I am working on aproject of multiband image processing and I need to ask pixel value from user ,so that operations (correlation and etc.) can be performed easily fro an multiband image processing in matlab(creating gui)

u=multibandread('paris.lan',[512,512,7],'uint8=>uint8',128,'bil','ieee-le');
Nof_bands=7;
for k=1:Nof_bands
t_value=u(:,:,k);

          x(k)=double(t_value(38,333));
          y(k)=double(t_value(38,334));
          z(k)=double(t_value(39,333));
          b(k)=double(t_value(39,334));
          x1(k)=double(t_value(486,115));
         y1(k)=double(t_value(486,116));
         z1(k)=double(t_value(487,115));
         b1(k)=double(t_value(487,116));
         avg(k)=double(x(k)+y(k)+z(k)+b(k))/4;
      avg1(k)=double(x1(k)+y1(k)+z1(k)+b1(k))/4;

   end
  d=[1:1:7];
  figure(1)
  plot(d,avg,'r',d,avg1,'g');

%%%correlation between avg and avg1
z=xcorr2(double(avg),double(avg1));
figure(2), plot(z)
title('correlation of 2 signals'); 
%%%%error
mm=double(avg)- double(avg1);
figure(3), plot(d,mm)
title('error of 2 signals');    % error

deltaSignal = (abs(mm));
percentageDifference = double(deltaSignal./ double(avg)); % Percent by element.

figure(4), plot(percentageDifference,'r')
title('% difference of 2 signals');

[Aarti Dwivedi]

What is the question that you have?

[deepika]

Thank you so much. but i did this task