TAO Xiao-ping LUO Xiao XUE Dong-lin. Vibration suppression based on multiple integration for staring imaging system in geostationary orbit[J]. Editorial Office of Optics and Precision Engineering, 2013,21(8): 2169-2179
TAO Xiao-ping LUO Xiao XUE Dong-lin. Vibration suppression based on multiple integration for staring imaging system in geostationary orbit[J]. Editorial Office of Optics and Precision Engineering, 2013,21(8): 2169-2179 DOI: 10.3788/OPE.20132108.2169.
Vibration suppression based on multiple integration for staring imaging system in geostationary orbit
According to the image blurs caused by platform vibration in a staring imaging system in the geostationary orbit
a vibration suppression method based on multiple integration was proposed to eliminate the motion blur degradation and a 1D vibration platform was built. A high-speed CMOS image capturing system was used to collect image sequences with different vibration frequencies under different exposure conditions and a phase correlation method based on the energy area center was taken to match imagers in sub-pixels and calculate the relative deflection of each image. Finally
The sub-pixel displacements between the different frames estimated by image registration algorithm were compared with the motion data measured by the displacement sensor and the algorithm precision better than 0.1 pixels was obtained. Furthermore
the sharpnesses of long-exposure images and short-exposure images were compared
and several sharpest short-exposure frames were chosen for sub-pixel image fusion. The experiments indicate that the fusion imager shows better sharpness for a short-exposure frame and the motion blur in the fusion image has been weakened. It has proved that the method of multiple integration and sub-pixel image fusion is powerful of vibration suppression for staring imaging systems in the geostationary orbit.
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