摘要
为提高某中波红外探测器的图像质量,设计了基于FPGA的红外图像实时处理系统,系统能够完成实时的非均匀性校正与盲元补偿处理。介绍了目前常用的非均匀性校正、盲元识别和补偿算法,并结合实际工程需求采用多点法进行非均匀性校正以及8点平均法进行盲元补偿。在仿真实验成功的基础上,基于FPGA平台构建了硬件平台。系统可以实现系数自定义更新,可以手动或自动完成非均匀性较正系数计算,以及实现盲元列表的自动更新操作。利用某国产中波红外探测器对处理系统进行了测试试验,实验结果表明:校正后图像非均匀性<0.3%,盲元率<0.001%。系统工作稳定、可靠,图像处理满足实时性和精度要求。
In order to improve the image quality of certain medium wave infrared detector,a infrared image re-al-time processing system based on FPGA is designed,which can accomplish nonuniformity correction and blind pixel compensation in real time.Some widely used nonuniformity correction algorithms,blind pixel de-tection and compensation algorithms are introduced.Combined with actual project requirements,nonuniformity correction with multi-point method and blind pixel compensation with eight-point average method are realized on the FPGA platform on the basis of successful simulation.User-defined coefficient updating,non-correction coefficients manually or automatically calculating and blind pixel lists automatically updating are realized by the system.The processing system is tested using certain domestic medium wave infrared detector,and the re-sult shows that the nonuniformity of corrected image is less than 0.3% and the blind pixel of corrected image is less than 0.001%.The system is stable and reliable,which satisfies the requirements of image processing in real-time and accurancy.
出处
《中国光学》
EI
CAS
CSCD
2016年第3期385-393,共9页
Chinese Optics
基金
中国科学院国防科技创新基金项目(No.CXJJ-16-S038)~~
关键词
红外探测器
非均匀性校正
盲元补偿
infrared imaging detector
nonuniformity correction
blind pixel compensation
