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

  • $\begingroup$ What do you mean by poisson noise estimation? Poisson parameter $\lambda$ is estimated using the sample mean. $\endgroup$ – Hasan Oct 9 '13 at 8:44
  • $\begingroup$ @Hasan Poisson noise estimation mean estimating the level of the noise (variance sigma) in the image $\endgroup$ – manuala Oct 9 '13 at 15:17
  • $\begingroup$ duplicate of stackoverflow.com/q/18813068/427252 $\endgroup$ – Memming Jan 22 '14 at 15:56

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?

  • $\begingroup$ Hi, Thank you for the links you provided, but I see that they are theoretical aspect, in addition very complicated for me with all the formulas :( I want to know the following information: if the EM algorithm can estimate the variance of poissoniien noise Is it possible to provide me matlab a link matlab pleasssseee $\endgroup$ – manuala Oct 8 '13 at 19:53

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