MATLAB Answers

Read, Crop and then Save multiple images

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Marco Beccarini
Marco Beccarini on 12 Apr 2018
Commented: Mustafa Yildiz on 29 Mar 2020
I am really new to Matlab, but I need for a project to crop multiple images with the same rectangle and then save them into a new folder.
(I have 172 images in the folder, first one is called frame10.jpg, last one is frame182.jpg)
Here's my code so far:
for n=10:182
image_{n}=imread(sprintf('frame%s.jpg', num2str(n)));
end
[x rect] = imcrop(image_{10})
for n=11:182
imcrop(image_{n}, rect)
end
When I Run it, it opens up all the figures of the images correctly cropped.
My questions are: how can I tell matlab not to open up all the figures of the cropped images since I do not need to see them?
How do I save all the cropped images in a new folder 'Cropped' inside the current folder? (possibly using imwrite but it's not necessary)

Accepted Answer

KSSV
KSSV on 12 Apr 2018
Edited: KSSV on 14 Apr 2018
images = dir('*.jpg') ; % GEt all images of the folder
N = length(images) ; % number o fimages
I = imread(images(1).name) ; % crop one to get rect
[x, rect] = imcrop(I) ;
for i = 1:N
I = imread(images(i).name) ; % REad image
I = imcrop(I,rect) ; % crop image
[filepath,name,ext] = fileparts(images(i).name) ;
imwrite(I,strcat(name,'cropped',ext)) ; % Save image
end
  8 Comments
nisa sarfraz
nisa sarfraz on 14 Jan 2020
I = imread(images(1).name) ; % crop one to get rect
this line gives error of index matrix dimension exceeds. please suggest some solution.

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More Answers (1)

Ismail Nasri
Ismail Nasri on 7 Feb 2020
</matlabcentral/answers/uploaded_files/270469/Captureblm.PNG> Hiw can i use this script for detecting crop and saving multiples images
  1 Comment
Mustafa Yildiz
Mustafa Yildiz on 29 Mar 2020
Hello did you find any way for do that ?

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