I Need the matlab code for the attach equation.

2017 10 20
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更新时间：2021 8 20
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Actually I need a single value from this equation where sub_band (p,q) is a matrix.

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KL
KL 2017-10-20
What have you tried?
Jan
Jan 2017-10-20
The equation provides a single value already. What have you tried so far? What is the specific problem?

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Jan
Jan 2017-10-20

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A = mean(sub_band(:) .^ 2);

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tania manna
tania manna 2017-10-20
thank you.
A = mean(sub_band(:) .^ 2); or
A = mean(mean(sub_band(:) .^ 2));
Jan
Jan 2017-10-21
The first is a scalar already, so the second mean() has no effect.
Torsten
Torsten 2017-10-20

0 个投票

[p q] = size(sub_band);
A = sum(diag(sub_band.'*sub_band))/(p*q);
Best wishes
Torsten.

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tania manna
tania manna
2017-10-20

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