US 12,346,768 B2
Method of reading an optical code and optoelectronic code reader
Romain Müller, Waldkirch (DE)
Assigned to SICK AG, Waldkirch (DE)
Filed by SICK AG, Waldkirch (DE)
Filed on Feb. 5, 2024, as Appl. No. 18/432,635.
Claims priority of application No. 23155136 (EP), filed on Feb. 6, 2023.
Prior Publication US 2024/0265219 A1, Aug. 8, 2024
Int. Cl. G06K 7/10 (2006.01); G06K 7/14 (2006.01)
CPC G06K 7/1413 (2013.01) 18 Claims
OG exemplary drawing
 
1. A method of reading an optical code in which an image having the code is recorded, comprising:
carrying out a first brightness adaptation of the image;
identifying a region of interest having the optical code located in the image;
subsequent to identifying the optical code in the region of image, performing a second brightness adaptation; and
subsequent to performing the second brightness adaptation, reading the optical code in the region of interest,
wherein the first brightness adaptation is a local brightness adaptation that is carried out in partial regions of the image still while further sections of the image are read; and wherein the localization of the region of interest is based on image information of the image already processed by the first brightness adaptation,
wherein the image having the code is stored as the original image without the first brightness adaptation,
and wherein the code in a region of interest is read with information of the image without the first brightness adaptation.