Skip to main content

Gram-Charlier matched filter for Shack-Hartmann sensing at low light levels

Ruggiu, J.M., Solomon, Christopher J., Loos, G. (1998) Gram-Charlier matched filter for Shack-Hartmann sensing at low light levels. Optics Letters, 23 (4). pp. 235-237. ISSN 0146-9592. (doi:10.1364/OL.23.000235) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided. (Contact us about this Publication)
Official URL
http://dx.doi.org/10.1364/OL.23.000235

Abstract

A study has been made of a Gram-Charlier matched filter for Shack-Hartmann sensing of wave-front slopes. The method is based on modeling the point-spread function by an expansion in terms of Gauss-Hermite polynomials. We present results for several subaperture/coherence area sizes both with and without CCD read noise. A more accurate estimation of the local slopes can be. achieved at low light levels in this way than with the standard first-moment estimator.

Item Type: Article
DOI/Identification number: 10.1364/OL.23.000235
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK5101 Telecommunications > TK5103.59 Optical communications
T Technology > TK Electrical engineering. Electronics. Nuclear engineering
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Faculties > Sciences > School of Physical Sciences
Depositing User: Tara Puri
Date Deposited: 04 Jul 2009 12:32 UTC
Last Modified: 06 Feb 2020 04:03 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/17074 (The current URI for this page, for reference purposes)
Solomon, Christopher J.: https://orcid.org/0000-0002-5057-4614
  • Depositors only (login required):