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From Mungo Eider, 5 Years ago, written in Plain Text.
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  1. image = imread('Im1.bmp');
  2. figure('Name','Original');
  3. imshow(image);
  4.  
  5.  
  6. grey_average = (image(:,:,1) + image(:,:,2) + image(:,:,3))/3;
  7. figure('Name','average');
  8. imshow(grey_average);
  9.  
  10.  
  11. grey_weighted = 0.3*image(:,:,1) + 0.6*image(:,:,2) + +0.1*image(:,:,3);
  12. figure('Name','weighted');
  13. imshow(grey_weighted);
  14.  
  15. grey_max = max(image(:,:,:),[],3) ;
  16.  
  17. figure('Name','max');
  18. imshow(grey_max);
  19.  
  20. grey_min_max= min(image(:,:,:) , [] , 3) + max(image(:,:,:),[],3);
  21.  
  22. figure('Name','minmax');
  23. imshow(grey_min_max);
  24.  
  25.  
  26.  
  27. id_grey_avg=size(unique(grey_average));
  28. id_grey_max=size(unique(grey_max));
  29. id_grey_min_max=size(unique(grey_min_max));
  30. id_grey_weighted=size(unique(grey_weighted));
  31.  
  32. rgb_columns = reshape (image, [],3);
  33.  
  34.