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  4. Absolute and differential G-tilt in turbulence: Theory and applications
 
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2016
Conference Paper
Title

Absolute and differential G-tilt in turbulence: Theory and applications

Abstract
Artificial motion and warping of images taken at long range is one of the most significant and troublesome effects of atmospheric turbulence. It is important to understand and model this effect correctly in order to: 1) fully characterize turbulence between the target and the observer, 2) devise efficient post-processing strategies for artificial motion correction, and 3) exploit information about statistics of this atmospheric motion to distinguish between real and fake movement in a scene. This paper discusses two types of motion: G-tilt and Z-tilt, highlighting the differences between them. Optimal image block size for de-warping algorithms and bandwidth considerations are given special attention. Finally, strategies for turbulence characterization based on differential image motion are discussed.
Author(s)
Gladysz, Szymon  
Mainwork
Optics in Atmospheric Propagation and Adaptive Systems XIX  
Conference
Conference "Optics in Atmospheric Propagation and Adaptive Systems" 2016  
DOI
10.1117/12.2241016
Language
English
Fraunhofer-Institut für Optronik, Systemtechnik und Bildauswertung IOSB  
Keyword(s)
  • atmospheric turbulence

  • tilt anisoplanatism

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