基于NiosⅡ的非制冷红外图像处理系统研究

Study of uncooled infrared image processing system based on Nios Ⅱ

摘要: 设计一个非制冷红外图像处理系统，该系统放弃了目前普遍应用的数字信号处理器（DSP）＋现场可编程门阵列（FPGA）的系统构架，采用基于FPGA的NiosⅡ嵌入式处理器的系统构架，实现了系统的小型化。提出一种基于流水线结构的信号处理方法，并利用NiosⅡ嵌入式处理器软硬件开发工具，实现了在该系统上对非制冷红外焦平面阵列非均匀性进行校正和盲元补偿的实时处理，降低了系统的工作频率。实验结果表明：该系统能够对非制冷红外图像进行实时处理，工作性能稳定，处理效果良好。

Abstract: A miniaturized uncooled infrared image processing system is designed by adopting the structure of Field Programmable Gate Array (FPGA) embedded with NiosⅡ processor instead of Digital Signal Processor (DSP) +FPGA structure. A signal processing method based on pipelining model is proposed and applied in the system with the hardware and software development tools of NiosⅡ embedded processor. As indicated by the experiment result, the system can process the uncooled infrared image in real time. It has the merits of good performance and small volume.