Efficient selection of candidates in video content search

Stassinopoulos, GI; Papastefanos, SS

dc.contributor.author	Stassinopoulos, GI	en
dc.contributor.author	Papastefanos, SS	en
dc.date.accessioned	2014-03-01T01:33:20Z
dc.date.available	2014-03-01T01:33:20Z
dc.date.issued	2010	en
dc.identifier.issn	1434-8411	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20385
dc.subject	Bernoulli trials	en
dc.subject	Event detection	en
dc.subject	Search	en
dc.subject	Sequence matching	en
dc.subject	Video indexing	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.classification	Telecommunications	en
dc.subject.other	Bernoulli trials	en
dc.subject.other	Content analysis	en
dc.subject.other	Content search	en
dc.subject.other	Event detection	en
dc.subject.other	Event sequence	en
dc.subject.other	False alarms	en
dc.subject.other	Pre-selection	en
dc.subject.other	Reference source	en
dc.subject.other	Sequence matching	en
dc.subject.other	Time information	en
dc.subject.other	Video contents	en
dc.subject.other	Video indexing	en
dc.subject.other	Video search	en
dc.subject.other	Indexing (of information)	en
dc.subject.other	Location	en
dc.subject.other	Metadata	en
dc.subject.other	Recreation centers	en
dc.subject.other	Visual communication	en
dc.title	Efficient selection of candidates in video content search	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.aeue.2009.04.006	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.aeue.2009.04.006	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	This work presents a framework for video search and retrieval without metadata, based on the sequences of detected events. These sequences encompass time information in the form of interval durations and are the basis of our method. By examining Bernoulli trials we elaborate on the confidence in locating the query clip within the video content. Both the query clip and the video content to be searched are considered as imperfect images of inaccessible reference sources, since some of the events may be miss detected or events may be the outcome of false alarms. Tolerances on the certainty of event presence and placement in time are inherently foreseen. A comparison of event sequences is thus performed between two imperfect images shifted in time by an amount which has to be determined. By counting event mismatches a decision on the presence and location of a query clip within the video content base can be taken. Totally avoiding semantic or content analysis, our approach achieves high speed at the cost of accuracy. It is thus ideally suited for a drastic and very efficient narrowing down of the candidate space. It can be used as a first preselection layer outputting potentially matching candidates for more elaborate but costly content search in the video, audio or even (transcribed) text domain. (C) 2009 Elsevier GmbH. All rights reserved.	en
heal.publisher	ELSEVIER GMBH, URBAN & FISCHER VERLAG	en
heal.journalName	AEU - International Journal of Electronics and Communications	en
dc.identifier.doi	10.1016/j.aeue.2009.04.006	en
dc.identifier.isi	ISI:000278999500007	en
dc.identifier.volume	64	en
dc.identifier.issue	7	en
dc.identifier.spage	650	en
dc.identifier.epage	662	en