红外焦平面阵列普遍存在非均匀性问题,国内外已经提出众多解决该问题的方法,其中最有价值的是两点非均匀校正法.在分析两点校正法的基础上,结合红外焦平面阵列非均匀模型,提出一种改进的多点非均匀性校正算法并给出其实现方法.该方法动态范围大,能有效克服由红外焦平面探测单元的非线性响应特性带来的均匀性影响,并且具有校正精度高、处理速度快和易于实时处理等优点.工程中已经证明该方法的有效性.最后给出了工程结果.

Nonuniformity exists in all IRFPA. Lots of nonuniformity correction methods have been developed to solve the problem. One of the most valuable methods is two-point correction algorithm. Based on the analysis of two-point correction algorithm, an improved multi-point algorithm is put forward and its implementation is also discussed. This algorithm has large dynamic range to effectively overcome nonuniformity brought by nonlinear characteristic of IRFPA detector units. And it has the advantages of high precision, fast processing speed, and easy to realize in real time. Its effectiveness is demonstrated in engineering. The experimental results are given in the end.