相位恢复算法

有会相位恢复算法的吗？能帮我看看下面的代码错哪儿了吗？不胜感激

2d centered Fourier transform，居中的傅里叶变换
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Citation for this code and algorithm:
% Tatiana Latychevskaia and Hans-Werner Fink
% "Practical algorithms for simulation and reconstruction of digital in-line holograms",
% Appl. Optics 54, 2424 - 2434 (2015)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% The code is written by Tatiana Latychevskaia, 2002
% The version of Matlab for this code is R2010b

function [out] = FT2Dc(u0);

[Nx, Ny] = size(1i,1j);

f1 = zeros(Nx,Ny);

for ii = 1:Nx
    for jj = 1:Ny
         f1(ii,jj) = exp(1i*pi*(ii + jj));
    end
end

FT = fft2(f1.*in);

out = f1.*FT;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

林深时见鹿	2020-05-29 09:45
求大神指教

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