Document Type
Article
Publication Date
7-2011
Publication Source
Optics Express
Abstract
Imagery from microgrid polarimeters is obtained by using a mosaic of pixel-wise micropolarizers on a focal plane array (FPA). Each distinct polarization image is obtained by subsampling the full FPA image. Thus, the effective pixel pitch for each polarization channel is increased and the sampling frequency is decreased. As a result, aliasing artifacts from such undersampling can corrupt the true polarization content of the scene. Here we present the first multi-channel multi-frame super-resolution (SR) algorithms designed specifically for the problem of image restoration in microgrid polarization imagers. These SR algorithms can be used to address aliasing and other degradations, without sacrificing field of view or compromising optical resolution with an anti-aliasing filter. The new SR methods are designed to exploit correlation between the polarimetric channels. One of the new SR algorithms uses a form of regularized least squares and has an iterative solution. The other is based on the faster adaptive Wiener filter SR method. We demonstrate that the new multi-channel SR algorithms are capable of providing significant enhancement of polarimetric imagery and that they outperform their independent channel counterparts.
Inclusive pages
12937-12960
ISBN/ISSN
1094-4087
Document Version
Published Version
Copyright
Copyright © 2011, OSA: The Optical Society
Publisher
OSA: The Optical Society
Volume
19
Peer Reviewed
yes
Issue
14
eCommons Citation
Hardie, Russell C.; LeMaster, Daniel A.; and Ratliff, Bradley M., "Super-Resolution for Imagery from Integrated Microgrid Polarimeters" (2011). Electrical and Computer Engineering Faculty Publications. 59.
https://ecommons.udayton.edu/ece_fac_pub/59
Included in
Computer Engineering Commons, Controls and Control Theory Commons, Optics Commons, Other Physics Commons, Signal Processing Commons
Comments
Optics Express is an open-access journal of OSA: The Optical Society. This article is licensed with the Creative Commons Attribution License (CC-BY) and must be attributed properly. Permission documentation is on file.