公开(公告)号：US09292769B1

公开(公告)日：2016-03-22

申请号：US14483388

申请日：2014-09-11

Applicant: HEWLETT-PACKARD INDIGO B.V.

Inventor： Tsafrir Yedid Am ,  Dmitry Iofe ,  Ran Waidman

IPC: G03F3/08 ,  G06K15/02

CPC classification number: G06K15/027 ,  G03G15/5062 ,  G03G2215/0109 ,  G03G2215/0112

Abstract: In an example implementation, a method of iterative calibration includes, in a first iteration, measuring first values of a calibration parameter, and determining first corrections for the measured first values. The method includes, in a next iteration, measuring next values of the calibration parameter that incorporate the first corrections. The first corrections are omitted from the next iteration measurements to provide pseudo iteration measurements, and the first iteration measurements are averaged with the pseudo iteration measurements. Second corrections are then determined based on the averaging.

Abstract translation: 在示例实现中，迭代校准的方法包括在第一迭代中测量校准参数的第一值，以及确定所测量的第一值的第一校正。 该方法包括在下一次迭代中测量结合第一校正的校准参数的下一个值。 从下一次迭代测量中省略第一次校正以提供伪迭代测量，并且通过伪迭代测量对第一次迭代测量进行平均。 然后根据平均值确定第二次校正。

公开(公告)号：US20160078324A1

公开(公告)日：2016-03-17

申请号：US14483388

申请日：2014-09-11

Applicant: HEWLETT-PACKARD INDIGO B.V.

Inventor： Tsafrir Yedid Am ,  Dmitry Iofe ,  Ran Waidman

IPC: G06K15/02

CPC classification number: G06K15/027 ,  G03G15/5062 ,  G03G2215/0109 ,  G03G2215/0112

Abstract: In an example implementation, a method of iterative calibration includes, in a first iteration, measuring first values of a calibration parameter, and determining first corrections for the measured first values. The method includes, in a next iteration, measuring next values of the calibration parameter that incorporate the first corrections. The first corrections are omitted from the next iteration measurements to provide pseudo iteration measurements, and the first iteration measurements are averaged with the pseudo iteration measurements. Second corrections are then determined based on the averaging.

Abstract translation: 在示例实现中，迭代校准的方法包括在第一迭代中测量校准参数的第一值，以及确定所测量的第一值的第一校正。 该方法包括在下一次迭代中测量结合第一校正的校准参数的下一个值。 从下一次迭代测量中省略第一次校正以提供伪迭代测量，并且通过伪迭代测量对第一次迭代测量进行平均。 然后根据平均值确定第二次校正。

公开(公告)号：US20140211227A1

公开(公告)日：2014-07-31

申请号：US13754157

申请日：2013-01-30

Applicant: HEWLETT-PACKARD INDIGO, B.V.

Inventor： Tsafrir Yedid Am ,  Tair Atzmon ,  Dmitry Iofe

IPC: H04N1/00

CPC classification number: H04N1/506 ,  H04N1/6041

Abstract: A method and system for monitoring an image capturing device determines a distortion of an image of a printing medium, wherein the image is captured by means of an image capturing device, such as an in-line camera or scanner, and wherein the image comprises a calibration pattern with a plurality of calibration marks printed on the printing medium. The calibration pattern comprises at least a first sub-set of calibration marks relating to a first separation and a second sub-set of calibration marks relating to a second separation. The distortion is determined by analyzing the first sub-set of calibration marks, and the image is corrected based on said determined distortion. The displacement of the second sub-set of calibration marks with respect to the first sub-set of calibration marks may then be determined. The invention may be employed in a wide range of printers and presses.

Abstract translation: 用于监视图像捕获装置的方法和系统确定打印介质的图像的失真，其中通过诸如在线相机或扫描仪的图像捕获装置捕获图像，并且其中图像包括 具有印刷在打印介质上的多个校准标记的校准图案。 校准图案至少包括与第一分离相关的校准标记的第一子集和与第二分离有关的校准标记的第二子集。 通过分析校准标记的第一子集来确定失真，并且基于所确定的失真校正图像。 然后可以确定校准标记的第二子集相对于第一校准标记子集的位移。 本发明可用于广泛的打印机和印刷机。