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提出了一种基于 FPGA 的红外图像实时非均匀性校正及实时滤波的方法。在 FPGA 内嵌入 NIOS Ⅱ处理器,实现校正系数的运算与实时非均匀性校正,以及用片内存储器实现实时图像滤波。与原始图像相比,校正后图像在均匀性、对比度等方面都有非常明显的改善.整个系统设计方法的优点在于非均匀性校正和图像滤波两种处理过程都在同一块 FPGA 芯片内完成,使整个系统简单一体化。同时,针对不同的红外 CCD 图像传感器,还能在 FPGA 内添加其他处理模块,从而提高了系统的使用范围。
A method of real-time non-uniformity correction and real-time filtering of infrared images based on FPGA is proposed. NIOS Ⅱ embedded in the FPGA processor to achieve the correction factor calculation and real-time non-uniformity correction, and real-time image filtering with on-chip memory. Compared with the original image, the corrected image has a very significant improvement in uniformity, contrast, etc. The advantage of the whole system design method is that non-uniformity correction and image filtering are both processed within the same FPGA chip, Make the whole system simple integration. At the same time, for different infrared CCD image sensor, but also in the FPGA to add other processing modules, thereby increasing the scope of the system.