NDLI: Semantic Event Retrieval from Surveillance Video Databases

Content Provider	IEEE Xplore Digital Library
Author	Xin Chen Chengcui Zhang
Copyright Year	2008
Description	Author affiliation: Dept. of Comput. & Inf. Sci., Univ. of Alabama at Birmingham, Birmingham, AL (Xin Chen; Chengcui Zhang)
Abstract	This paper proposes a framework for retrieving semantic video events from indoor surveillance video databases. The goal is to locate video sequences containing events of interest to the user. This framework starts by tracking objects and segmenting videos into Common Appearance Intervals (CAIs). The spatiotemporal trajectories are obtained, based on which features are extracted for the construction of semantic event models. In the retrieval, the database user interacts with the machine and provides "feedbacks" to the retrieval result. The learning component learns from the spatiotemporal data, the semantic event model as well as the "feedback" and returns the refined result to the user. Specifically, the learning algorithm is developed based on a Coupled Hidden Markov Model (CHMM), which models the interactions of objects in CAIs and recognizes hidden patterns among them. This iterative learning and retrieval process contributes to the bridging of the "semantic gap", and the experimental results show the effectiveness of the proposed framework.
Starting Page	625
Ending Page	630
File Size	663487
Page Count	6
File Format	PDF
ISBN	9780769534541
DOI	10.1109/ISM.2008.82
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-12-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Information retrieval Surveillance Hidden Markov models Spatial databases Spatiotemporal phenomena Feedback Video sequences Feature extraction Data mining Iterative algorithms CHMM Event detection video retrieval surveillance videos
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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