how can we find the percentage of similarity between two matrices ??
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i have two 1280-by-720 matrices. after looking the elements of those two matrices, both appears nearly equal. please tell me how can i find the percentage of similarity or equality between two matrices. i have found correlation coefficient method to find similarity between those two matrices, so can anyone suggest any different way to do the same.
Navneet Nayan
Answers (2)
KSSV
on 22 Feb 2017
How about the below logic?
m = 1280 ; n = 720 ; % your dimensions
p = 1000 ;
a = rand(m,n) ; % a random matrix
b = rand(m,n) ; % a random matrix
idx = randsample(1:m*n,p) ; % deliberately making p elements in a and b equal
a(idx) = b(idx) ;
%
k = a==b ; % get the equal elements
iwant = sum(k(:)); % total number of equal elements, I will get it as p (i fixed it earlier)
percentage = iwant/(m*n)*100
In your case, a and b are matrices which already have equal elements. If == is not working try with ismemebr, ismemebrtol.
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