Problem to Read .txt file

Hello all.. I have problem to read my .txt file. I already convert my image to .txt file. My image size is 100x100. How to read it and use it in for loop ? here is my coding to change to image to .txt file.

a = imread('img2.jpg');

b = imresize(a,[100,100])

dlmwrite('test4.txt', b, 'delimiter', ',');

d = dlmread('test4.txt');

[x,y] = size(d);

i want to make comparison between two .txt file.That is why i need to read the .txt file.

[Thorsten]

OK. But what exactly is your problem?

[Akmal Rahmat]

First , i insert the image then i save it into .txt file (this is for the test image). Then i want to compare the test image with another image which already save in .txt file also. So in .txt file(test image) i got hundreds of columns and rows of number, and i want to compare each one of the number in .txt file with another .txt file. That why i want to know the proper way to read the .txt file. Below is the code on how i want to compare between both .txt file. i dont even know if it can work. and sorry for my english. Please give me some guidance.

for (int d=0;d<100;d++)

{ for(int g=0;g<100;g++)

    { pixel1 = img1[d][g];%rows

      pixel2 = img2[d][g];%column

      fpixel = pixel1-pixel2;

      if fpixel<=125 
        { fpixel = 1;

          return 1; }

      else fpixel>125

          { fpixel = 0;
              return 0; }
    }
 }

i dont even know my coding is right or not. sorry.

Answer 1

[Thorsten]

You probably should first have a look at your .txt file to check if is has reasonable values, all separated by commas (or blanks, other delimiters may alos work)

type test4.txt

If this is ok, you can read the files using

T1 = dlmread('testimage.txt');
T2 = dlmread('anotherimage.txt')

and compute the difference image (no need to use for-loops)

D = T1 - T2;

and find the nonzero entries

ind_nonzero = find(D~=0);

[Akmal Rahmat]

thank you thorsten

Answer 2

[Luuk van Oosten]

This might help to open your .txt file.

[Akmal Rahmat]

i'll look into it. Thank you.