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Proceedings Paper

Reconstruction of video images through turbulent atmosphere
Author(s): Zhong Liu; Yaohui Qiu; Ruwei Lu
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Paper Abstract

The random noise of turbulent atmosphere cause the serious image quality degradation of video images, the cutoff frequency of result is very low when video images were added to improve the SNR. This phenomenon is very obvious especially in astronomical video imaging. A new point of view speckle image that is neither the maximum value point not the centroid was found. A new image reconstruction method which based on this point was developed. It is a kind of iterative shift-and-add method (ISA). The initial value of this method can be the result of traditional shift-and- add method or the result of speckle interferometry (autocorrelation) and so on. The clean method is used as the deconvolution method of ISA. The diffraction-limited resolution reconstructed results of series video images through turbulent atmosphere show that this method has a high signal-to-noise ratio and wide dynamic range. At last the equipment that we used to detect and save the dim images is introduced and some high resolution results of video images are given.

Paper Details

Date Published: 19 August 1998
PDF: 6 pages
Proc. SPIE 3561, Electronic Imaging and Multimedia Systems II, (19 August 1998); doi: 10.1117/12.319711
Show Author Affiliations
Zhong Liu, Yunnan Observatory Academia Sinica (China)
Yaohui Qiu, Yunnan Observatory Academia Sinica (China)
Ruwei Lu, Yunnan Observatory Academia Sinica (China)

Published in SPIE Proceedings Vol. 3561:
Electronic Imaging and Multimedia Systems II
LiWei Zhou; Chung-Sheng Li, Editor(s)

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