[1]LI Guopeng,WANG Lianqing,HAN Kun,et al.Action segmentation based on multigraph fusion constraint semi-nonnegative matrix factorization[J].CAAI Transactions on Intelligent Systems,2023,18(6):1223-1232.[doi:10.11992/tis.202303049]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
18
Number of periods:
2023 6
Page number:
1223-1232
Column:
学术论文—机器感知与模式识别
Public date:
2023-11-05
- Title:
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Action segmentation based on multigraph fusion constraint semi-nonnegative matrix factorization
- Author(s):
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LI Guopeng1; WANG Lianqing2; 3; HAN Kun1; WANG Yuhong4; SONG Dan1; YU Li1; 2
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1. Test Center, National University of Defense Technology, Xi’an 710106, China;
2. College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China;
3. College of Information and Communication, National University of Defense Technology, Wuhan 430035, China;
4. China Industrial Control Systems Cyber Emergency Response Team, Beijing 100040, China
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- Keywords:
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action segmentation; clustering; semi-NMF; multigraph fusion constraint; structural similarity; measurement similarity; low-dimensional representation; k-nearest neighbor graph
- CLC:
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TP391
- DOI:
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10.11992/tis.202303049
- Abstract:
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Most clustering-based action segmentation methods mainly exploit the structure similarity information between adjacent frames (points) in the sequence to improve the accuracy of action segmentation. These methods improve the consistency of segmentation inside each action but introduce potential issues for accurately segmenting action boundaries. Hence, this paper presents a novel action segmentation method based on multigraph fusion constraint semi-nonnegative matrix factorization (MGSeNMF). In this method, the structural and measurement similarity information is fused to build a multigraph fusion constraint term, which is fused to semi-NMF to obtain a low-dimensional representation. A k-nearest neighbor graph is also generated for the action sequences, realizing accurate segmentation using the graph cut method. Experimental results on two kinds of real-action datasets show that MGSeNMF can accurately divide the boundary of actions while maintaining consistent segmentation inside each action. Thus, the proposed method improves the accuracy of segmentation and efficiency of running time significantly.