公开(公告)号：US10699380B2

公开(公告)日：2020-06-30

申请号：US16078587

申请日：2017-03-03

Applicant: SYSTEM S.P.A.

Inventor： Simone Giardino ,  Federico Cavallini ,  Franco Stefani ,  Matteo Rubbiani ,  Giuliano Pistoni

IPC: G06T3/60 ,  G06F3/12

Abstract: A method for rotating a digital image in order to print a corresponding rotated print image. The method includes i) providing the digital image to be printed on the printing substrate; ii) receiving positioning coordinates of the substrate relative to a first predefined reference; and iii) rotating the image relative to its centre as a function of the positioning coordinates, thus determining a rotated image. According to one aspect, the rotation is performed by means of a technique of mapping between pixels of the rotated image and pixels of the digital image, and calculating a matrix of correspondences between the pixels of the rotated image and the pixels of the digital image. According to another aspect, the matrix is configured to indicate how many pixels of the rotated image correspond to pixels of the digital image.

公开(公告)号：US10529090B2

公开(公告)日：2020-01-07

申请号：US16078519

申请日：2017-03-03

Applicant: SYSTEM S.P.A.

Inventor： Simone Giardino ,  Federico Cavallini ,  Franco Stefani ,  Matteo Rubbiani ,  Giuliano Pistoni

IPC: G06T7/73 ,  G06T7/00 ,  G06F3/12 ,  G06T7/70

Abstract: A method for locating a printing substrate moving on a conveyor surface. The method includes i) providing the printing substrate moving on a conveyor surface at a selectable speed and in a feed direction, ii) providing an illumination means configured to emit a light beam incident on the conveyor surface according to a predetermined angle, iii) acquiring a predetermined plurality of lines of the substrate, as a function of a line frequency defined as a function of an acquisition rate, iv) generating a primary image as a function of the predetermined plurality of lines, v) detecting, from the primary image, points representative of the substrate, and vi) calculating location coordinates of the substrate relative to the first predefined reference as a function of the plurality of representative points.