How to use Expectation maximization to estimate poisson noise matlab I delved into the state of the art of algorithms for Poisson noise estimation in order to estimate the variance, I found that the Expectation Maximization algorithm is very used and it is very effective and easy to use,

But I have not found the matlab code, I found only one that is was used for classification,

can you give me the code or the algorithm for estimating and not for classification please.

I would be grateful if you answer me
Explanations of the Expectation Maximisation algorithm:

Nature.com ( Nature Biotechnology 26, 897 - 899 (2008) )

Wikipedia - Expectation–maximization algorithm 

Stack Overflow - What is an intuitive explanation of Expectation Maximization technique?