Y. Yitzhaky et al., RESTORATION OF ATMOSPHERICALLY BLURRED IMAGES ACCORDING TO WEATHER-PREDICTED ATMOSPHERIC MODULATION TRANSFER-FUNCTIONS, Optical engineering, 36(11), 1997, pp. 3064-3072
Restoration for actual atmospherically blurred images is performed usi
ng an atmospheric Wiener filter that corrects simultaneously for both
turbulence and aerosol blur by enhancing the image spectrum primarily
at those high frequencies least affected by the jitter or randomness i
n a turbulence modulation transfer function (MTF). The correction is b
ased on weather-predicted rather than measured atmospheric MTFs. Both
turbulence and aerosol MTFs are predicted using meteorological paramet
ers measured with standard weather stations at the time and location w
here the image was recorded. A variety of weather conditions and seaso
ns are considered. Past results have shown good correlation between me
asured and predicted atmospheric MTFs. Here, the predicted MTFs are im
plemented in actual image restoration and quantitative analysis of the
MTF improvement is presented. Corrections are shown also for turbulen
ce blur alone, for aerosol blur alone, and for both together. (C) 1997
Society of Photo-Optical Instrumentation Engineers.