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

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George Ibrahim 2017-6-24

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/346076-how-to-automatically-crop-images-in-a-folder-and-saving-them-in-a-sub-folder

评论： asirajdin 2020-11-2

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

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Image Analyst 2020-9-22

在 MATLAB Online 中打开

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 2020-11-2

Thanks for the response, I have actually realised where the problem was and it has been resolved.

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采纳的回答

Image Analyst 2017-6-24

3
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/346076-how-to-automatically-crop-images-in-a-folder-and-saving-them-in-a-sub-folder#answer_271791

在 MATLAB Online 中打开

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