Read, Crop and then Save multiple images

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Marco Beccarini 2018-4-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/394359-read-crop-and-then-save-multiple-images

评论： Mustafa Yildiz 2020-3-29

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)

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采纳的回答

KSSV 2018-4-12

4
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/394359-read-crop-and-then-save-multiple-images#answer_314709

编辑：KSSV 2018-4-14

在 MATLAB Online 中打开

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