writing the equation of normalize correlation

hello.please i want for writing the following equation in mathworks,how can i write it

[Benjamin Thompson]

Are you asking how to implement the correlation in MATLAB code, or are you asking how to enter the equation into the MATLAB Symbolic Toolbox?

The MATLAB function for the numerical calculation is xcorr2.

[Hadeel]

sir i want for writing the equetion in my program not in mathworks tools.i want for writing in my hand no by exist function.

Answer 1

[Torsten]

rng('default')
x = 4;
y = 5;
w = rand(x,y);
wstroke = rand(x,y);
NC = sum(w.*wstroke,'all')/sum(w.^2,'all')

NC = 0.5080

[Hadeel]

ok.thanks alot sir