基于FPGA的红外焦平面阵列实时非均匀性校正

Real-time Nonuniformity Correction of IRFPA based on FPGA

提出了一种以FPGA为核心的焦平面器件实时非均匀性校正方法,能够实时地完成非均匀性校正系数的在线计算、红外图像的非均匀性校正。采用浮点乘法器、浮点除法器进行运算,提高了计算精度。采用并行处理结构和流水线技术,使系统的处理速度达到20 M×12 bit/s,特别适用于大面阵、高帧频红外焦平面成像系统。系统仅使用一片FPGA,有利于系统的小型化。

The two-point correction method is analyzed,and a new real-time nonuniformity correction algorithm, for IRFPA is proposed by using field programmable gate array （FPGA）. The high operation precision is obtained by using floating-point multiplier, floating point divider. At the same time, by using parallel architecture and pipeline technique, the system processing speed is as high as 20 M × 12 bit/s. It is approciate greatly to large arrays and high frame frequency infrared imaging system. The system is miniaturized by using only one FPGA.