please give me the explanation

clc;clear all;close all;
r=imread('fig2_background.jpg'); % read the image
[rows columns numberOfColorChannels] = size(r);
if numberOfColorChannels > 1
  r = rgb2gray(r); % converting image to grayscale
else
  r = r; % It's already gray.
end
[row, col]=size(r);
g=zeros(row,col);// 
I=zeros(size(r));
I=r;
S=zeros(size(r));
S(80:82,172:174)=ones(3,3); %initial seed image
figure,imshow(S),title('Initial Seed Image')
----------------------------------------------------------------

T=50; %threshold value
r=double(r);
w = [1 1 1;1 1 1;1 1 1 ];  
SI=size(r);
p=size(r);
for x=2:1:p(1)-1
  for y=2:1:p(2)-1  
      a1=[w(1)*S(x-1,y-1) w(2)*S(x-1,y) w(3)*S(x-1,y+1) w(4)*S(x,y-1) w(5)*S(x,y) w(6)*S(x,y+1) w(7)*S(x+1,y-1) w(8)*S(x+1,y) w(9)*S(x+1,y+1)];
      AI(x,y)=min(a1);
  end
end
SI= padarray(AI,[1 1],'symmetric','post');
SI=uint8(SI);
J=find(SI); 
S1=r(J);  % seed value obtained from SI
seedvalue=S1;
S=abs(r- seedvalue)<= T; % thresholding the absolute difference between original image & seed value

figure,imshow(S),title('thresholding output')

        for p=1:1:row
        for q=1:1:col
            if(SI(p,q)==1)
                for n=q:1:col
                if S(p,q)==S(p,n)
                    g(p,n)=1;
                end
                end
                for n=q:(-1):1
                if S(p,q)==S(p,n)
                    g(p,n)=1;
                end
                end
                for n=p:-1:1
                if S(p,q)==S(n,q)
                    g(n,q)=1;
                end
                end
                for n=p:1:row
                if S(p,q)==S(n,q)
                    g(n,q)=1;
                end
                end
               for n1=p:1:row
                 for  n2=q:1:col
                if S(p,q)==S(n1,n2)
                    g(n1,n2)=1;
                end
                end
                end
                for n1=p:1:row
                 for   n2=q:(-1):1
                if S(p,q)==S(n1,n2)
                    g(n1,n2)=1;
                end
                end
                end
                for n1=p:-1:1
                 for   n2=q:(-1):1
                if S(p,q)==S(n1,n2)
                    g(n1,n2)=1;
                end
                end
                end
                  for n1=p:-1:1
                  for  n2=q:1:col
                if S(p,q)==S(n1,n2)
                    g(n1,n2)=1;
                    end
                end
                end
                end
                end
            end
  g=uint8(g);
  SE = ones(1,1);
  g =bwlabel(imdilate(g,SE),8);%reconstructing the image
  %g=logical(g)
  %I(g)=0
  %figure,imshow(I),title('Final Output')
  Lrgb = label2rgb(g);
  figure, imshow(Lrgb)
  title('output of region growing process')
  figure, imshow(I), hold on
  himage = imshow(Lrgb);
  set(himage, 'AlphaData', 0.3);
  title('final output superimposed on original image')

[mohammed]

what do you want?

[yuvashree]

can u explain ths code

[Image Analyst]

Looks like it does region growing to me, at least that's what the title says.

Answer 1

[Walter Roberson]

No, we cannot explain the code. Ask the person who wrote it.