If a matrix contains 1's and 0's ,i would like to get only those 1's and want to take avg values of those corresponding intensity values

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senthil vadivu
senthil vadivu 2016-11-20
回答： Image Analyst 2016-11-20
If a matrix contains 1's and 0's ,i would like to get only those 1's and want to take avg values of those corresponding intensity values

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KSSV
KSSV 2016-11-20
Let a be your vector which have 0 and 1.
% get indices of 1
idx = a(a==1);
Let b be your intensity values corresponding to a.
% extract inentisity values of positions 1
b_1 = b(idx);

更多回答（1 个）

Image Analyst
Image Analyst 2016-11-20
If matrix1 is your matrix of 0's and 1's, and matrix2 is your intensity matrix, you can get the mean intensity of matrix2 only where the values of matrix1 are 1 like this:
theMean = mean(matrix2(matrix1));

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