How to read multiple jpg images in a loop?
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hello, i am a novice user in matlab my question is: i have stored some 100s of images in some folder and i want to read it one-by-one.how can i do this?
17 commentaires
Anil Varma
le 13 Déc 2019
showing error
Error using randi
First input must be a positive scalar integer value IMAX, or two integer values [IMIN IMAX] with IMIN
less than or equal to IMAX.
Error in test (line 9)
idx=randi(n);
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Plus de réponses (5)
Karthik Karri
le 6 Mar 2014
You can rename all images like..im1,im2,im3.....im100. To read 100 images one by one, run a loop 100 times with i as variable from 1 to 100 and in imread, m=imread(['folder_path\im' num2str(i) '.jpg']). I hope I answered your question.
chaitra naveen
le 20 Mar 2017
can you please help me out to read 100's of images from folder to matlab and resize them to 100x100.
1 commentaire
Image Analyst
le 4 Mai 2017
Use imresize in a loop like the loops given in the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F
Muhammad Sohail
le 27 Nov 2017
filelist = dir('Training data');
for i=1 : length(filelist)
for i=1 : length(filelist)
filename = filelist(i);
if ~strcmp(filename.name , '.') && ~strcmp(filename.name , '..')
filename.name
end
end
Haseeb Hassan
le 30 Juin 2019
for i=1:16; % we have 16 images we have in or folder
clc;clear;
images ='C:\Users\Haseeb\Desktop\input\for_loop_input';
jpgfiles=dir(fullfile(images,'\*.jpg*'));
n=numel(jpgfiles(i));
im=jpgfiles(i).name
im1=imread(fullfile(images,im));
imshow(im1);
end
Here is the simple and short code, which will acces your images from your folder in a sequence.
1 commentaire
shital shinde
le 21 Fév 2020
Actually it gives error as
Array indices must be positive integers or logical values.
n=numel(jpgfiles(i)); // for this line.
will you tell me why ?
Xylo
le 6 Mar 2014
You can do this easily..... before doing this program, you have to keep all of your image in a folder and rename them by any common char+number concatenation form (like a1.jpg, a2.jpg,a3.jpg....). after that you just use strcat() function for reading the path name, and then read the images.
for i=1:10 %suppose there are 10 image
file_name=dir(strcat('J:\multimedia\photo\')); % the path tht u hv imges
im=imread(strcat('J:\multimedia\photo\',file_name(i).name));
imtool(im);
end
8 commentaires
Walter Roberson
le 29 Nov 2016
Isha Pandya, please show your current code and describe what difficulty you are observing.
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