An in-depth study of sparse codes on abnormality detection

H Ren, H Pan, SI Olsen, MB Jensen… - 2016 13th IEEE …, 2016 - ieeexplore.ieee.org
Sparse representation has been applied successfully in abnormal event detection, in which
the baseline is to learn a dictionary accompanied by sparse codes. While much emphasis is …

A comprehensive study of sparse codes on abnormality detection

H Ren, H Pan, SI Olsen, TB Moeslund - arXiv preprint arXiv:1603.04026, 2016 - arxiv.org
Sparse representation has been applied successfully in abnormal event detection, in which
the baseline is to learn a dictionary accompanied by sparse codes. While much emphasis is …

Greedy vs. l1 convex optimization in sparse coding: Comparative study in abnormal event detection

H Ren, H Pan, SI Olsen, TB Moeslund - ICML'15 Workshop: FEAST 2015 …, 2015 - vbn.aau.dk
Sparse representation has been applied successfully in many image analysis applications,
including abnormal event detection, in which a baseline is to learn a dictionary from the …

A constrained sparse representation approach for video anomaly detection

Y Yi, X Li, R Zhao, C Bi, J Wang… - 2016 IEEE Advanced …, 2016 - ieeexplore.ieee.org
Sparse representation based anomaly detection algorithms have received a widely interest
in recent years. However, most of the existing approaches fail to pay attention to the …

Abnormal event detection via compact low-rank sparse learning

Z Zhang, X Mei, B Xiao - IEEE Intelligent Systems, 2015 - ieeexplore.ieee.org
Sparsity-based methods have been recently applied to abnormal event detection, and have
achieved impressive results. However, most such methods fail to consider the relationship …

Dynamic texture reconstruction from sparse codes for unusual event detection in crowded scenes

J Xu, S Denman, S Sridharan, C Fookes… - Proceedings of the 2011 …, 2011 - dl.acm.org
Unusual event detection in crowded scenes remains challenging because of the diversity of
events and noise. In this paper, we present a novel approach for unusual event detection via …

Abnormal event detection using local sparse representation

H Ren, TB Moeslund - … on Advanced Video and Signal Based …, 2014 - ieeexplore.ieee.org
We propose to detect abnormal events via a sparse subspace clustering algorithm. Unlike
most existing approaches, which search for optimized normal bases and detect abnormality …

Anomaly detection based on stacked sparse coding with intraframe classification strategy

K Xu, X Jiang, T Sun - IEEE Transactions on Multimedia, 2018 - ieeexplore.ieee.org
Anomaly detection in videos is still a challenging task among the computer vision
community. In this paper, an efficient anomaly detection method based on stacked sparse …

Video anomaly detection based on hierarchical clustering

C Zhao, B Li, Q Wang, Z Wang - … , HCC 2018, Mérida, Mexico, December, 5 …, 2019 - Springer
Recently the video surveillance market has developed rapidly, but judging whether there is
abnormal behavior in the video relying on manpower is too expensive. Therefore, a method …

SSPARED: Saliency and sparse code analysis for rare event detection in video

R Sarkar, A Vaccari, ST Acton - 2016 IEEE 12th Image, Video …, 2016 - ieeexplore.ieee.org
The problem of detecting rare and unusual events in video is critical to the analysis of large
video datasets. Such events are identified as those occurrences within a sequence that …