For the problem of rapid change in the size and pose of a target during infrared imaging terminal guidance,the region covariance matrix based particle filter is proposed to precisely track a target in this paper.In order to suppress image details and precisely track a target in the infrared imaging terminal guidance,the position and size of a target are served as the target state which is recursively estimated by the particle filter in the real-time frames,and the tracking precision is improved by the iterative location of a target in the image pyramid.For adapting the variable size of a target,the proposed approach can adjust the size of tracking window by timely update the target template(region covariance matrix).The region covariance matrix as the target feature discriptor consists of multiple image features of a target to locate the frame-to-frame target by feature matching.Experimental results demonstrate that the approach can adapt rapid change in the size of target and presicely track target during infrared imaging terminal guidance,and has the good robustnes.
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李少军,李立仁,刘忠领,朱振福.基于区域协方差矩阵的末制导目标跟踪[J].激光与红外,2010,40(3):330~333 LI Shao-jun, LI Li-ren, LIU Zhong-ling, ZHU Zhen-fu. Terminal guidance target tracking based on region covariance matrix[J]. LASER & INFRARED,2010,40(3):330~333