US 12,148,216 B2
Method and monitoring camera for handling video streams
Björn Ardö, Lund (SE)
Assigned to AXIS AB, Lund (SE)
Filed by Axis AB, Lund (SE)
Filed on Feb. 11, 2022, as Appl. No. 17/669,403.
Claims priority of application No. 21162577 (EP), filed on Mar. 15, 2021.
Prior Publication US 2022/0292833 A1, Sep. 15, 2022
Int. Cl. G06V 20/52 (2022.01); G06V 10/10 (2022.01); G06V 20/40 (2022.01)
CPC G06V 20/52 (2022.01) [G06V 10/16 (2022.01); G06V 20/44 (2022.01); G06V 20/49 (2022.01)] 15 Claims
OG exemplary drawing
 
1. A method performed by a monitoring camera for handling a first video stream and a second video stream, wherein the monitoring camera comprises a first image sensor and a second image sensor, the method comprising:
obtaining the first video stream from the first image sensor and the second video stream from the second image sensor,
wherein a field of view of the first image sensor partly overlaps with a field of view of the second image sensor in an overlap area;
identifying a moving object in the overlap area;
dividing the moving object into a plurality of sub objects;
performing a hard handover of each of the plurality of sub objects from the first video stream to the second video stream based on respective ones of the plurality of sub objects being completely within the overlap area and based on a point of the respective ones of the plurality of sub objects passing a border within the overlap area,
wherein each of the respective ones of the plurality of sub objects is represented by image data from the first video stream before the hard handover, and each of the respective ones of the plurality of sub objects is represented by image data from the second video stream after the hard handover;
blending the image data from the first video stream and image data from the second video stream, other than the image data of the respective ones of the plurality of sub objects from the second video stream, in the overlap area using a blending algorithm;
disabling the blending algorithm for image data representing each of the plurality of sub objects;
determining that at least one of the plurality of sub objects extends outside the overlap area; and
subdividing the at least one of the plurality of sub objects that extends outside the overlap area into further sub objects,
wherein the hard handover is performed on the further sub objects.