US 12,401,769 B2
Camera information handover
Axel Keskikangas, Lund (SE); Song Yuan, Lund (SE); and Viktor Edpalm, Lund (SE)
Assigned to AXIS AB, Lund (SE)
Filed by Axis AB, Lund (SE)
Filed on Sep. 11, 2023, as Appl. No. 18/464,313.
Claims priority of application No. 22199361 (EP), filed on Oct. 3, 2022.
Prior Publication US 2024/0114115 A1, Apr. 4, 2024
Int. Cl. H04N 7/18 (2006.01); H04N 23/66 (2023.01); H04N 23/81 (2023.01); H04N 23/88 (2023.01)
CPC H04N 7/188 (2013.01) [H04N 23/66 (2023.01); H04N 23/81 (2023.01); H04N 23/88 (2023.01)] 17 Claims
OG exemplary drawing
 
1. A method for triggering a second camera to perform one or more actions prior to an object appearing in the field of view of the second camera, wherein the second camera is arranged in a camera system including the second camera and at least a first device, and wherein a location and a field of view is known for the second camera and a location is known for the first device, the method comprising:
receiving, in the second camera, information indicating that the object is approaching the field of view of the second camera, wherein the field of view of the second camera has a plurality of subareas, and wherein the received information is based on information from the first device indicating a location and a direction of movement of the object, and
in response to the received information, determining, in the second camera, at least one subarea of the plurality of subareas of the field of view of the second camera in which the object is estimated to first appear and triggering the second camera to perform at least one of the following actions prior to the object appearing in the field of view of the second camera:
initiating an intra refresh procedure comprising intra encoding of a first portion of at least one image frame corresponding to one or more of the plurality of subareas, other than the at least one subarea, of the field of view of the second camera prior to intra encoding of a second portion of the least one image frame corresponding to the at least one subarea of the field of view of the second camera in which the object is estimated to first appear, or
adjusting one or more image processing parameters only in the second portion of the at least one image frame that corresponds to the at least one subarea of the field of view of the second camera in which the object is estimated to first appear.