US 12,412,056 B2
Decoding of two-dimensional barcodes under unfavorable conditions
Ivan Zagaynov, Dolgoprudniy (RU); Dmitry Zvonarev, Sarapul (RU); and Aleksandr Riashchikov, Samara (RU)
Assigned to ABBYY Development Inc., Dover, DE (US)
Filed by ABBYY Development Inc., Dover, DE (US)
Filed on Apr. 15, 2024, as Appl. No. 18/635,802.
Application 18/635,802 is a continuation of application No. 17/745,026, filed on May 16, 2022, granted, now 11,960,966.
Prior Publication US 2024/0256809 A1, Aug. 1, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 7/14 (2006.01); G06K 19/06 (2006.01); G06T 7/60 (2017.01)
CPC G06K 7/1417 (2013.01) [G06K 19/06028 (2013.01); G06T 7/60 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
estimating a module size of a barcode image (BI);
rescaling the BI based on the estimated module size;
processing the rescaled BI to obtain candidate locations of modules in the BI and a representation of pixel intensities of the BI;
identifying associations of grid positions in a grid of modules (GoM) with the candidate locations of modules in the BI, wherein an association of each of at least a subset of the grid positions in the GoM is identified based on one or more associations identified for other grid positions in the GoM; and
decoding the BI, using the GoM and the representation of pixel intensities.