plz help me to write code for this formula

[KSSV]

What is I? matrix or constant?

[Adam]

Usually when people ask to 'help me to...' it means you have done something and want people to help you make it correct rather than just a 'Please do it all for me' question.

As formulae go that one looks very easy to implement. what part of it is causing problems?

[zakir khan]

for rgb image Normalization i am trying to use this Normalization formula but there is error how i cam implement it on my rgb image

i=imread('05.jpg'); >> alpha=mean( i ); beta=std(double(i));

(0 - 1) * (1/(1+exp((-1-beta)/alpha)) + 1);

[Adam]

alpha and beta will be vectors with that formulation.

You would need to use

alpha = mean( double( i(:) ) );
beta = std( double( i(:) );

to get scalar values for these.