Problem with the saved output of a high spatial frequency pass filtered image

Hello -

I am trying to write a file with the output from a hgih spatial frequency pass filter. When the figure shows up in MATLAB it looks like what I expect. However, when I look at the written file, it looks different (and wrong!). I am running this function on many images and cannot save the figure each time.

Below is the relevant code. Basically the figure that pops up of B2 is what I expect, but in my folder, the saved image is much different and not what I need.

Anyone know how to help me with this? Thanks so much in advance!

files = {
    'longImagename.jpg', ...
    'otherLongimagename.jpg', ...
    'andsoforth.jpg', ...
    };

nfiles = size(files,2);
 
for n = 1:nfiles
    
    % read in image:
    [tmp,current_file,ext] = fileparts(files{n});
    im = imread(strcat(current_file,ext));
    
    % HSF - Create the HIGH pass input arguments
     
        A = fft2(double(im)); % compute FFT of the grey image
        A1=fftshift(A); % frequency scaling
        % Gaussian Filter Response Calculation
        [M N]=size(A); % image size
        R=10; % filter size parameter 
        X=0:N-1;
        Y=0:M-1;
        [X Y]=meshgrid(X,Y);
        Cx=0.5*N;
        Cy=0.5*M;
        Lo=exp(-((X-Cx).^2+(Y-Cy).^2)./(2*R).^2);
        Hi=1-Lo; % High pass filter=1-low pass filter
        % Filtered image=ifft(filter response*fft(original image))
        J=A1.*Lo;
        J1=ifftshift(J);
        B1=ifft2(J1);
        K=A1.*Hi;
        K1=ifftshift(K);
        B2=ifft2(K1); %this is the HSF one
        figure;
        imshow(B2,[]);
        
% save HSF to file:
    outfilename = sprintf('%s_HSF.jpg',current_file);
    imwrite(B2,outfilename);
    
end

[Elissa Aminoff]

Did you ever solve this problem? I am likely running into the same issue ...

thanks!

[Image Analyst]

@Elissa Aminoff, since it was over a year ago, I guess it was solved. You'd have better luck posting your own new question with your data and code.

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