error in writing an image to folder

I have a code ,in which the image is not writing to a folder

clc;
close all;

pathname ='E:\ebcot\mri' 
 dirlist = dir( [pathname '*.jpg'] );
 pickind='jpg';

   f1=fullfile('E:\ebcot\sample25\')
  if (exist(f1) == 0)
     mkdir (f1);
  end

   for m2 = 1:length(dirlist)
    map = pink(90);

      i = imread([pathname, dirlist(m2).name]);
    a=i;

singvals=20;
dvalue=double(a);

      [u,s,v] = svds(dvalue, singvals);

      if isa(a,'uint8')
          im = uint8(u * s * transpose(v));
      end

      if isa(a,'uint16')
          im = uint16(u * s * transpose(v));
      end

      if isa(a,'double')
          im = (u * s * transpose(v));
      end

      return;

      pickind='jpg'
      strtemp=strcat('E:\ebcot\sample25\',int2str(m2),'.',pickind);  
  imwrite(im,strtemp);%title('ebcot low pass frames ');
   end

I have 15 jpg images in mri folder,please help

Answer 1

[Image Analyst]

I think the "return" statement right before the imwrite() might be a huge factor in why it never gets to the imwrite().

By the way, use it like this to check the folder:

f1='E:\ebcot\sample25\'; % No need for fullfile() here.
if ~exist(f1, 'dir')
     mkdir (f1);
end

Don't assign anything to i, which is the imaginary variable, because you'll override it. It's generally not recommended.

You might use fullfile() instead of this "[pathname, dirlist(m2).name]" or the strcat(). You can also use sprintf() instead of strcat, or simply square brackets.

[kash]

CAn u please tell how to use

fullfile() instead of this "[pathname, dirlist(m2).name]" or the strcat(). or simply square brackets.

[kash]

I tried

f1='E:\ebcot\sample25\'; % No need for fullfile() here.

if ~exist(f1, 'dir')

mkdir (f1);

end

and changed the variable i ,but still not working