rank order filter effects on image

Following example show rank order filter effects on image , it show erosion and dilation effect . The value of the order is the key .

Code:

   
    %% create a new figure to show the image . 
    A = imread('snowflakes.png');
    figure(1);
    %% show the loaded image.
    imshow(A);
    
    %% dilation affect.
    B = ordfilt2(A,25,true(5));
    figure(2),imshow(B)
    
    %% erosion affect.
    B = ordfilt2(A,1,true(5));
    figure(3),imshow(B)
 

Attachments:

1.GIF [ 26.23 KiB | Viewed 7788 times ]

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M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
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