Inverse Sparse Tracker With a Locally Weighted Distance Metric
Inverse Sparse Tracker With a Locally Weighted Distance Metric
复制标题
具有局部加权距离度量的逆稀疏跟踪器
DOI:
10.1109/tip.2015.2427518
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发表时间:
2015-04
期刊:
影响因子:
--
通讯作者:
Ming-Hsuan Yang
中科院分区:
文献类型:
--
作者:
Dong Wang;Huchuan Lu;Ziyang Xiao;Ming-Hsuan Yang
Sparse representation has been recently extensively studied for visual tracking and generally facilitates more accurate tracking results than classic methods. In this paper, we propose a sparsity-based tracking algorithm that is featured with two components: 1) an inverse sparse representation formulation and 2) a locally weighted distance metric. In the inverse sparse representation formulation, the target template is reconstructed with particles, which enables the tracker to compute the weights of all particles by solving only one ℓ1 optimization problem and thereby provides a quite efficient model. This is in direct contrast to most previous sparse trackers that entail solving one optimization problem for each particle. However, we notice that this formulation with normal Euclidean distance metric is sensitive to partial noise like occlusion and illumination changes. To this end, we design a locally weighted distance metric to replace the Euclidean one. Similar ideas of using local features appear in other works, but only being supported by popular assumptions like local models could handle partial noise better than holistic models, without any solid theoretical analysis. In this paper, we attempt to explicitly explain it from a mathematical view. On that basis, we further propose a method to assign local weights by exploiting the temporal and spatial continuity. In the proposed method, appearance changes caused by partial occlusion and shape deformation are carefully considered, thereby facilitating accurate similarity measurement and model update. The experimental validation is conducted from two aspects: 1) self validation on key components and 2) comparison with other state-of-the-art algorithms. Results over 15 challenging sequences show that the proposed tracking algorithm performs favorably against the existing sparsity-based trackers and the other state-of-the-art methods.
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影响因子:
10.6
作者:
Mei, Xue;Ling, Haibin;Bai, Li
通讯作者:
Bai, Li
影响因子:
10.6
作者:
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通讯作者:
Yang, Ming-Hsuan
DOI:
--
发表时间:
2009
期刊:
--
影响因子:
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作者:
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通讯作者:
Xue Mei;Haibin Ling
影响因子:
10.6
作者:
Yang, Jianchao;Wright, John;Ma, Yi
通讯作者:
Ma, Yi
DOI:
--
发表时间:
2004-06
期刊:
--
影响因子:
--
作者:
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通讯作者:
J. G. Allen;R. Xu;Jesse S. Jin