Multi-dimensional virtual beam detection for video analytics

摘要

Video analytics is used to track an object of interest represented in video data representing the field of view of a scene observed by a video camera. A multi-dimensional virtual beam is used to detect whether the tracked object of interest is continually present in a detection zone within the field view of the scene. An occurrence of an event is signaled when the tracked object of interest is continually present in the detection zone during a period beginning when the tracked object of interest enters the detection zone and ending when the tracked object of interest leaves the detection zone through the opposite side, after having completely crossed through the detection zone. Use of a virtual beam detection zone reduces false alarms as compared to the numbers of incidences of false alarms of traditional detection methods, while adding several features and benefits.

主权项

1. A method of monitoring whether an object of interest is passing through an area within a field of view of a scene observed by a video camera, the method comprising:
receiving video data representing the field of view of the scene observed by the video camera; using video analytics to track the object of interest represented in the video data; configuring a detection zone within the area, the detection zone including an entrance side and an exit side positioned opposite to each other and thereby defining opposite sides of the detection zone and corresponding to a volume of space defined by a three-dimensional virtual beam superimposed on an image represented by the video data; and signaling an occurrence of an event when the tracked object of interest is continually present in the detection zone during a period beginning when the tracked object of interest enters the detection zone on the entrance side and ending when the tracked object of interest leaves the detection zone from the exit side.