Robust Visual Tracking via Structured Multi-Task Sparse Learning
Tianzhu Zhang1; Bernard Ghanem2; Si Liu3; Narendra Ahuja4
2013
发表期刊International Journal of Computer Vision
卷号101期号:2页码:367-383
文章类型期刊
摘要In this paper, we formulate object tracking in a particle filter framework as a structured multi-task sparse learning problem, which we denote as Structured Multi-Task Tracking (S-MTT). Since we model particles as linear combinations of dictionary templates that are updated dynamically, learning the representation of each particle is considered a single task in Multi-Task Tracking (MTT). By employing popular sparsity-inducing mixed norms and we regularize the representation problem to enforce joint sparsity and learn the particle representations together. As compared to previous methods that handle particles independently, our results demonstrate that mining the interdependencies between particles improves tracking performance and overall computational complexity. Interestingly, we show that the popular tracker (Mei and Ling, IEEE Trans Pattern Anal Mach Intel 33(11):2259-2272, 2011) is a special case of our MTT formulation (denoted as the tracker) when Under the MTT framework, some of the tasks (particle representations) are often more closely related and more likely to share common relevant covariates than other tasks. Therefore, we extend the MTT framework to take into account pairwise structural correlations between particles (e.g. spatial smoothness of representation) and denote the novel framework as S-MTT. The problem of learning the regularized sparse representation in MTT and S-MTT can be solved efficiently using an Accelerated Proximal Gradient (APG) method that yields a sequence of closed form updates. As such, S-MTT and MTT are computationally attractive. We test our proposed approach on challenging sequences involving heavy occlusion, drastic illumination changes, and large pose variations. Experimental results show that S-MTT is much better than MTT, and both methods consistently outperform state-of-the-art trackers.
关键词Visual Tracking Particle Filter Graph Structure Sparse Representation Multi-task Learning
WOS标题词Science & Technology ; Technology
学科领域Computer Science
DOI10.1007/s11263-012-0582-z
关键词[WOS]OBJECT TRACKING ; PARTICLE FILTER ; EIGENTRACKING ; MODELS
URL查看原文
收录类别SCI
语种英语
资助项目Advanced Digital Sciences Center from Singapore's Agency for Science, Technology and Research (A*STAR)
WOS研究方向Computer Science
WOS类目Computer Science, Artificial Intelligence
WOS记录号WOS:000314291600008
引用统计
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/13643
专题模式识别国家重点实验室_多媒体计算与图形学
通讯作者Si Liu
作者单位1.Advanced Digital Sciences Center, Singapore
2.King Abdullah University of Science and Technology
3.National University of Singapore
4.University of Illinois at Urbana-Champaign
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GB/T 7714
Tianzhu Zhang,Bernard Ghanem,Si Liu,et al. Robust Visual Tracking via Structured Multi-Task Sparse Learning[J]. International Journal of Computer Vision,2013,101(2):367-383.
APA Tianzhu Zhang,Bernard Ghanem,Si Liu,&Narendra Ahuja.(2013).Robust Visual Tracking via Structured Multi-Task Sparse Learning.International Journal of Computer Vision,101(2),367-383.
MLA Tianzhu Zhang,et al."Robust Visual Tracking via Structured Multi-Task Sparse Learning".International Journal of Computer Vision 101.2(2013):367-383.
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