Convert matlab code to Cuda c++ (FFT of 2d Images)

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alaa Afeef
alaa Afeef 2016-8-26
回答： Kanishk 2025-7-8
How can the below Matlab code be converted into Cuda c++? It is to apply FFT of the 2D images.
Input: ptycho.m_wp; %4 dimensional matrix of size (65 x 65 of 2D images of 90 x 90 pixels)
size4D=[65,65,90,90];
size4D = [size(ptycho.m_wp,1), size(ptycho.m_wp,2), ptycho.ObjSize(1), ptycho.ObjSize(2)];
mean_m_wp=zeros(size(ptycho.m_wp,1),size(ptycho.m_wp,2));
sumI=0;
fprintf('FT{M} w.r.t Probe Positions...')
% allocate memory for G matrix
G_wp = complex(zeros(size4D));
disp('*****');
disp('Looping through FFT on CPU');
for i = 1:size4D(1)
for j=1:size4D(2)
G_wp(i,j,:,:) = fftshift(fft2(ifftshift( ImagePadMean(squeeze(ptycho.m_wp(i,j,:,:)),ptycho.ObjSize))));
end
end
mean_m_wp = mean(mean(ptycho.m_wp,4),3);
sumI = sum(ptycho.m_wp(:));

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回答（1 个）

Kanishk
Kanishk 2025-7-8
Hello Alaa,
You can use the "GPU Coder" application in MATLAB to generate CUDA C++ code from MATLAB code. You can generate CUDA C++ source code, static libraries, dynamically linked libraries, and executables that you can then integrate into existing CUDA C++ applications outside of MATLAB.
The application is accessible from toolstrip on Apps tab, under Code Generation.
You can learn more about 'GPU Coder' by following this documentation.
https://www.mathworks.com/help/gpucoder/ref/gpucoder-app.html
Cheers!!

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