US 11,683,575 B2
Space mapping illumination in image system
Malte Bokvist, Lund (SE); and Simon Preutz, Lund (SE)
Assigned to AXIS AB, Lund (SE)
Filed by Axis AB, Lund (SE)
Filed on Nov. 23, 2021, as Appl. No. 17/533,122.
Claims priority of application No. 20213292 (EP), filed on Dec. 11, 2020.
Prior Publication US 2022/0191366 A1, Jun. 16, 2022
Int. Cl. H04N 23/56 (2023.01); H04N 23/74 (2023.01); G03B 15/05 (2021.01)
CPC H04N 23/56 (2023.01) [G03B 15/05 (2013.01); H04N 23/74 (2023.01)] 9 Claims
OG exemplary drawing
 
1. A method for generating an image of a scene by an image system, the method comprising:
obtaining a distance matrix for the scene, wherein each cell of the distance matrix corresponds to a zone of the scene and a value in each cell represents a distance from an object in each zone to a camera;
obtaining an illumination intensity matrix for the scene, wherein each cell of the illumination intensity matrix corresponds to a zone of the scene and a value in each cell represents illumination intensity of one or more illumination devices in each zone of the scene;
generating a compensation matrix based on the illumination intensity matrix and the distance matrix;
characterized by
adjusting the intensity of the one or more illumination devices based on the compensation matrix;
capturing an image of the scene by the camera using the one or more illumination devices with adjusted intensity; and
adjusting pixel values of the captured image based on the compensation matrix to generate the image of the scene.