Extended scene SH wavefront sensor algorithm: Minimization of scene content dependent shift estimation errors

Adaptive Periodic-Correlation (APC) algorithm was developed for use in extended-scene Shack-Hartmann wavefront sensors. It provides high-accuracy even when the sub-images in a frame captured by a Shack-Hartmann camera are not only shifted but also distorted relative to each other. Recently we found...

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Main Author: Sidick, E.
Format: Conference Proceeding
Language:English
Subjects:
Accuracy
Adaptive optics
Arrays
Correlation
Noise
Optical imaging
Optical sensors
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description Adaptive Periodic-Correlation (APC) algorithm was developed for use in extended-scene Shack-Hartmann wavefront sensors. It provides high-accuracy even when the sub-images in a frame captured by a Shack-Hartmann camera are not only shifted but also distorted relative to each other. Recently we found that the shift-estimate error of the APC algorithm has a component that depends on the content of extended-scene. In this paper we assess the amount of that error and propose a method to minimize it.
doi_str_mv 10.1109/AERO.2012.6187169
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subjects Accuracy
Adaptive optics
Arrays
Correlation
Noise
Optical imaging
Optical sensors
title Extended scene SH wavefront sensor algorithm: Minimization of scene content dependent shift estimation errors
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