Type

Conference Proceedings

Authors

Noel E. O'Connor
Remi Trichet
Suzanne Little
Iveel Jargalsaikhan

Subjects

Computer Science

Topics
machine learning svm classifier action recognition video surveillance temporal human action recognition clustering algorithm feature representation

Action recognition in video using a spatial-temporal graph-based feature representation (2015)

Abstract We propose a video graph based human action recognition framework. Given an input video sequence, we extract spatio-temporal local features and construct a video graph to incorporate appearance and motion constraints to reflect the spatio-temporal dependencies among features. them. In particular, we extend a popular dbscan density-based clustering algorithm to form an intuitive video graph. During training, we estimate a linear SVM classifier using the standard Bag-of-words method. During classification, we apply Graph-Cut optimization to find the most frequent action label in the constructed graph and assign this label to the test video sequence. The proposed approach achieves stateof-the-art performance with standard human action recognition benchmarks, namely KTH and UCF-sports datasets and competitive results for the Hollywood (HOHA) dataset.
Collections Ireland -> Dublin City University -> Publication Type = Conference or Workshop Item
Ireland -> Dublin City University -> Subject = Computer Science
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: INSIGHT Centre for Data Analytics
Ireland -> Dublin City University -> Subject = Computer Science: Machine learning
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres

Full list of authors on original publication

Noel E. O'Connor, Remi Trichet, Suzanne Little, Iveel Jargalsaikhan

Experts in our system

1
Noel E. O'Connor
Dublin City University
Total Publications: 474
 
2
Remi Trichet
Dublin City University
Total Publications: 5
 
3
Suzanne Little
Dublin City University
Total Publications: 36
 
4
Iveel Jargalsaikhan
Dublin City University
Total Publications: 9