摘要
针对电视制导炸弹中弹-目相对运动变化而导致的目标尺度变化、几何形变以及随机因素造成的暂短丢帧现象,文中对相关测度函数进行了基于弹-目距离的中心加权修正,提出了相应的模板更新与修正策略、基于线性预测的目标位置的预测方法、跟踪点的定位方法等,在此基础上,实现了基于加权相关的图像匹配跟踪算法。文中算法获取的跟踪点稳定,有效地解决了常规相关匹配算法跟踪点漂移、速度慢、实时性差的问题。实验结果表明,该方法在复杂背景以及目标尺度发生变化时均能获得良好的跟踪效果。
To overcome target expansion, shape transformation and occasional frame lost due to the missile phase motion of television guided bombs , a modified weight-related function, target tracking strategy, template updating and modification, and tracking point positioning method as well as a prediction method to solve the frame loss of target were proposed. Based on this, an improved weight-related matching tracking algorithm was realized. The algorithm can overcome tracking position excursion and lower calculating speed occurred in routine correlation function matching method. The experimental results show that the target can be tracked smoothly using the method presented in the paper and it is indicated that this method is effective.
出处
《弹箭与制导学报》
CSCD
北大核心
2009年第4期58-62,共5页
Journal of Projectiles,Rockets,Missiles and Guidance
关键词
相关函数
模板匹配
模板修正
目标跟踪
correlation function
template matching
template modification
target tracking
