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//Caption: Circular correlation between two signals
//Example3.16
//page 134
clc;
x = [5,10;15,20];
h = [3,6;9,12];
h = h(:,$:-1:1);
h = h($:-1:1,:);
X = fft2d(x);
H = fft2d(h);
Y = X.*H;
y = ifft2d(Y);
disp(y,'Circular Correlation result y=')
//Result
// Circular Correlation result y=
//
// 300. 330.
// 420. 450.
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