How to code this avarage gradient equation in matlab?

Average gradient (AG). The AG reflects the ability to express the details of an image and can be used to measure the

relative clarity of the image. AG is formulated as:

Answer 1

[KSSV]

Let F be your matrix.

[dfdx,dfdy] = gradient(f) ; 
M = (dfdx.^2+dfdy.^2)/2 ; 
AG = mean(mean(M)) ; 

I gave answer quckly...cross check once.

[Alvin Alvin]

Thanks KSSV,

[Alvin Alvin]

hey KSSV, please help me again

To improve the significance of the data, a comprehensive evaluation parameter was set in the experiment so that the average values of different sets of test data could be presented in a consistent manner:

where n is the sample size, Yi is the result of testing on a certain sample, and Y is the average value.