HOW TO SAVE IMAGES FROM SUBPLOT TO PNG?

Hi all,

I have 41 images. when I binarize it, then I plot 41 images in one figure as shown below. My coding as below. How to extract it into their own. I mean I want to save as png. Im used imwrite but failed.

%testimages
DATASetDir = fullfile('C:\Users\Akmal\Desktop\I-131 256 28.02.2020\I-131 SPECT NEMA VALIDATION 01112019 256X256 26.09.2021 petang');
IMAGEDir = fullfile(DATASetDir,'Test');
IMDS = imageDatastore(IMAGEDir);
% IMDS = imageDatastore(IMAGEDir , ...
%    'FileExtensions', '.dcm','ReadFcn',@(x) dicomread(x));
% % volReader = @(x) dicomRead(x);
% voldsTest = imageDatastore(IMAGEDir , ...
%     'FileExtensions','.dcm','ReadFcn',volReader);
alldice=[]
acc=[]
for ii=1:41
    subplot(6,7,ii)
    I = readimage(IMDS,ii);
    [C,scores] = semanticseg(I,net1);
    
    B = labeloverlay(I,C);
    outt2=C=="foreground";
    st2=strel('disk',5);
    outt22=imopen(outt2,st2);
    title('input')
    imshow(outt22)
end

for k = 1:41
imwrite(outt22(:,:,k), sprintf('%d.png', k));
end

this is my error

Index in position 3 exceeds array bounds (must not exceed 1).

only first image saved, the rest 40 image not have.

ANYONE CAN HELP ME? SHOULD BE CAN SAVE 41 IMAGES BINARY IMAGES.

Answer 1

[Walter Roberson]

%testimages
DATASetDir = fullfile('C:\Users\Akmal\Desktop\I-131 256 28.02.2020\I-131 SPECT NEMA VALIDATION 01112019 256X256 26.09.2021 petang');
IMAGEDir = fullfile(DATASetDir,'Test');
IMDS = imageDatastore(IMAGEDir);
% IMDS = imageDatastore(IMAGEDir , ...
%    'FileExtensions', '.dcm','ReadFcn',@(x) dicomread(x));
% % volReader = @(x) dicomRead(x);
% voldsTest = imageDatastore(IMAGEDir , ...
%     'FileExtensions','.dcm','ReadFcn',volReader);
alldice=[]
acc=[]
for ii=1:41
    subplot(6,7,ii)
    I = readimage(IMDS,ii);
    [C,scores] = semanticseg(I,net1);
    
    B = labeloverlay(I,C);
    outt2=C=="foreground";
    st2=strel('disk',5);
    outt22(:,:,ii) = imopen(outt2,st2);
    title('input')
    imshow(outt22(:,:,ii))
end

for k = 1:41
    imwrite(outt22(:,:,k), sprintf('%d.png', k));
end

However... why do you bother to do the labeloverlay() when you do not use B after that? The image you save is of the imopen() of the binary result about whether C predicted foreground or not.

[mohd akmal masud]

its WORK!!!! TQ VERY MUCH WALTER