How can I solve this ? It doesn't work.

Hello ,

I have an image and I need to scan all pixels and need to find 65 brithness pixel how many times used ?

I setup an algorithm but it doesnt work . Can you help me how can I solve it.

The image :

im = imread('unnamed.jpg');
griformat= rgb2gray(im);

counter=0;

for i=1: 256
    for j=1 : 256
        
       if griformat==65
           
         counter=counter+1;
          fprintf('times: %f \n ', counter)
          
       else
           j=j+1;
       end
    end  
end

Answer 1

[Walter Roberson]

if griformat(i, j) == 65
    counter = counter + 1;
end

Do not do the j=j+1 as MATLAB is doing that on your behalf because you have the for j loop.

[Can Yilmaz]

Thanks a lot ! Im beginner :(