Abnormal Event Detection Using Local Sparse Representation

Research output: Research - peer-reviewArticle in proceeding

Abstract

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 based on least square error or reconstruction error from the learned normal patterns, we propose an abnormality measurement based on the difference between the normal space and local space. Specifically, we provide a reasonable normal bases through repeated K spectral clustering. Then for each testing feature we first use temporal neighbors to form a local space. An abnormal event is found if any abnormal feature is found that satisfies: the distance between its local space and the normal space is large. We evaluate our method on two public benchmark datasets: UCSD and Subway Entrance datasets. The comparison to the state-of-the-art methods validate our method's effectiveness.
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Details

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 based on least square error or reconstruction error from the learned normal patterns, we propose an abnormality measurement based on the difference between the normal space and local space. Specifically, we provide a reasonable normal bases through repeated K spectral clustering. Then for each testing feature we first use temporal neighbors to form a local space. An abnormal event is found if any abnormal feature is found that satisfies: the distance between its local space and the normal space is large. We evaluate our method on two public benchmark datasets: UCSD and Subway Entrance datasets. The comparison to the state-of-the-art methods validate our method's effectiveness.
Original languageEnglish
Title of host publication2014 11th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS)
Number of pages6
PublisherIEEE Computer Society Press
Publication date2014
Pages125-130
ISBN (Electronic)978-1-4799-4871-0
DOI
StatePublished - 2014
Publication categoryResearch
Peer-reviewedYes
EventAVSS 2014 - Korea University, Seoul, Korea, Republic of
Duration: 26 Aug 201429 Aug 2014

Conference

ConferenceAVSS 2014
LocationKorea University
LandKorea, Republic of
BySeoul
Periode26/08/201429/08/2014
ID: 198824335