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Software-based turbulence mitigation of short exposure image data with motion detection and background segmentation

 
: Huebner, Claudia S.

:
Postprint urn:nbn:de:0011-n-1908800 (1.7 MByte PDF)
MD5 Fingerprint: 8d3d2f886927ea3d0edf00d71980ca54
Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Erstellt am: 12.7.2012


Stein, K. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Optics in Atmospheric Propagation and Adaptive Systems XIV : 20.09.2011, Prague, Chech Republic
Bellingham, WA: SPIE, 2011 (Proceedings of SPIE 8178)
ISBN: 978-0-8194-8805-3
ISBN: 978-0-81948-805-3
Paper 81780K
Conference "Optics in Atmospheric Propagation and Adaptive Systems" <14, 2011, Prague>
Englisch
Konferenzbeitrag, Elektronische Publikation
Fraunhofer IOSB ()
atmospheric effects; turbulence mitigation; image restoration; motion-detection; background segmentation

Abstract
The degree of image degradation due to atmospheric turbulence is particularly severe when imaging over long horizontal paths since the turbulence is strongest close to the ground. The most pronounced effects include image blurring and image dancing and in case of strong turbulence image distortion as well. To mitigate these effects a number of methods from the field of image processing have been proposed most of which aim exclusively at the restoration of static scenes. But there is also an increasing interest in advancing turbulence mitigation to encompass moving objects as well. Therefore, in this paper a procedure is described that employs block-matching for the segmentation of static scene elements and moving objects such that image restoration can be carried out for both separately. This way motion blurring is taken into account in addition to atmospheric blurring, effectively reducing motion artefacts and improving the overall restoration result. Motion-compensated averaging with subsequent blind deconvolution is used for the actual image restoration.

: http://publica.fraunhofer.de/dokumente/N-190880.html