公开(公告)号：US20190135572A1

公开(公告)日：2019-05-09

申请号：US16099745

申请日：2017-05-09

Applicant: BOBST MEX SA

Inventor： Lorenzo PICCARDI ,  Mauro TRUSCELLO ,  Pablo ANTOLINEZ

IPC: B65H43/04 ,  B41F33/00 ,  B41F33/02 ,  G01N21/93

Abstract: A quality control station (2) for a sheet element processing machine, the station having at least one camera (6) arranged for capturing images of sheet elements (4) transported through the quality control station (2), and further having a camera calibration system (10). The camera calibration system (10) having a target holder (12) for holding an optical target (14), and a drive (15) for the target holder (12). The drive (15) is adapted for displacing the target holder (12) between a rest position, in which it is outside of the viewing area (7) of the camera (6), and a calibration position in which it is arranged in the viewing area (7) of the camera (6).

公开(公告)号：US20220182556A1

公开(公告)日：2022-06-09

申请号：US17593327

申请日：2020-03-18

Applicant: BOBST MEX SA

Inventor： Francis PILLOUD ,  Pablo ANTOLINEZ ,  Olivier PORRET

IPC: H04N5/247 ,  H04N5/232 ,  H01S3/00

Abstract: This invention is about an imaging system that uses conventional cameras and a single laser line to perform quality control at the output of a converting machine or a press. The system uses several cameras distributed over the width of the printed sheets. Thanks to the laser line, it can reconstruct the complete image of the printed matter even when the sheets are not perfectly flat or at varying height, compensating geometric as well as photometric distortions. The use of conventional cameras results in a cost effective system.