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Article
Computationally Efficient Video Restoration for Nyquist Sampled Imaging Sensors Combining an Affine-motion-based Temporal Kalman Filter and Adaptive Wiener Filter
Applied Optics
  • Michael Armand Rucci, University of Dayton
  • Russell C. Hardie, University of Dayton
  • Kenneth J. Barnard, Air Force Wright Laboratory
Document Type
Article
Publication Date
5-1-2014
Abstract

In this paper, we present a computationally efficient video restoration algorithm to address both blur and noise for a Nyquist sampled imaging system. The proposed method utilizes a temporal Kalman filter followed by a correlation-model based spatial adaptive Wiener filter (AWF). The Kalman filter employs an affine background motion model and novel process-noise variance estimate. We also propose and demonstrate a new multidelay temporal Kalman filter designed to more robustly treat local motion. The AWF is a spatial operation that performs deconvolution and adapts to the spatially varying residual noise left in the Kalman filter stage. In image areas where the temporal Kalman filter is able to provide significant noise reduction, the AWF can be aggressive in its deconvolution. In other areas, where less noise reduction is achieved with the Kalman filter, the AWF balances the deconvolution with spatial noise reduction. In this way, the Kalman filter and AWF work together effectively, but without the computational burden of full joint spatiotemporal processing. We also propose a novel hybrid system that combines a temporal Kalman filter and BM3D processing. To illustrate the efficacy of the proposed methods, we test the algorithms on both simulated imagery and video collected with a visible camera.

Inclusive pages
C1-C13
ISBN/ISSN
1559-128X
Publisher
OSA: The Optical Society
Peer Reviewed
Yes
Citation Information
Michael Armand Rucci, Russell C. Hardie and Kenneth J. Barnard. "Computationally Efficient Video Restoration for Nyquist Sampled Imaging Sensors Combining an Affine-motion-based Temporal Kalman Filter and Adaptive Wiener Filter" Applied Optics Vol. 53 Iss. 13 (2014)
Available at: http://works.bepress.com/russell_hardie/21/