自适应模型更新相关滤波目标跟踪方法

Adaptive model update target tracking method with related filtering

为了解决目标因遮挡、跟踪框发生漂移后相关滤波跟踪算法仍持续更新目标模型和滤波器模型,导致背景信息被更新到目标模型和滤波器模型中的情况,提出一种自适应模型更新策略。采用相关滤波方法得到新的目标位置;提取新目标位置的统计协方差特征并计算其与协方差模板的相似性;根据相似性判断是否更新目标模型和滤波器模型。实验结果表明:所提方法有效解决了因目标形变、遮挡等情况导致目标模型和滤波器模型的更新问题,提高了相关滤波目标跟踪的精度。

In order to solve the problem of obscuring of target,the related filtering tracking algorithm keeps updating the target model and the filter model after the tracking frame drifts,which cause background information is updated into the target model and filter model,an adaptive model updating strategy is proposed. New target position is obtained by using the correlation filtering method. Statistical covariance feature of the new target position is extracted and its similarity with the covariance template is calculated. Judge whether update target model and filter model according to similarity or not. The experimental results show that the proposed method effectively solves the problem of target model updating and filter model updating due to target deformation and occlusion,and improves the precision of the related filtering target tracking.