www.gusucode.com > emg_functions > emg_functions/image_processing/im_jointEntropy.m
% Betthauser 2016 -- Calculate joint entropy of 2 rvs in a 2d joint % histogram function jointEntropy = im_jointEntropy(jointHistogram) jointEntropy = 0; hsizey = size(jointHistogram,1); hsizex = size(jointHistogram,2); for i = 1:hsizey for j = 1:hsizex p = jointHistogram(i,j); if p > 0 jointEntropy = jointEntropy - p*log2(p); end end end end