The algorithm analysis on non-uniformity correction based on LMS adaptive filtering

Dongjun Zhan; Qun Wang; Chensheng Wang; Huawang Chen

doi:10.1117/12.869529

4 November 2010 The algorithm analysis on non-uniformity correction based on LMS adaptive filtering

Dongjun Zhan, Qun Wang, Chensheng Wang, Huawang Chen

Proceedings Volume 7854, Infrared, Millimeter Wave, and Terahertz Technologies; 78541N (2010) https://doi.org/10.1117/12.869529
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The traditional least mean square (LMS) algorithm has the performance of good adaptivity to noise, but there are several disadvantages in the traditional LMS algorithm, such as the defect in desired value of pending pixels, undetermined original coefficients, which result in slow convergence speed and long convergence period. Method to solve the desired value of pending pixel has improved based on these problems, also, the correction gain and offset coefficients worked out by the method of two-point temperature non-uniformity correction (NUC) as the original coefficients, which has improved the convergence speed. The simulation with real infrared images has proved that the new LMS algorithm has the advantages of better correction effect. Finally, the algorithm is implemented on the hardware structure of FPGA+DSP.

Citation Download Citation

Dongjun Zhan, Qun Wang, Chensheng Wang, and Huawang Chen "The algorithm analysis on non-uniformity correction based on LMS adaptive filtering", Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78541N (4 November 2010); https://doi.org/10.1117/12.869529

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