Can any one help me to fix error with imread()?

The code is...

imgListFile = fopen('image_class.txt', 'r');
F = zeros(6, 24); L = cell(6, 1);

tline = fgetl(imgListFile); currentLine = 1;
while ischar(tline)        
    disp(tline)
    splittedLine = regexp(tline, ',[ ]*', 'split');

      imagePath = fullfile('imgs', splittedLine{1});

      I = imread(imagePath);
      f = sfta(I, 4);
      F(currentLine, :) = f;

      % Store the image label.
      L{currentLine} = splittedLine{2};

      tline = fgetl(imgListFile);
      currentLine = currentLine + 1;
  end;  
  fclose(imgListFile);

I am getting following error...

Error using imread (line 347)
Can't open file "imgs" for reading;
you may not have read permission.

Error in classifymy (line 12)
I = imread(imagePath);

I have checked read permission, but it is there? Not able to trace where is problem? Thanks in advance

Answer 1

[Geoff Hayes]

Nilima - it sounds like you don't have read permissions for this file (though is imgs the correct name for it?). To find out, look at the permissions for this file. If using a Linux or Unix OS, open a terminal window and go to the directory where this file is located. Type

 ls -ag

to list all of the files in this directory along with their permissions. In order for you to have read permissions to this file you will need to see something like

 -r--r--r--@ 1 staff  43279 15 Mar  2015 myImage.gif

The r is for read. If you don't see it for the appropriate group that you are in, then you will have to add it using chmod to change the file's permissions.

If using a Windows operating system, then you can use Explorer to open the properties of the file which you can then add the read permission to.

[Nilima]

Dear, Geoff Sir, Thanks for reply. I have read and write permission for this folder. Still I don't know why this error coming?

Answer 2

[Walter Roberson]

At some point in the file you are encountering a line which is empty before its first comma. That is leaving you with an empty splittedLine{1} and the fullfile() is then leaving "imgs" as the directory name rather than converting it to "imgs\" or "imgs/" with no following file name.

[Nilima]

Dear Walter Sir, Thanks.. I have checked file, but it is not empty as you said. I have attched that file for reference.

[Walter Roberson]

The file is not attached

[Walter Roberson]

Chances are that your file ends in an empty line, a line for which tline is either '' or all blank. You do not check for that possibility before you assume that the line can be used.

[Nilima]

Sorry..File is attached now...

[Walter Roberson]

Yes line 7 is empty.