HE Ming, WANG Xin-sai, LU Jian-fang, WU Qiang, XU Hua-liang. New algebraic scene-based non-uniformity correction in infrared focal plane array[J]. Journal of Applied Optics, 2011, 32(6): 1217-1221.
Citation: HE Ming, WANG Xin-sai, LU Jian-fang, WU Qiang, XU Hua-liang. New algebraic scene-based non-uniformity correction in infrared focal plane array[J]. Journal of Applied Optics, 2011, 32(6): 1217-1221.
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New algebraic scene-based non-uniformity correction in infrared focal plane array

  • Lab for Infrared and Imaging Navigation Technologies,Air Defense Forces Command Academy,Zhengzhou 450052,China

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  • Since traditional non-uniformity correction algorithm has slow convergence and inaccurate prediction, a multi-scale optical flow motion estimation based algorithm is developed. Random image noise between frames is filtered by time-domain low-pass filter, and the next frame is estimated by using the multiscale optical flow, then the non-uniformity correction is carried out. This algorithm is demonstrated in the thermal imager developed by us. Compared with the traditional non-uniformity correction algorithm, the convergence rate of this algorithm decreases form 60 frames to 25 frames; the precision of prediction is improved by 100%, and the corrected image variance is decreased from 76.539 to 32.482.
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