MATLAB: I am new to matlab can anyone please explain this lines

noise removal

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));

Best Answer

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..
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