US 12,262,069 B2
System and method for producing a video stream
Andreas Björkman, Täby (SE); Anders Nilsson, Falköping (SE); Lars Erlman, Leksand (SE); Per Blankens, Enebyberg (SE); Maxx Sörqvist, Bålsta (SE); and Marcus Ragnarsson, Gothenburg (SE)
Assigned to LiveArena Technologies AB, Stockholm (SE)
Filed by LIVEARENA TECHNOLOGIES AB, Stockholm (SE)
Filed on Feb. 7, 2024, as Appl. No. 18/434,868.
Application 18/434,868 is a continuation of application No. PCT/SE2023/050090, filed on Feb. 3, 2023.
Claims priority of application No. 2250113-4 (SE), filed on Feb. 4, 2022.
Prior Publication US 2024/0179357 A1, May 30, 2024
Int. Cl. H04N 21/234 (2011.01); G06F 3/01 (2006.01); G06T 3/40 (2006.01); H04N 7/14 (2006.01); H04N 7/15 (2006.01); H04N 21/43 (2011.01); H04N 21/442 (2011.01)
CPC H04N 21/23424 (2013.01) [G06F 3/013 (2013.01); G06F 3/017 (2013.01); G06T 3/40 (2013.01); H04N 7/147 (2013.01); H04N 7/152 (2013.01); H04N 21/4307 (2013.01); H04N 21/44218 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for providing a shared digital video stream, the method comprising:
in a collecting step, collecting from a first digital video source a first digital video stream and from a second digital video source a second digital video stream;
in a first production step, producing the shared digital video stream as an output digital video stream based on consecutively considered frames of the first digital video stream so that image information from the first digital video source is visible in the shared digital video stream, but so that image information from the second digital video source is not visible in the shared digital video stream;
in a trigger detection step, automatically detecting a trigger by performing at least one of:
a) digitally analyzing the first digital video stream to automatically detect the trigger in the form of a participant depicted in the first digital video stream gazing towards, or making a predetermined gesture in relation to, an object depicted in the second digital video stream, the detection being based on information about a relative orientation of the first camera, the participant and the object, the detection further being based on a digital image-based determination of at least one of a body direction, a head direction, a gaze direction and a gesture direction of the participant in question; and
b) digitally analyzing the first and/or second digital video stream to automatically detect the trigger in the form of a transition of a gaze direction of the participant depicted in the second digital video stream from not gazing into the second camera to gazing into the second camera,
the trigger being instructive, according to a predetermined production rule, to alter the production mode of the shared digital video stream;
in a second production step, initiated in response to the detection of the trigger, producing the shared digital video stream as an output digital video stream based on consecutively considered frames of the second digital video stream so that image information from the second digital video source is visible in the shared digital video stream, and/or producing the shared digital video stream as an output digital video stream based on consecutively considered frames of the first digital video source but with at least one of a different cropping, a different zooming, a different panning or a different focus plane selection of the first digital video stream as compared to the first production step; and
in a publishing step, continuously providing the output digital video stream to two or more consumers of the shared digital video stream.