Laplacian group sparse modeling of human actions
Laplacian group sparse modeling of human actions
复制标题
人类行为的拉普拉斯群稀疏建模
DOI:
10.1016/j.patcog.2014.02.007
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发表时间:
2014-08
影响因子:
8
通讯作者:
Dong, Feng
中科院分区:
文献类型:
--
作者:
Yang, Hao;Jiao, L. C.;Yang, Yang;Dong, Feng
Recently, many local-feature based methods have been proposed for feature learning to obtain a better high-level representation of human behavior. Most of the previous research ignores the structural information existing among local features in the same video sequences, while it is an important clue to distinguish ambiguous actions. To address this issue, we propose a Laplacian group sparse coding for human behavior representation. Unlike traditional methods such as sparse coding, our approach prefers to encode a group of relevant features simultaneously and meanwhile allow as less atoms as possible to participate in the approximation so that video-level sparsity is guaranteed. By incorporating Laplacian regularization the method is capable to ensure the similar approximation of closely related local features and the structural information is successfully preserved. Thus, a compact but discriminative human behavior representation is achieved. Besides, the objective of our model is solved with a closed-form solution, which reduces the computational cost significantly. Promising results on several popular benchmark datasets prove the efficiency and effectiveness of our approach.
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DOI:
10.5244/c.23.124
发表时间:
2009-09
期刊:
--
影响因子:
--
作者:
Heng Wang;M. M. Ullah-M.;Alexander Kläser;I. Laptev;C. Schmid
通讯作者:
Heng Wang;M. M. Ullah-M.;Alexander Kläser;I. Laptev;C. Schmid
DOI:
10.5244/c.22.99
发表时间:
2008-09
期刊:
--
影响因子:
--
作者:
Alexander Kläser;Marcin Marszalek;C. Schmid
通讯作者:
Alexander Kläser;Marcin Marszalek;C. Schmid
影响因子:
19.5
作者:
Laptev, I
通讯作者:
Laptev, I
DOI:
10.1109/tpami.2011.70
发表时间:
2011-11-01
影响因子:
23.6
作者:
Gall, Juergen;Yao, Angela;Lempitsky, Victor
通讯作者:
Lempitsky, Victor
DOI:
10.1109/iccv.2011.6126345
发表时间:
2011-11
期刊:
2011 International Conference on Computer Vision
影响因子:
--
作者:
Chuan Sun;Imran N. Junejo;H. Foroosh
通讯作者:
Chuan Sun;Imran N. Junejo;H. Foroosh