基于FPGA的红外图像实时非均匀性校正

Real-time infrared image nonuniformity correction base on FPGA

红外焦平面阵列是当今红外成像技术发展的主要方向,它灵敏度高,探测能力强,但也有其非均匀性较差的缺点。非均匀性校正技术对于红外焦平面阵列的应用起着关键的作用,两点校正算法作为一种实用、高效的校正算法被广泛的应用,它流程简单固定,非常适合用FPGA实现。文章介绍了利用FPGA硬件实现焦平面探测器非均匀性的两点校正算法,并对非均匀性漂移的现象采取了实时修正,部分弥补了两点校正算法的不足,达到了预期效果,满足系统要求。

IRFPA is the main direction of infrared imaging technology at present.It has high sensitivity and detection capability,but it also has disadvantages such as bad non-uniformity.Non-uniformity correction is a key technology in the application of IRFPA.As an applicable and real time nonuniformity correction method,the two points correction algorithmic is used widely.Its flow is simple,and fixed,and it is also suitable to be implemented by FPGA.In this paper,the two points method of nonuniformity correction using the FPGA hardware is introduced.