US 12,276,614 B2
System and method for imaging reflecting objects
Yonatan Hyatt, Tel-Aviv (IL); and Ran Ginsburg, Ramat Gan (IL)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Appl. No. 17/797,166
Filed by SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
PCT Filed Feb. 7, 2021, PCT No. PCT/IL2021/050143
§ 371(c)(1), (2) Date Aug. 3, 2022,
PCT Pub. No. WO2021/156873, PCT Pub. Date Aug. 12, 2021.
Claims priority of provisional application 63/075,153, filed on Sep. 6, 2020.
Claims priority of provisional application 62/970,833, filed on Feb. 6, 2020.
Claims priority of application No. 272538 (IL), filed on Feb. 6, 2020.
Prior Publication US 2023/0342909 A1, Oct. 26, 2023
Int. Cl. G01N 21/88 (2006.01); G06T 5/50 (2006.01); G06T 7/00 (2017.01); G06V 10/141 (2022.01); G06V 10/145 (2022.01); G06V 10/25 (2022.01); H04N 23/72 (2023.01); H04N 23/73 (2023.01); H04N 23/74 (2023.01); H04N 23/741 (2023.01); H04N 23/56 (2023.01)
CPC G01N 21/8806 (2013.01) [G06T 5/50 (2013.01); G06T 7/001 (2013.01); G06V 10/141 (2022.01); G06V 10/145 (2022.01); G06V 10/25 (2022.01); H04N 23/72 (2023.01); H04N 23/73 (2023.01); H04N 23/74 (2023.01); H04N 23/741 (2023.01); G06T 2207/10144 (2013.01); G06T 2207/10152 (2013.01); G06T 2207/20208 (2013.01); G06T 2207/20212 (2013.01); G06T 2207/30108 (2013.01); H04N 23/56 (2023.01)] 17 Claims
OG exemplary drawing
 
1. A method for an automated visual inspection process of an object on an inspection line, the method comprising:
illuminating the object on the inspection line, with pulses of a first pattern illumination and pulses of a second pattern illumination, the pulses being repeated at a constant frequency, to provide a flicker-free inspection environment for human workers, the pulses of the first and second patterns being temporally offset from each other and partially overlapping in time;
controlling camera exposure events in synchronization with the pulses to capture a plurality of images of the first and second illumination patterns separately and simultaneously; and
utilizing at least one of the plurality of images to perform visual inspection of the object.