飞行器尾焰红外图像定位方法研究

Research on the location method of aircraft tail flame with infrared image

针对红外图像测量中,飞行器尾焰受飞行轨迹及气流影响,形态变化复杂,常规目标定位方法难以实现的问题。本文按照目标测量中图像判读的具体要求,依据尾焰形成的原理,采用重心法和Hough变换技术准确检测尾焰的中轴线和前端的半圆。提出了一种基于Hough变换的飞行器尾焰跟踪方法,克服了尾焰形态变化和镜头衍射对目标图像跟踪的影响,实现了尾焰前端的稳定跟踪和精确定位。实验结果表明:该方法跟踪稳定,定位精度高,适用于各种情况下的尾焰定位,且算法简单,执行效率高。

In the infrared image measurement, the tail flame of the aircraft is affected by the flight trajectory and airflow. The morphological change is complex, so the conventional target location method is difficult to realize the loca- tion. Aim at this problem, according to the specific requirements of image interpretation in target measurement and ac- cording to the principle of tail flame formation, a tracking method of aircraft tail flame based on Hough transform is proposed. The center line of tail flame is accurately detected by centroid method and Hough transform. The method o- vercomes the influence of the change of the tail flame and the diffraction of the lens on the target image tracking, and realizes the stable tracking and precise positioning of the tail flame. The experimental results show that the method is stable and accurate, and is suitable for tailing localization in various situations, and the algorithm is simple and has high efficiency.