SYSTEM AND METHOD FOR REAL-TIME NEW EVENT DETECTION ON VIDEO STREAMS

摘要

Techniques are disclosed for detecting new events in a video stream that yield improved detection efficiency in real time. For example, a method determines whether a given event is a new event in a video stream. The video stream includes a plurality of events. A first step extracts a first set of features (e.g., text features) from the given event. The first set of features is computationally less expensive to process as compared to a second set of features (e.g., image features) associated with the given event. A second step computes one or more first dissimilarity values between the given event and one or more previous events in the video stream using only the first set of features when one or more first dissimilarity criteria exist. A third step determines whether the given event is a new event based on the one or more computed first dissimilarity values.

主权项

1. A method of real-time new event detection to capture new-event video clips that present previously unseen events in a video streaming environment, the method comprising the step of providing a multi-stage sequential filtering process, the process comprising steps of:
identifying relevant features; ranking the features based on computational effort to derive or extract the features; and forming one or more multi-stage sequential filters based on the ranked features, where the more easily computed features are used before less easily computed features.