US 12,112,454 B2
Brightness and color correction of image data of a line camera
Romain Müller, Waldkirch (DE); and Marcel Pfeifer, Waldkirch (DE)
Assigned to SICK AG, Waldkirch (DE)
Filed by Sick AG, Waldkirch (DE)
Filed on Mar. 24, 2022, as Appl. No. 17/703,139.
Claims priority of application No. 102021110388.6 (DE), filed on Apr. 23, 2021.
Prior Publication US 2022/0343478 A1, Oct. 27, 2022
Int. Cl. G06T 5/50 (2006.01); H04N 1/60 (2006.01); H04N 23/56 (2023.01); H04N 23/72 (2023.01)
CPC G06T 5/50 (2013.01) [H04N 1/6008 (2013.01); H04N 23/56 (2023.01); H04N 23/72 (2023.01); G06T 2207/10024 (2013.01); G06T 2207/20024 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for brightness and color correction of image data of a line camera, wherein for detecting the image data with at least two line arrays of the line camera under illumination of a detection area of the line camera with an illumination module, a gray-scale image and at least two single-color images are recorded and the image data is corrected with the help of a brightness function of the illumination module which is dependent on a line position of the line array and/or a distance of recorded objects
wherein the brightness function is determined for the illumination module in advance and independent of the line camera and is stored in the illumination module, and the brightness function is read out by the line camera and is used for the respective correction of the gray-scale image and the single-color images.