非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal

论文名字:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal plane arrays

论文地址:https://link.springer.com/content/pdf/10.1186/s40064-016-3534-1.pdf

创新的内容,对经典的两点校正,增加了一个更新,会减去暗平均响应。

两点校正经典公式如下:
非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal
修改以后的公式:
非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal
其中:
非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal
减去的分别是时间和空间的暗平均响应增量。原文对s的解读如下,这里r是指参考照度。
非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal

但是这里并没有说清楚,这个实际和参考值到底是什么意思?

程序更新的流程如下:
非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal

个人理解,这里的参考的照度平局值Sr是指当挡片关闭时,记录时间和空间维度上的响应均值。实际的S是指打开测量时,记录的像素点i的时间和空间上的响应均值。

实验结果:
非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal

非均匀NUC:Nonuniformity correction algorithm with efficient pixel offset estimation for infrared focal
很多指标得到下降,这里ADU是模数转换器.