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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 27 — Dec. 19, 2011
  • pp: 26208–26231

Fast super-resolution with affine motion using an adaptive Wiener filter and its application to airborne imaging

Russell C. Hardie, Kenneth J. Barnard, and Raul Ordonez  »View Author Affiliations

Optics Express, Vol. 19, Issue 27, pp. 26208-26231 (2011)

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Fast nonuniform interpolation based super-resolution (SR) has traditionally been limited to applications with translational interframe motion. This is in part because such methods are based on an underlying assumption that the warping and blurring components in the observation model commute. For translational motion this is the case, but it is not true in general. This presents a problem for applications such as airborne imaging where translation may be insufficient. Here we present a new Fourier domain analysis to show that, for many image systems, an affine warping model with limited zoom and shear approximately commutes with the point spread function when diffraction effects are modeled. Based on this important result, we present a new fast adaptive Wiener filter (AWF) SR algorithm for non-translational motion and study its performance with affine motion. The fast AWF SR method employs a new smart observation window that allows us to precompute all the needed filter weights for any type of motion without sacrificing much of the full performance of the AWF. We evaluate the proposed algorithm using simulated data and real infrared airborne imagery that contains a thermal resolution target allowing for objective resolution analysis.

© 2011 OSA

OCIS Codes
(100.6640) Image processing : Superresolution
(110.3080) Imaging systems : Infrared imaging
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Imaging Systems

Original Manuscript: August 29, 2011
Revised Manuscript: October 18, 2011
Manuscript Accepted: October 20, 2011
Published: December 8, 2011

Virtual Issues
Vol. 7, Iss. 2 Virtual Journal for Biomedical Optics

Russell C. Hardie, Kenneth J. Barnard, and Raul Ordonez, "Fast super-resolution with affine motion using an adaptive Wiener filter and its application to airborne imaging," Opt. Express 19, 26208-26231 (2011)

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