ZHI Xi-yang, HU Jian-ming, LI Wen-feng etc. Satellite image restoration based on measured vibration information and requirements[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 632-639
ZHI Xi-yang, HU Jian-ming, LI Wen-feng etc. Satellite image restoration based on measured vibration information and requirements[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 632-639 DOI: 10.3788/OPE.20162413.0632.
Satellite image restoration based on measured vibration information and requirements
Aiming at the practical application problem of restoration for degraded image owing to satellite vibrations
a restoration method based on measured vibration information and the specification requirements were proposed. Firstly
effects of vibrations on image quality were analyzed based on imaging physical-process of TDICCD push-broom system. Then the methods of image restoration and corresponding parameter calculation were presented. Secondly
influence law of vibration measurement error on restored image quality were discussed in the cases of different vibration frequencies
amplitudes and TDIs. Finally
the quantitative relation between the measurement error and restoration performance was established by experiments. Experimental results indicate that the restored images can satisfy the practical requirement that SSIM is higher than 0.9 and geometric distortion is less than 0.1
when the measurement error should be less than 0.05 pixel
and vibrations with frequencies over 150 Hz should be isolated.
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references
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