NDLI: Image Reconstruction Using The Bispectrum*

Content Provider	IEEE Xplore Digital Library
Author	Lawrence, T. Fitch, P. Goodman, D.
Copyright Year	1988
Description	Author affiliation: Lawrence Livermore National Laboratory (Lawrence, T.)
Abstract	The resolution of a standard telescope imaging system is severely limited by temperature-gradient induced phase fluctuations in the atmosphere. Short exposure images, however, during which the atmosphere is effectively frozen, contain diffraction-limited resolution information about the object. Techniques for extracting this information are collectively called "speckle interferometry". He will show that by averaging the complex bispectra of an ensemble of images, the Fourier phase of the object can be estimated. This estimate, combined with a standard estimate of the Fourier magnitude using the average power spectrum, will then yield a diffraction-limited reconstruction of the object. We also present results of a simulation of this technique, which demonstrates the reconstruction of an extended, noisy object from a series of short exposure images.
Starting Page	58
Ending Page	62
File Size	317726
Page Count	5
File Format	PDF
ISSN	10586393
DOI	10.1109/ACSSC.1988.753954
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1988-10-31
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image reconstruction Atmosphere Image resolution Telescopes Fluctuations Diffraction Interferometry Speckle Laboratories Energy resolution
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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