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Optical Engineering

Quality metric in matched Laplacian of Gaussian response domain for blind adaptive optics image deconvolution
Author(s): Shiping Guo; Rongzhi Zhang; Yikang Yang; Rong Xu; Changhai Liu; Jisheng Li
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Paper Abstract

Adaptive optics (AO) in conjunction with subsequent postprocessing techniques have obviously improved the resolution of turbulence-degraded images in ground-based astronomical observations or artificial space objects detection and identification. However, important tasks involved in AO image postprocessing, such as frame selection, stopping iterative deconvolution, and algorithm comparison, commonly need manual intervention and cannot be performed automatically due to a lack of widely agreed on image quality metrics. In this work, based on the Laplacian of Gaussian (LoG) local contrast feature detection operator, we propose a LoG domain matching operation to perceive effective and universal image quality statistics. Further, we extract two no-reference quality assessment indices in the matched LoG domain that can be used for a variety of postprocessing tasks. Three typical space object images with distinct structural features are tested to verify the consistency of the proposed metric with perceptual image quality through subjective evaluation.

Paper Details

Date Published: 28 April 2016
PDF: 8 pages
Opt. Eng. 55(4) 043108 doi: 10.1117/1.OE.55.4.043108
Published in: Optical Engineering Volume 55, Issue 4
Show Author Affiliations
Shiping Guo, Xi'an Jiaotong Univ. (China)
Rongzhi Zhang, Xi'an Satellite Control Ctr. (China)
Yikang Yang, Xi'an Jiaotong Univ. (China)
Rong Xu, Xi'an Satellite Control Ctr. (China)
Changhai Liu, Xi'an Satellite Control Ctr. (China)
Jisheng Li, Xi'an Jiaotong Univ. (China)

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