Automatic extraction of secondary video streams

摘要

The automatic generation (702) of one or more secondary video streams based on an input primary video stream (701) may use analytics performed on the video to provide information on targets, events, and/or areas of interest to permit the one or more secondary video streams (703) to concentrate on one or more targets, events, and/or areas of interest.

主权项

1. A system to automatically generate at least one secondary video stream based on an incoming primary video stream, the system comprising:
a user interface; and a computer responsive to the user interface and configured to perform video analytics on the primary video stream to generate one or more analysis results, the one or more analysis results including information relating to at least one element selected from the group consisting of a target, an event, and an area, to detect at least one of a target of interest, an event of interest and an area of interest using the analysis results and at least one of a user specified criterion received via the user interface or an automatically detected criterion, and to classify at least one of the detected target of interest and the detected event of interest, and in response to the classifying, to automatically extract a first secondary video stream comprising at least a portion of at least one of the detected target of interest and the detected event of interest, wherein a field of view of the first secondary video stream is smaller than a field of view of the primary video stream, wherein the computer is configured to detect foreground objects in the primary video stream.