%0 Journal Article
%T Optimization of Existing Centroiding Algorithms for Shack Hartmann Sensor
%A Akondi Vyas
%A M B Roopashree
%A B R Prasad
%J Physics
%D 2009
%I arXiv
%X Three centroiding techniques to estimate the position of the spots in a Shack Hartmann sensor: Normalized Centre of Gravity (CoG), Iteratively Weighted Centre of Gravity (IWCoG) and Intensity Weighted (IWC) centroiding are studied in comparison. The spot pattern at the focal plane of a Shack Hartmann sensor was simulated by including the effect of a background noise. We present the results of optimization of the performance of each of the centroiding techniques as a function of Signal to Noise Ratio (SNR) at different experimental conditions.
%U http://arxiv.org/abs/0908.4328v1