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兵工学报  2015 

制冷焦平面高动态范围热成像非均匀校正系数与积分时间的关系

DOI: 10.3969/j.issn.1000-1093.2015.05.011, PP. 839-845

Keywords: 兵器科学与技术,制冷红外焦平面阵列,非均匀校正,两点非均匀校正,校正参数,积分时间,高动态范围

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Abstract:

?变积分时间是实现高动态范围(HDR)热成像的最有效手段,但积分时间的变化会使得系统的残留非均匀性噪声也发生变化。从红外系统响应模型出发,推导了两点非均匀校正(NUC)法的增益和偏置校正参数与积分时间的关系,结果表明:增益校正参数与积分时间无关,只有偏置校正参数与积分时间有关;并通过实际热成像系统的测试对比实验,证明了上述结论的正确性。研究结果为变积分时间的HDR热成像系统的NUC提供了合理、可行的校正依据,可极大的简化变积分时间的HDR热成像系统NUC处理过程。

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