i am new to matlab can anyone please explain this lines

filename=uigetfile('.jpg');
I=imread(filename);
I=imresize(I,[256 256]);
figure,imshow(I);
title('input image')
%----imnoise
I_n=I;
J=zeros(size(I_n));
for iclr=1:3
I_n = I(:,:,iclr);
[m n]=size(I_n);
BH=imhist(I_n);
[v p1]=max(BH);
pn=find(BH~=v);
[v p2]=max(BH(pn));
s_p=[p1-1 p2-1];
I_sp=zeros([m n]);
sp1=find(I_n==s_p(1));
I_sp(sp1)=1;
sp2=find(I_n==s_p(2));
I_sp(sp2)=1;
J(:,:,iclr)=I_n;
for i=2:m-1
  for j=2:n-1
      b_3=I_n(i-1:i+1,j-1:j+1);
      if I_sp(i,j)==1            
          J(i,j,iclr)=median(double(b_3(:)));
      end
  end
end
end
%-----filtered image
figure,imshow(uint8(J));

Answer 1

[vijay sai]

i think the program u have given is a incomplete one.. it's also erroneous...it's trying to plot histograms for individual image plans r,g,b,...when I tried finishing the program and debug it...the loop is never ending ...giving the full program ..someone may be helpful to you..

[Azzi Abdelmalek]

Kalpana commented

hi vijay sai i submitted the full code can u pls help me now

Answer 2

[Azzi Abdelmalek]

If you are new with Matlab, the best thing to do is to read the getting started with Matlab. You can also learn what each function do by typing

help imhist
help size
and so on