US 12,236,638 B2
Object tracking and detection in augmented reality applications
Volodya Grancharov, Solna (SE); Harald Pobloth, Täby (SE); and Sigurdur Sverrisson, Kungsängen (SE)
Assigned to TELEFONAKTIEBOLAGET LM ERICSSON (PUBL), Stockholm (SE)
Appl. No. 17/050,497
Filed by Telefonaktiebolaget LM Ericsson (publ), Stockholm (SE)
PCT Filed Apr. 26, 2018, PCT No. PCT/EP2018/060727
§ 371(c)(1), (2) Date Oct. 26, 2020,
PCT Pub. No. WO2019/206413, PCT Pub. Date Oct. 31, 2019.
Prior Publication US 2021/0118175 A1, Apr. 22, 2021
Int. Cl. G06T 7/73 (2017.01); G06T 7/20 (2017.01); G06T 11/20 (2006.01); G06T 19/00 (2011.01)
CPC G06T 7/75 (2017.01) [G06T 7/20 (2013.01); G06T 11/20 (2013.01); G06T 19/006 (2013.01); G06T 2207/10016 (2013.01); G06T 2210/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An object tracking device for augmented reality configured to determine a location of an object in a current frame of a video stream based on object feature representations extracted from different locations of a bounding box in the current frame and object feature representations belonging to a model of the object, wherein the model comprises at least one object feature representation extracted from at least one previous frame of the video stream and at least one object feature representation from a feature set comprising at least one server-generated object feature representation of objects belonging to a same object class as the object and that were not extracted from at least one previous frame of the video stream;
wherein the object tracking device further comprises a processor; and
a memory comprising instructions executable by the processor, wherein the processor is operative to determine the location of the object in the current frame of the video stream based on object feature representations extracted from different locations in the current frame and object feature representations belonging to the model of the object.