Method for detecting short term unusual events in videos
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United States of America Patent
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Feb 5, 2008
Grant Date -
Dec 30, 2004
app pub date -
Jun 30, 2003
filing date -
Jun 30, 2003
priority date (Note) -
Expired
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Abstract
A method detects short term, unusual events in a video. First, features are extracted features from the audio and the video portions of the video. Segments of the video are labeled according to the features. A global sliding window is applied to the labeled segments to determine global characteristics over time, while a local sliding window is applied only to the labeled segments of the global sliding window to determine local characteristic over time. The local window is substantially shorter in time than the global window. A distance between the global and local characteristic is measured to determine occurrences of the unusual short time events.
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