Find local differences in a matrix

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Anusha
Anusha on 21 Oct 2013
Commented: Anusha on 21 Oct 2013
This is an image palette containing RGB value
cmap=
0 0 0
0.5019 0 0
0.7529 0.7529 0.752
0 0.5019 0.5019
1 0 0
0.5019 0.5019 0.50196
0 0 0.50196
1 1 1
1 1 0
0.5019 0.5019 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
0 0 0
calculate this formula
D(cmap)=cmap(x,y)- cmap(x,y-1)
  1 Comment
Anusha
Anusha on 21 Oct 2013
ADD part
After calculating D(cmap), Find
R=-(∑D(cmap))^2

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Accepted Answer

Andrei Bobrov
Andrei Bobrov on 21 Oct 2013
D = diff(cmap,1,2);

More Answers (1)

David Sanchez
David Sanchez on 21 Oct 2013
For k=2:3
D = cmap(:,k) - cmap(:,k-1);
end

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