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k means clustering using k=4

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vijeta uppal
vijeta uppal on 29 Mar 2021
Commented: Walter Roberson on 29 Mar 2021
Perform K-means clustering on the mandrill image with K=4.
can someone please help me with code for this question, as I'm a begineer don't have much idea about how to proceed with this question.

Accepted Answer

KSSV on 29 Mar 2021
I = imread('Mandril.jpeg') ;
I = im2double(I);
R = I(:,:,1); R = R(:);
G = I(:,:,2); G = G(:);
B = I(:,:,3); B = B(:);
idx = kmeans([R G B], 4);
imshow(ind2rgb(reshape(idx, size(I,1), size(I, 2)), rand(4,3)))
  1 Comment
Walter Roberson
Walter Roberson on 29 Mar 2021
Note that it was a homework question...

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More Answers (1)

Walter Roberson
Walter Roberson on 29 Mar 2021
The line that has
[idx,C] = kmeans(X,3);
would change to
[idx,C] = kmeans(X,4);
if you were clustering with four clusters.

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