Reading Multiple Images from Folder

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Chandra Shekhar
Chandra Shekhar on 25 Jan 2013
Edited: Stephen23 on 18 Apr 2021
I have a folder named 'ImageSet1',it consist of 20 images named as a 1.jpg,2.jpg...20.jpg.
Here i want to read images from 1 to 10 and then from 11 to 20 separately. it means, when i read image 1,immediately i have to read 11th image and when i read image 2,immediately i have to read 12th image in a loop and so on.. Here is the my code
sdirectory = 'ImageSet1';
jpegfiles = dir([sdirectory '/*.jpg']);
for k = 1:length(jpegfiles)/2
filename = [sdirectory '/' jpegfiles(k).name];
I = imread(filename);
figure;imshow(I)
filename1=[sdirectory '/' jpegfiles(10+k).name];
I1=imread(filename1);
figure;imshow(I1)
end
This code is not reading in order,like 1 and 11th image,2 and 12th image...
Does any one know please correct this code or any other method..?
  2 Comments
Stephen23
Stephen23 on 27 May 2015
Edited: Stephen23 on 18 Apr 2021
A simple solution is to use my FEX submission natsortfiles
>> S = dir('*.txt');
>> S.name
ans =
'1.txt'
ans =
'10.txt'
ans =
'2.txt'
>> S = natsortfiles(S); % alphanumeric sort by filename
>> S.name
ans =
'1.txt'
ans =
'2.txt'
ans =
'10.txt'

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Answers (2)

Evgeny Pr
Evgeny Pr on 25 Jan 2013
Edited: Evgeny Pr on 25 Jan 2013
Use natural sorting for image filenames.
Listing = dir(fullfile(directoryPath, '*.jpg'));
names = {Listing.name}';
names = sort_nat(names);
fullNames = cellfun(@(x) fullfile(directoryPath, x), names, 'UniformOutput', 0);

azizullah khan
azizullah khan on 29 Nov 2013
dear sir kindly explain me names={listing.name} what does it means

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