US 12,001,902 B2
Correcting distortions in digital printing by implanting dummy pixels in a digital image
Alon Siman Tov, Or Yehuda (IL); and Yoav Stein, Kiryat Ono (IL)
Assigned to LANDA CORPORATION LTD., Rehovot (IL)
Appl. No. 17/265,817
Filed by Landa Corporation Ltd., Rehovot (IL)
PCT Filed Aug. 8, 2019, PCT No. PCT/IB2019/056746
§ 371(c)(1), (2) Date Feb. 4, 2021,
PCT Pub. No. WO2020/035766, PCT Pub. Date Feb. 20, 2020.
Claims priority of provisional application 62/717,957, filed on Aug. 13, 2018.
Prior Publication US 2021/0309020 A1, Oct. 7, 2021
Int. Cl. B41J 2/21 (2006.01); G06K 15/02 (2006.01); H04N 1/409 (2006.01); H04N 1/58 (2006.01)
CPC G06K 15/1876 (2013.01) [G06K 15/02 (2013.01); H04N 1/409 (2013.01); H04N 1/58 (2013.01); B41J 2/2135 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for correcting distortion in image printing, the method comprising:
receiving a digital image acquired from a printed image;
estimating, based on the digital image, a geometric distortion having a wave-shaped pattern of features formed in the printed image along both a first axis and a second axis, different from the first axis;
calculating one or more pixel locations that, when multiple dummy pixels are implanted along both the first axis and the second axis, compensate for the wave-shaped pattern of the estimated geometric distortion along both the first and second axes;
correcting the geometric distortion in a subsequent digital image to be printed, by implanting the dummy pixels at the one or more calculated pixel locations along the first and second axes in the subsequent digital image; and
printing the subsequent digital image having the corrected geometric distortion.