[1]WANG Ce,JI Xiaofei,LI Yibo.Study on a simple view-invariant action recognition method[J].CAAI Transactions on Intelligent Systems,2014,9(5):577-583.[doi:10.3969/j.issn.1673-4785.201307057]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
9
Number of periods:
2014 5
Page number:
577-583
Column:
学术论文—机器学习
Public date:
2014-10-25
- Title:
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Study on a simple view-invariant action recognition method
- Author(s):
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WANG Ce; JI Xiaofei; LI Yibo
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School of Automation, Shenyang Aerospace University, Shenyang 110136, China
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- Keywords:
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action recognition; view-invariant; view-space partitioning; interest points; optical flow; mixed feature; hidden Markov model; likelihood probability weighted fusion
- CLC:
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TP391.4
- DOI:
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10.3969/j.issn.1673-4785.201307057
- Abstract:
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It is difficult to recognize the human actions under view changes in daily living. In order to solve this problem, a novel multi-view space hidden Markov model algorithm for view-invariant action recognition based on view space partitioning is proposed in this paper. First, the whole view space is partitioned into multiple sub-view spaces according to the rotation direction of a person relative to camera. Next, a view-robust feature representation by combination of the bag of interest point words in shot length-based video and amplitude histogram of local optical flow is utilized for describing the information of human actions. Thereafter, the human action models in each sub-view space are trained by HMM algorithm. Finally, the unknown view action is recognized via the likelihood probability weighted fusion of the corresponding action models in multi-view space. The experimental results on multi-view action recognition dataset IXMAS demonstrated that the proposed approach is easy to implement and has satisfactory performance for the unknown view action recognition.