Read multiple images from folder and subfolder within a for loop

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Turbulence Analysis 2020-11-27

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https://ww2.mathworks.cn/matlabcentral/answers/665463-read-multiple-images-from-folder-and-subfolder-within-a-for-loop

Hi,

I intend to read image files placed inside folder (.jpg) and subfolder (.bmp) within a for loop opeartion. Could someone please help me out with this ??

for f = 1:1:1
    if (f>=1) && (f<=9)
        fname_strt = 'B0000' ;
    elseif (f>=10) && (f<=99)
        fname_strt='B000';
    elseif (f>=100) && (f<=999)
        fname_strt='B00';
    else
        fname_strt='B0';
    end
    fname_end = num2str(f);
    fname = strcat(fname_strt,fname_end,'.jpg');
    I=imread(fname);
G = imagesc(x,y,flipud(I));
G.AlphaData = 0.5;
hold on;
%%%%%%% Needs to be read from subfolder
   
    if (f>=1) && (f<=9)
        fname_strt = 'B0000' ;
    elseif (f>=10) && (f<=99)
        fname_strt='B000';
    elseif (f>=100) && (f<=999)
        fname_strt='B00';
    else
        fname_strt='B0';
    end
    fname_end = num2str(f);
    fname = strcat(fname_strt,fname_end,'.jpg');
    h=readimx(fname);
H1 = imagesc(flipud(h));
H1.AlphaData = 0.5;
axis equal
hold on;
end