非制冷红外图像非均匀性校正在FPGA上的实现

摘要

The non-uniformity of infrared focal plane array ( IRFPA ) is a key factor that affects the infrared imaging quality. The nonuniformity correction of the uncooled infrared image and its realization in FPGA is presented. Based on analysis of the uncooled infrared image blind element and nonlinear correction, a method of calibration correction with two points plus one point is put forward. The perfect experiment result was achieved by real-time processing which utilyzes FPGA to realize the non-uniformity correction of infrared image. The calibration correction method can improve the correction effect of infrared image uniformity correction and realize the real-time processing of infrared image by achieving the nonuniformity correction in FPGA. It is convenient to integration and transplantation.%红外焦平面阵列(IRFPA)的非均匀性是影响红外系统成像质量的关键性因素,在此提出了一种非制冷红外图像的非均匀性校正及其在FPGA上的实现方法,通过对非制冷红外图像盲元及非均匀校正方法分析,提出了二点加一点定标校正方法,并利用FPGA实现红外图像非均匀校正的实时处理,获得了较好的实验结果.利用二点加一点定标校正方法,可以改善红外图像非均匀性校正效果,用在FPGA上实现非均匀性校正可以实现红外图像的实时处理,便于集成和移植.