Searching recorded video

摘要

Embodiments of the disclosure provide for systems and methods for creating metadata associated with a video data. The metadata can include data about objects viewed within a video scene and/or events that occur within the video scene. Some embodiments allow users to search for specific objects and/or events by searching the recorded metadata. In some embodiments, metadata is created by receiving a video frame and developing a background model for the video frame. Foreground object(s) can then be identified in the video frame using the background model. Once these objects are identified they can be classified and/or an event associated with the foreground object may be detected. The event and the classification of the foreground object can then be recorded as metadata.

主权项

1. A method for creating metadata associated with a video frame, the method comprising:
receiving a video frame; developing a background model for the video frame; separating a foreground object from the video frame using the background model and a ground plane model; detecting and removing reflections from the video frame responsive to a ratio, of a number of pixels associated with the foreground to a number of pixels associated with the video frame, exceeding a threshold, wherein detecting the reflections comprises
generating a difference image by subtracting an intensity of the video frame from a background image,generating a histogram of the difference image, anddetermining that a reflection is present responsive to a maximum of the histogram being shifted from zero by more than a threshold amount; classifying the foreground object into a classification; and recording the classification of the foreground object in metadata.