gsp_pyramid_cell2coeff(ca,pe);
			%
			% Input parameters:
			% ca : Cell array with the coarse approximation at each level
			% pe : Cell array with the prediction errors at each level
			% Output parameters:
			% coeff : Vector of coefficient
			%
			% This function compress the cell array ca and pe into a single
			% vector of coefficients. It keeps the smaller coarse approximation and
			% the prediction errors.
			%
			% Example:
			%
			% [ca,pe] = gsp_pyramid_analysis(Gs, f);
			% coeff = gsp_pyramid_cell2coeff(ca,pe);
			%
			% See also: gsp_pyramid_analysis gsp_pyramid_synthesis
			% gsp_graph_multiresolution
			%
			% Demo: gsp_demo_pyramid
			%
			%
			% Url: http://lts2research.epfl.ch/gsp/doc/operators/gsp_pyramid_cell2coeff.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 : 5 Aout 2014
			% Testing : test_pyramid

			Nl = length(ca) - 1;

			N = 0;
			for ii = 1 : (Nl+1)
			N = N+length(ca{ii});
			end

			Nv = size(ca{Nl}, 2);
			coeff = zeros(N,Nv);

			Nt = length(ca{Nl+1});
			coeff(1:Nt, :) = ca{Nl+1};

			ind = Nt+1;
			for ii = 1 : Nl
			Nt = length(ca{Nl+1-ii});
			coeff(ind:(ind+Nt-1), :) = pe{Nl+1-ii};
			ind = ind + Nt;
			end

			if (ind-1) ~= N
			error('Something is wrong here: contact the gspbox team')
			end

			end

iCAPs/packages/gspbox/operators/gsp_pyramid_cell2coeff.m2cb18aae5832master

gsp_pyramid_cell2coeff.mView Options

iCAPs/packages/gspbox/operators/gsp_pyramid_cell2coeff.m
2cb18aae5832master

gsp_pyramid_cell2coeff.m
View Options