How can i implement least squares of the difference between 2 matrices?

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Rawan hamdi
Rawan hamdi 2013-4-10
Hi,
I'm trying to get the least squares of the difference between 2 matrices
argmin |g-u| both g and u are matrices of size [280,307,191]
any help?

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回答（1 个）

Iman Ansari
Iman Ansari 2013-4-10
Hi
Error= g-u;
MSE=mean(Error(:).^2)
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Iman Ansari
Iman Ansari 2013-4-11
For these u and g what is the answer?
u=[211 103 93; 256 239 16; 96 110 216];
g=[147 38 131; 11 228 112; 158 192 41];
Error= g-u;
SquersError=Error.^2;
LeastSquersError=min(SquersError(:));
Argmin=abs(Error(SquersError==LeastSquersError))
Is 11 the result you want?
Rawan hamdi
Rawan hamdi 2013-4-11
i really have no idea what the constrained least squares means! but all i understood is that the term
|| g-u || is the data fidelity term between these 2 images(matrices) and the whole equation
x = ||g-u ||.^2 is the constrained least squares
and i'm trying to know what the result should be

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