A framework for dialogue detection in movies

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Title: A framework for dialogue detection in movies
Authors: Kotti, M
Kotropoulos, C
Ziòlko, B
Pitas, I
Moschou, V
Item Type: Conference Paper
Abstract: In this paper, we investigate a novel framework for dialogue detection that is based on indicator functions. An indicator function defines that a particular actor is present at each time instant. Two dialogue detection rules are developed and assessed. The first rule relies on the value of the cross-correlation function at zero time lag that is compared to a threshold. The second rule is based on the cross-power in a particular frequency band that is also compared to a threshold. Experiments are carried out in order to validate the feasibility of the aforementioned dialogue detection rules by using ground-truth indicator functions determined by human observers from six different movies. A total of 25 dialogue scenes and another 8 non-dialogue scenes are employed. The probabilities of false alarm and detection are estimated by cross-validation, where 70% of the available scenes are used to learn the thresholds employed in the dialogue detection rules and the remaining 30% of the scenes are used for testing. An almost perfect dialogue detection is reported for every distinct threshold. © Springer-Verlag Berlin Heidelberg 2006.
Issue Date: 1-Jan-2006
URI: http://hdl.handle.net/10044/1/12248
DOI: 10.1007/11848035_50
ISBN: 978-3-540-39392-4
Publisher: Springer
Start Page: 371
End Page: 378
Journal / Book Title: Multimedia Content Representation, Classification, and Security
Copyright Statement: © 2006 Springer-Verlag Berlin Heidelberg. The original publication is available at www.springerlink.com
Conference Name: International Workshop, MRCS 2006
Conference Location: Instanbul, Turkey
Start Date: 2006-09-11
Finish Date: 2006-09-13
Conference Place: Istanbul, Turkey
Appears in Collections:Faculty of Medicine



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