US 11,694,346 B2 · Object tracking in real-time applications

Abstract

An object tracking, in particular adapted for real-time augmented reality applications, involves determining a location of an object (20) in a current frame (10) of a video stream (15), at a point in time following output of a preceding frame (11) of the video stream (15) but preceding output of the current frame (10), by starting from a location of the object (20) determined by an object-detection server (5) for a previous frame (12) of the video stream (15) and recursively track the location of the object (20) in frames (11) of the video stream (15) following the previous frame (12) up to the current frame (10) and recursively update a model of the object (20). Accurate objection detection from an object-detection server (5) can thereby be used even if the object was detected in a past frame (12) of the video stream (15) that has already been visualized.

Claims19

Dependent claims

An object tracking device configured to determine a location of an object in a current frame of a video stream, at a point in time following output of a preceding frame of the video stream but preceding output of the current frame, the object tracking device comprising:

a processor;
and
a memory comprising instructions executable by the processor, whereby the object tracking device is operable to perform the following operations based on a location of the object determined by an object-detection server for a previous frame of the video stream:
recursively track the location of the object in frames of the video stream following the previous frame up to the current frame;
and
recursively update a model of the object for the frames of the video stream up to a model of the object associated with the current frame,
wherein each model update associated with a particular frame of the video stream comprises at least one object feature representation extracted from at least one frame preceding the particular frame.

4 more elements

A method for an object tracking device, the method comprising:

determining a location of an object in a current frame of a video stream, at a point in time following output of a preceding frame of the video stream but preceding output of the current frame, by performing the following operations based on a location of the object determined by an object-detection server for a previous frame of the video stream:
recursively tracking the location of the object in frames of the video stream following the previous frame up to the current frame;
and
recursively updating a model of the object for the frames of the video stream up to a model of the object associated with the current frame,
wherein each model update associated with a particular frame of the video stream comprises at least one object feature representation extracted from at least one frame preceding the particular frame.

2 more elements

Dependencies are inferred from the claim text.

Object tracking in real-time applications

Life of this patent

Object tracking in real-time applications

Life of this patent

Abstract

Claims19