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arXiv · 0908.4328

Optimization of Existing Centroiding Algorithms for Shack Hartmann Sensor

Akondi Vyas·M B Roopashree·B R Prasad
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Abstract

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.

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Akondi Vyas, M B Roopashree, B R Prasad. 2009-08-29. Optimization of Existing Centroiding Algorithms for Shack Hartmann Sensor. https://arxiv.org/abs/0908.4328

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