DETECTED OBJECT TRACKER FOR A VIDEO ANALYTICS SYSTEM

摘要

Techniques are disclosed which provide a detected object tracker for a video analytics system. As disclosed, the detected object tracker provides a robust foreground object tracking component for a video analytics system which allow other components of the video analytics system to more accurately evaluate the behavior of a given object (as well as to learn to identify different instances or occurrences of the same object) over time. More generally, techniques are disclosed for identifying what pixels of successive video frames depict the same foreground object. Logic implementing certain functions of the detected object tracker can be executed on either a conventional processor (e.g., a CPU) or a hardware acceleration processing device (e.g., a GPU), allowing multiple camera feeds to be evaluated in parallel.

主权项

1. A computer-implemented method for tracking foreground objects depicted in a scene, the method comprising:
launching a tracker component of a video analytics system executed on one or more processing units of the video analytics system; performing, by the tracker component, a geometric matching between a first set of bounded regions associated with a current video frame of the scene and a second set of bounded regions associated with a previous video frame of the scene, wherein the geometric matching assigns one or more of the first set of bounded regions to a known set of foreground objects and one or more of the first set of bounded regions to a discovered set of foreground objects; retrieving, by the tracker component, a third set of bounded regions, each corresponding to a missing foreground objects tracked in one or more previous video frames of the scene; and processing, on one or more processing pipelines of a hardware acceleration device, one or more of the bounded regions in the known set of foreground objects, in the discovered set of foreground objects, and in the missing set of foreground objects to determine a set of tracked foreground objects observed by the video analytics system in the current frame.