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Optical Engineering

APEX blind deconvolution of color Hubble space telescope imagery and other astronomical data
Author(s): Alfred S. Carasso
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Paper Abstract

The APEX method is a noniterative direct blind deconvolution technique that can sharpen certain kinds of high-resolution images in quasi real time. The method is predicated on a restricted class of blurs, in the form of 2-D radially symmetric, bell-shaped, heavy-tailed, probability density functions. Not all images can be usefully enhanced with the APEX method. However, the method is found effective on a broad class of galaxy images, including Hubble space telescope advanced camera for surveys (ACS) color imagery. APEX-detected optical transfer functions that successfully sharpen these images are very far from Gaussian, and of a type seldom found in the imaging literature. Several examples are given where significantly sharper and visually striking reconstructions are obtained, with sharpening confirmed by the tripling or quadrupling of image gradient norms.

Paper Details

Date Published: 1 October 2006
PDF: 15 pages
Opt. Eng. 45(10) 107004 doi: 10.1117/1.2362579
Published in: Optical Engineering Volume 45, Issue 10
Show Author Affiliations
Alfred S. Carasso, National Institute of Standards and Technology (United States)


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