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Automated Character Annotation in Multimedia
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Automated Character Annotation in Multimedia
We describe progress in automatically identifying characters in films and TV series using their detected faces together with readily available annotation in the form of subtitles and transcripts. We describe how the subtitles and transcript can be aligned to give weak supervision on the characters present in a shot (as well as on the actions, emotions, locations etc). The supervision is weak because of correspondence problems and the character may not be visible. The visual problem of face recognition is challenging because faces appear in images at various sizes and pose, and also vary considerably in expression. Fortunately, videos contain multiple face examples of each person in a form that can easily be associated automatically using straightforward visual tracking. These multiple examples reduce the ambiguity of recognition. We show that the text supervision can be strengthened by speaker detection. Although the labelling is still incomplete and noisy, it is then sufficient to learn visual models for recognition, and achieve successful character identification. This is joint work with Mark Everingham and Josef Sivic.
Video Length: 0
Date Found: October 13, 2010
Date Produced: February 14, 2008
View Count: 0
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