Modelling and restoration of images distorted by atmospheric turbulence

Author

van der Elst, H. ; van Schalkwyk, J.J.D.

Author_Institution

Pretoria Univ., South Africa

fYear

1992

fDate

9/11/1992 12:00:00 AM

Firstpage

59

Lastpage

62

Abstract

This paper investigates images distorted by turbulence and additive detection noise. A series of short-exposure images of the object as well as the long term autocorrelation function of the optical transfer function are assumed to be known. The authors are investigating the use of speckle interferometer techniques to obtain the Fourier modulus and the Knox-Thompson method to obtain the phase of extended objects. Modelling examples are given

Keywords

atmospheric light propagation; atmospheric turbulence; image reconstruction; optical correlation; optical transfer function; speckle; Fourier modulus; Knox-Thompson method; additive detection noise; atmospheric turbulence; image modelling; image restoration; long term autocorrelation function; optical transfer function; speckle interferometer techniques; Adaptive optics; Additive noise; Atmospheric modeling; Autocorrelation; Image restoration; Optical distortion; Optical interferometry; Optical noise; Speckle; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications and Signal Processing, 1992. COMSIG '92., Proceedings of the 1992 South African Symposium on

Conference_Location

Cape Town

Print_ISBN

0-7803-0807-7

Type

conf

DOI

10.1109/COMSIG.1992.274312

Filename

274312