【作者】 黄战华； 曹永超；

【Author】 HUANG Zhanhua CAO Yongchao(Tianjin University, 300072)

【机构】 天津大学精仪学院；

【摘要】 由于红外焦平面阵列探测器各像元的响应度的不一致,需要对图像进行非均匀性校正.系统采用MCU作为主控制单元,DSP只用作数据处理,使用FIFO作为输入缓存,BUFF作为输出缓存,输入输出使用DSP不同的数据接口,实现输入输出数据的并行传输,传输采用DSP的EDMA方式,不耗费处理器时间.试验中采用多段式分段线性插值算法,经过硬件仿真,系统完全可以达到实时校正的要求.更多还原

【Abstract】 Since the responsivity of each pixel of infrared focal plane array is unconformable, it is necessary to do nonuniformity correction (NUC) for infrared image. The System employs MCU as the main control unit, DSP as the processing unit. FIFO is used as input buffer and BUFF as output buffer. For using different data interface of the DSP for input and output, it can realize parallel transmission for the data. The EDMA mode is adopted in data transmission, which does not occupy the processor time. The experiment results show that the system completely meets the requirement of real-time correlation.更多还原