An Adaptive Padding Correlation Filter With Group Feature Fusion for Robust Visual Tracking  

作　　者：Zihang Feng Liping Yan Yuanqing Xia Bo Xiao 

机构地区：[1]Key Laboratory of Intelligent Control and Decision of Complex Systems,the School of Automation,Beijing Institute of Technology,Beijing 100081,China [2]IEEE [3]the School of Artificial Intelligence,Beijing University of Posts and Telecommunications,Beijing 100876,China

出　　处：《IEEE/CAA Journal of Automatica Sinica》2022年第10期1845-1860,共16页自动化学报（英文版）

基　　金：supported by the National KeyResearch and Development Program of China(2018AAA0103203);the National Natural Science Foundation of China(62073036,62076031);the Beijing Natural Science Foundation(4202071)。

摘　　要：In recent visual tracking research,correlation filter(CF)based trackers become popular because of their high speed and considerable accuracy.Previous methods mainly work on the extension of features and the solution of the boundary effect to learn a better correlation filter.However,the related studies are insufficient.By exploring the potential of trackers in these two aspects,a novel adaptive padding correlation filter(APCF)with feature group fusion is proposed for robust visual tracking in this paper based on the popular context-aware tracking framework.In the tracker,three feature groups are fused by use of the weighted sum of the normalized response maps,to alleviate the risk of drift caused by the extreme change of single feature.Moreover,to improve the adaptive ability of padding for the filter training of different object shapes,the best padding is selected from the preset pool according to tracking precision over the whole video,where tracking precision is predicted according to the prediction model trained by use of the sequence features of the first several frames.The sequence features include three traditional features and eight newly constructed features.Extensive experiments demonstrate that the proposed tracker is superior to most state-of-the-art correlation filter based trackers and has a stable improvement compared to the basic trackers.

关 键 词：Adaptive padding context information correlation filter(CF) feature group fusion robust visual tracking 

分 类 号：TN713[电子电信—电路与系统] TP391.41[自动化与计算机技术—计算机应用技术]