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Matlab

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%function_2
function C = recover(B, psf)
% function C = recover(B, psf)
% In input:
% B, matrice dellimmagine sfocata
% psf, matrice della PSF
% In output:
% C, matrice con limmagine restaurata
%RECOVER_GRADIENT
[m,n,~]=size(B);
% PSF "flippata", corrispondente alla moltiplicazione per % la matrice trasposta.
psfr = psf(end:-1:1,end:-1:1);
% Right hand side
b = B;
for j = 1 : size(b, 3)
b(:,:,j) = conv2(B(:,:,j), psfr, 'same');
end
% Operatore lineare PSF * PSF come funzione inline
function y = Op(x)
V=reshape(x,m,n,3);
for jj=1:3
V(:,:,jj) = conv2(conv2(V(:,:,jj), psf, 'same'), psfr, 'same' );
end
y=reshape(V,m*n*3,1);
end
% Risolvo il sistema
v=reshape(b,m*n*3,1);
v=pcg(@Op, v, 1.e-10, 500);
C=reshape(v,m,n,3);
end