how to automatically Crop images in a folder and saving them in a sub folder

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I want to wright a code that automatically crop images with a known position, the images are stored in a folder with names 1,2,3,.....,i. it's required to save it with a prefix with the same name, I tried this code to cropping:
imageDir = fullfile('D:\3D_construction\im_set');
im_Set = imageSet(imageDir);
images = cell(1, im_Set.Count);
for i = 1:im_Set.Count
imagcrop{i} = imcrop(i,[1519 1179 760 440]);
end
I tried many ways to save the cropped images but it didn't work if any one can help me I'd be grateful. Thank you in advance
  3 Comments
Image Analyst
Image Analyst on 22 Sep 2020
Sirajdin, there is no iri in your code.
Please start a new question and there put the entire error message (ALL the red text) which would include the actual line number and actual line of code that is throwing the error. In the meantime, try this:
inputFolder = 'C:\Users\Asirajdin\Documents\MATLAB\Negative Images';
imgSets = imageSet(inputFolder, 'recursive')
outputFolder = fullfile(pwd, 'Output'); %'C:\Users\Asirajdin\Documents\MATLAB\Gray sc';
if ~isfolder(outputFolder)
mkdir(outputFolder);
end
keepGoing = true;
for folderIndex = 1 : length(imgSets)
thisFolder = imgSets(folderIndex).Description;
numImagesInThisFolder = imgSets(folderIndex).Count;
fprintf('Processing the %d images in folder "%s"\n', numImagesInThisFolder, thisFolder);
for k = 1 : numImagesInThisFolder
% Read in input image.
thisFullInputFileName = imgSets(folderIndex).ImageLocation{k};
theImage = imread(thisFullInputFileName);
imshow(theImage);
title(thisFullInputFileName);
drawnow;
% Crop the image.
promptMessage = sprintf('Do you want to crop and save this image,\nor Quit processing?');
titleBarCaption = 'Continue?';
buttonText = questdlg(promptMessage, titleBarCaption, 'Yes, Continue', 'No, Quit', 'Yes, Continue');
if contains(buttonText, 'Quit', 'IgnoreCase', true)
keepGoing = false;
break;
end
croppedImage = imcrop(theImage);
% Create output image.
baseFileName = sprintf('Image #%d.jpg', k);
fullOutputFileName = fullfile(outputFolder, baseFileName);
fprintf('Copying #%d of %d: "%s"\n to "%s"\n', k, numImagesInThisFolder, thisFullInputFileName, fullOutputFileName);
imwrite(croppedImage, fullOutputFileName);
end
if ~keepGoing
break;
end
end
asirajdin
asirajdin on 2 Nov 2020
Thanks for the response, I have actually realised where the problem was and it has been resolved.

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Accepted Answer

Image Analyst
Image Analyst on 24 Jun 2017
How about this:
imageDir = 'D:\3D_construction\im_set';
im_Set = imageSet(imageDir);
for k = 1 : im_Set.Count
theImage = imread(im_set........whatever....
croppedImage = imcrop(theImage,[1519, 1179, 760, 440]);
baseFileName = sprintf('Image #%d.png', k);
fullFileName = fullfile(imageDir, baseFileName);
imwrite(croppedImage, fullFileName);
end
  7 Comments
hanyang huang
hanyang huang on 11 Apr 2018
my image files are named IMG_1, IMG_2 ......IMG_1000, SO what should I name it here for im_set? It shows error about the imread file type

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More Answers (1)

nisa sarfraz
nisa sarfraz on 14 Jan 2020
this code gives error in cropped image. why?
  3 Comments
Image Analyst
Image Analyst on 15 Jan 2020
I don't see "points" mentioned in George's code. Let's see your code and your error message, both of which you forgot to attach.

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