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Fast PSF estimation under anisoplanatic conditions

: Molina-Martel, Francisco; Baena-Gallé, Roberto; Gladysz, Szymon


Stein, K.U. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Optics in Atmospheric Propagation and Adaptive Systems XVIII : 22 September 2015, Toulouse, France
Bellingham, WA: SPIE, 2015 (Proceedings of SPIE 9641)
ISBN: 978-1-62841-851-4
Paper 96410I, 11 pp.
Conference "Optics in Atmospheric Propagation and Adaptive Systems" <18, 2015, Toulouse>
Conference Paper
Fraunhofer IOSB ()
turbulence; anisoplanatism; deconvolution; NAT

Correction of atmospheric turbulence effects on images involves mainly mitigation of distortion (“de-warping”) and removal of image blur. One of the approaches for correcting atmospheric blurring involves the use of deconvolution. The ill-posed nature of the problem and the number of unknowns makes this problem hard to solve. This is why methods like blind deconvolution can be too time-consuming for real-time application. Additionally, an optimal parameter input is also often required (which requires interaction from an operator). Our ultimate goal is to perform an autonomous, software-based turbulence correction in real-time. This requires both very fast point-spread function (PSF) estimation and a deconvolution method. In this work we study new efficient ways to describe and estimate the PSF in anisoplanatic conditions.