Non-uniformity correction method for refrigeration thermal infrared imager with wide temperature range

The invention discloses a non-uniformity correction method for a refrigeration thermal infrared imager with a wide temperature interval. According to the method, a wide temperature interval is divided into different temperature sub-intervals, imaging at different temperatures is carried out in the temperature sub-intervals at the same integration time, the image linearity in the interval is ensured, and the image is uniform in the temperature interval through correction of correction parameters. According to the method, the problems that the refrigeration thermal infrared imager changes along with the temperature, the non-uniformity is poor and the image output quality is poor are solved, the correction mathematical model is simple, the number of parameters is small, engineering implementation is easy, and better support is provided for improving the temperature resolution capability and the image quality of the thermal infrared imager. 本发明公开了一种用于宽温度区间的制冷红外热像仪非均匀性校正方法。本发明首先将宽温度区间划分为不同温度子区间，然后在温度子区间内，用同一个积分时间进