Abstract

The bispectrum is the Fourier transform of the triple correlation, sometimes also referred to as the triple-product integral. The influence of photon noise on the bispectrum of an image-intensity distribution is discussed. As an example, the astronomical speckle-masking method is considered. Speckle masking is a method to overcome image degradation that is due to the turbulent atmosphere. It is shown theoretically that bispectral analysis in speckle masking should yield true, diffraction-limited images in all those cases in which the speckle-interferometry process has been successful in reconstructing the object autocorrelation.

© 1985 Optical Society of America

Signal-to-noise ratio of the bispectral analysis of speckle interferometry

Tadashi Nakajima
J. Opt. Soc. Am. A 5(9) 1477-1491 (1988)

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K.-H. Hofmann and G. Weigelt
Appl. Opt. 26(10) 2011-2015 (1987)

Practical aspects of image recovery by means of the bispectrum

Pedro Negrete-Regagnon
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Pedro Negrete-Regagnon
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