Two-dimensional restoration of motion-degraded intensified CCD imagery.
A Wiener filter-based deconvolution algorithm is developed to restore vibration-degraded video imagery from an intensified CCD camera. The method is based on the use of azimuth and elevation angular optical line-of-sight data recorded from external sensors to estimate a two-dimensional vibration-blur impulse response on a per frame basis. Flight conditions are reproduced in the laboratory by use of prerecorded in-flight vibration data. The performance of the algorithm varies from frame to frame, following the time-varying characteristics of the vibration-blur impulse response. However, real-time display of the restored video minimizes these effects because of eye integration, and near-full restoration of the original uncorrupted imagery is observed for both high-light- and low-light-level conditions with minimal amplification of noise.
Barnard
K J
KJ
Sensors Directorate, US Air Force Research Laboratory, Building 622, 3109 P Street, Wright-Patterson Air Force Base, Ohio 45433-7700, USA.
White
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Absi
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