How to use code of chi square test to check histogram analyis

12 views (last 30 days)
How to use code of chi square test to check histogram analyis

Accepted Answer

Parveiz Lone
Parveiz Lone on 25 Nov 2021
%% chi square test for image data
function [X_R X_G X_B]=chisquare(C)
B1=uint8(C); % C=cipher image
v=0;
a1=imhist(B1(:,:,1));
a2=imhist(B1(:,:,2));
a3=imhist(B1(:,:,3));
for i=1:256
z1=((a1(i)-256).^2)/256;
v=v+z1;
end
z2=((a2-256).^2)/256;
z3=((a3-256).^2)/256;
X_R=v;
X_G=sum(z2);
X_B=sum(z3);
end

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!