US 11,722,697 B2
Method and digital video camera for forming a combined image frame of a combined video stream
Viktor Edpalm, Lund (SE); Alexander Toresson, Lund (SE); Johan Palmaeus, Lund (SE); and Jonas Cremon, Lund (SE)
Assigned to Axis AB, Lund (SE)
Filed by Axis AB, Lund (SE)
Filed on Nov. 19, 2021, as Appl. No. 17/530,739.
Claims priority of application No. 20215063 (EP), filed on Dec. 17, 2020.
Prior Publication US 2022/0201330 A1, Jun. 23, 2022
Int. Cl. H04N 19/70 (2014.01); H04N 19/176 (2014.01); H04N 19/597 (2014.01); H04N 19/105 (2014.01); H04N 19/172 (2014.01); H04N 19/88 (2014.01); H04N 5/04 (2006.01)
CPC H04N 19/597 (2014.11) [H04N 5/04 (2013.01); H04N 19/105 (2014.11); H04N 19/172 (2014.11); H04N 19/88 (2014.11)] 13 Claims
OG exemplary drawing
 
9. A method for forming a combined image frame of a combined video stream, the method comprising:
capturing, by a first image sensor of a multi-sensor camera, image frames of a first video stream;
capturing, by a second image sensor of the multi-sensor camera, image frames of a second video stream;
encoding, by a first encoder of the multi-sensor camera, image data of the image frames of the first video stream, wherein each image frame of the first video stream is encoded into first encoded data comprising a plurality of rows wherein each row has a height of a single coding unit and a width equal to a width of the image frame and is encoded as one or more slices;
encoding, by a second encoder of the multi-sensor camera, image data of the image frames of the second video stream, wherein each image frame of the second video stream is encoded into second encoded data comprising a plurality of rows wherein each row has a height of a single coding unit and a width equal to a width of the image frame and is encoded as one or more slices;
combining, by a data combining unit, the first encoded data of an image frame of the first video stream and second encoded data of an image frame of the second video stream into combined encoded data by interleaving rows of the first encoded data of the image frame of the first video stream and rows of the second encoded data of the image frame of the second video stream, the combined encoded data representing the combined image frame of the combined video stream; and
checking if two or more directly subsequent slices in the combined encoded data comprises only skip encoded coding units, and if so replacing the two or more directly subsequent slices comprising only skip encoded coding units with a new slice comprising skip encoded coding units and having a length of the two or more directly subsequent skip comprising only skip encoded coding units.