US 12,229,983 B2
Method and image-processing device for determining a probability value indicating that an object captured in a stream of image frames belongs to an object type
Song Yuan, Lund (SE); and Ludvig Hassbring, Lund (SE)
Assigned to AXIS AB, Lund (SE)
Filed by Axis AB, Lund (SE)
Filed on Sep. 11, 2023, as Appl. No. 18/244,337.
Claims priority of application No. 22197521 (EP), filed on Sep. 23, 2022.
Prior Publication US 2024/0104760 A1, Mar. 28, 2024
Int. Cl. G06K 9/00 (2022.01); G06T 7/12 (2017.01); G06T 7/70 (2017.01); G06V 10/25 (2022.01); G06V 20/52 (2022.01)
CPC G06T 7/70 (2017.01) [G06T 7/12 (2017.01); G06V 10/25 (2022.01); G06V 20/52 (2022.01); G06T 2207/30242 (2013.01); G06V 2201/07 (2022.01)] 13 Claims
OG exemplary drawing
 
1. A method, performed in a multi-camera system, for determining a probability value indicating a probability that an object captured in a stream of image frames belongs to an object type, the method comprising:
detecting a first object or a first part of the first object in a first area of a scene captured in a first stream of image frames captured by a first camera of the multi-camera system;
determining, based on characteristics of the first object or of the first part of the first object, a first probability value indicating a first probability that the detected first object or first part belongs to the object type;
when the first probability value is above a first threshold value, determining that the detected first object or first part belongs to the object type;
detecting a second object or a second part of the second object in a second area of the scene captured in a second stream of image frames by a second camera of the camera system different from the first camera, wherein the second area at least partly overlaps the first area;
determining, based on characteristics of the second object or of the second part of the second object, a second probability value indicating a second probability that the detected second object or the second part belongs to the object type, wherein when the second probability value is above a second threshold value, determining that the detected second object or second part belongs to the object type; and
when the second probability value is below the second threshold value and the first probability value is above the first threshold value determining an updated second probability value by increasing the second probability value, wherein the increasing of the second probability value is based on the first probability value and comprises:
determining a difference between the first probability value and the first threshold value; and
increasing the second probability value based on the difference between the first probability value and the first threshold value.