COMPARATIVE STUDY OF DECONVOLUTION TECHNIQUES FOR INFRARED SPECKLE INTERFEROMETRY.

M. L. Cobb, Donald W Mccarthy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Three deconvolution techniques, CLEAN, Maximum Entropy Method (MEM) and L. B. Lucy's algorithm, are compared through both one-dimensional computer simulation and real astronomical data obtained at high angular resolution. These algorithms are evaluated according to speed, noise sensitivity, and resolution gain. For the simulations, we define the resolution gain needed to separate the components of an equal double as the ratio of the FWHM of the point spread function to the double separation. CLEAN is at least two orders of magnitude faster than the other two algorithms but is limited in usefulness to resolution gains near unity. Lucy's algorithm converges rapidly at first and achieves a resolution gain near two but requires smoothing techniques to reduce its sensitivity to noise. MEM is less sensitive to noise and is capable of resolution gains as high as four. These conclusions are also demonstrated with real astronomical data where MEM again produces the smoothest image consistent with the signal-to-noise.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsDavid L. Crawford
PublisherSPIE
Pages758-765
Number of pages8
Volume627
Editionpt 2
ISBN (Print)0892526629
StatePublished - 1986

Fingerprint

speckle interferometry
Deconvolution
Speckle
Maximum entropy methods
Interferometry
maximum entropy method
Infrared radiation
Optical transfer function
Full width at half maximum
point spread functions
angular resolution
smoothing
unity
computerized simulation
Computer simulation
sensitivity
high resolution
simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Cobb, M. L., & Mccarthy, D. W. (1986). COMPARATIVE STUDY OF DECONVOLUTION TECHNIQUES FOR INFRARED SPECKLE INTERFEROMETRY. In D. L. Crawford (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pt 2 ed., Vol. 627, pp. 758-765). SPIE.

COMPARATIVE STUDY OF DECONVOLUTION TECHNIQUES FOR INFRARED SPECKLE INTERFEROMETRY. / Cobb, M. L.; Mccarthy, Donald W.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / David L. Crawford. Vol. 627 pt 2. ed. SPIE, 1986. p. 758-765.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cobb, ML & Mccarthy, DW 1986, COMPARATIVE STUDY OF DECONVOLUTION TECHNIQUES FOR INFRARED SPECKLE INTERFEROMETRY. in DL Crawford (ed.), Proceedings of SPIE - The International Society for Optical Engineering. pt 2 edn, vol. 627, SPIE, pp. 758-765.
Cobb ML, Mccarthy DW. COMPARATIVE STUDY OF DECONVOLUTION TECHNIQUES FOR INFRARED SPECKLE INTERFEROMETRY. In Crawford DL, editor, Proceedings of SPIE - The International Society for Optical Engineering. pt 2 ed. Vol. 627. SPIE. 1986. p. 758-765
Cobb, M. L. ; Mccarthy, Donald W. / COMPARATIVE STUDY OF DECONVOLUTION TECHNIQUES FOR INFRARED SPECKLE INTERFEROMETRY. Proceedings of SPIE - The International Society for Optical Engineering. editor / David L. Crawford. Vol. 627 pt 2. ed. SPIE, 1986. pp. 758-765
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