How to cut an image manually using pixels values with for loop without imcrop ?

How can I apply Matlab code to do what the imcrop function does but manually using for loop?

Answer 1

[Sulaymon Eshkabilov]

Here is a discussion thread that already addressed your question very well: https://www.mathworks.com/matlabcentral/answers/344816-how-to-cut-an-image-by-pixels-without-imcrop?s_tid=answers_rc1-1_p1_MLT

[Hanan Elsayed]

I could not apply it and understand it ,,as it is used while loop

Answer 2

[Image Analyst]

Not sure what you mean. How about this

grayImage = imread('moon.tif');
figure(1)
imshow(grayImage)
for k = 1 : 3
    uiwait(helpdlg('Drag out a box to crop the image.'));
    croppedImage = imcrop(grayImage);
    figure(2) % Switch to a figure just for the cropped images only.
    subplot(2, 2, k);
    imshow(croppedImage); % Display it.
    figure(1); % Return to the original image.
end