question to klt tracker behavior

Accelerated Computing Intelligent Video Analytics DeepStream SDK
#1

I wonder if the KLT tracker is reset on each object detection.

Considering the following example situation with a primary gie and a tracker, while the primary gie is applied to every fifth frame.

  1. Object Detector detects Object A and B in frame 1.
  2. In the following 4 frames the tracker tracks object A and B.
  3. In frame 6 the object detector only detects object A, although object B is still present in the frame.

As object A is detected again, the tracker will continue to track it with updated bounding box information, I guess. But how is object B handled? Is it discarded now or will the tracker continue to track it, if there is a high enough confidence?

Thanks in advance.

#2

Hi,

It will be discarded.

PrimaryGIE will reset the bounding box information in the metadata.
And tracker is only applied to the bounding box stored in the current frame.

Thanks.