公开(公告)号：WO2021234509A1

公开(公告)日：2021-11-25

申请号：PCT/IB2021/054037

申请日：2021-05-12

Applicant: LANDA CORPORATION LTD.

Inventor： LEVANT, Boris ,  SILBERSTEIN, Shai ,  YANIR, Tomer ,  GUTTMAN, Avraham ,  SIMAN TOV, Alon

IPC: B41J2/21 ,  B41J2/165 ,  G06N3/08

Abstract: A method includes, receiving a first digital image (FDI) to-be printed by a digital printing system (DPS) (10). In a training phase: for first selected regions (111) in the FDI, a first set of synthetic images (SIs) (112A, 112B, 114A, 114B, 116A, 116B) having a defect caused by a defective part (DP) (99) in the first selected regions, is produced; a neural network (NN) (150) is trained to detect the defect using the first set SIs. In a subsequent detection phase: the NN is applied for identifying, in a second digital image (SDI) (136, 146) acquired from an image produced by the DPS, suspected second regions (135, 145); for each of the second regions, a second set (137, 147) of SIs having DPs that form the defects, is produced; and the DP is identified by comparing, in each of the second regions, between the SDI and the second set SIs.