MATLAB: I want to use a folder of images in matlab ..I tried but it comes to error..pls help me to point out error

image processingImage Processing Toolbox

This is the program that I have tested:
% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile('C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg'); 
imagefile = dir(filePattern);
nfiles=length(imagefile)
for k = 1 : nfiles
  imageName = imagefile(k).name;
  fullFileName = fullfile('C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg', imageName);
  fprintf(1, 'Now reading %s\n', fullFileName)
  % Now do whatever you want with this file name,
  % such as reading it in as an image array with imread()
  imageArray = imread('C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg');
  imshow(imageArray);  % Display image.
  drawnow; % Force display to update immediately.
end
and error comes as following:
nfiles =
      70
Now reading C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg\im.jpg
??? Error using ==> imread at 357
Can't open file "C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg"
for reading;
you may not have read permission.
Error in ==> see at 11
  imageArray = imread('C:\Program
  Files\MATLAB\R2009a\bin\fundus\*.jpg');

Best Answer

% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile('*.eps');
imagefile = dir(filePattern);
nfiles=length(imagefile);
for k = 1 : nfiles
    imageName = imagefile(k).name;
    fullFileName = fullfile('C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg', imageName);
    fprintf(1, 'Now reading %s\n', fullFileName)
    % Now do whatever you want with this file name,
    % such as reading it in as an image array with imread()
    imageArray = imread('C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg');
    imshow(imageArray);    % Display image.
    drawnow;     % Force display to update immediately.
end
If you would go through it line-by-line, you would see that
fullFileName = 'C:\Program Files\MATLAB\R2009a\bin\fundus\*.jpg\im.jpg'
This is because you already have the file name in imageName and are combining this with the ...\*.jpg
Just change this line to
fullFileName = fullfile('C:\Program Files\MATLAB\R2009a\bin\fundus\', imageName);
To get the proper file name.
Now you need to actually use this name, i.e.
imageArray = imread(fullFileName);
Related Question