New improved nonuniformity correction for infrared focal plane arrays

作者：Zhou H^*; Lai R; Liu S; Jiang G

来源：Optics Communications, 2005, 245(1-6): 49-53.

DOI：10.1016/j.optcom.2004.09.077

• infrared focal plane arrays
• nonuniformity correction
• S-curve
• two-point
• non-linearity

The nonuniformity correction for infrared focal plane arrays (IRFPA) is generally implemented in engineering by using the two-point correction algorithm. However, its correction precision is reduced by the response non-linearity of IRFPA detectors. In this paper, using the "S"-curve model to approximate the response of IRFPA detectors, an improved two-point correction algorithm is presented. The algorithm firstly transforms the non-linear image data to linear ones, and then uses the normal two-point algorithm to correct the linear data. It can effectively overcome the influence of the response non-linearity of the detectors. The experiments demonstrate the high correction precision of the new correction algorithm.

• 出版日期2005-1-17
• 单位西安电子科技大学