Techniques for variance stabilizing? Filtering Poisson noise?
Here is the link explaining variance stabilizing transform.

Some papers on Poisson noise removal


Efficient gradient projection methods for edge-preserving removal of Poisson noise
Wavelets,Ridgelets and Curvelets for Poisson Noise removal(Anscombe transform is used here)
Unsupervised Non Local Means for Poisson Noise


Similar question has been asked before: How to remove Poisson and Gaussian Noise?