Two-dimensional restoration of motion-degraded intensified CCD imagery

A Wiener filter-based deconvolution algorithm is developed to restore vibra tion-degraded video imagery from an intensified CCD camera. The method is b ased on the use of azimuth and elevation angular optical line-of-sight data recorded from external sensors to estimate a two-dimensional vibration-blu r impulse response on a per frame basis. Flight conditions are reproduced i n the laboratory by use of prerecorded in-fight vibration data. The perform ance of the algorithm varies from frame to frame, following the time-varyin g characteristics of the vibration-blur impulse response. However, real-tim e display of the restored video minimizes these effects because of eye inte gration, and near-full restoration of the original uncorrupted imagery is o bserved for both high-light- and low-light-level conditions with minimal am plification of noise. (C) 1999 Optical Society of America.