公开(公告)号：WO2017008854A1

公开(公告)日：2017-01-19

申请号：PCT/EP2015/066213

申请日：2015-07-15

Applicant: HEWLETT-PACKARD INDIGO B.V.

Inventor： SPIVAKOVSKY, Alexander ,  PERRY, Oded ,  HAIK, Oren ,  MALKI, Avi

IPC: H04N1/00 ,  H04N1/40

CPC classification number: H04N1/00037 ,  G06K9/036 ,  G06K9/3233 ,  G06K9/6202 ,  H04N1/00015 ,  H04N1/00034 ,  H04N1/4097

Abstract: Apparatus to detect a defect in a printed image and methods of detecting detects in a printed image are described. In some examples, a printing operation is initiated using image data to generate a printed image. The printed image is then scanned to generate a scanned image. A resolution of the scanned image is estimated, calculated or determined on the basis of a characteristic of the printing operation, and a reference image, having a resolution corresponding to the estimated, calculated or determined resolution, is generated from the image data. Whether defects are present in the printed image may be determined on the basis of a comparison of the reference image with the scanned image.

Abstract translation: 描述了用于检测打印图像中的缺陷的装置和检测检测方法的打印图像。 在一些示例中，使用图像数据开始打印操作以生成打印图像。 然后扫描打印的图像以产生扫描图像。 基于打印操作的特性估计，计算或确定扫描图像的分辨率，并且从图像数据生成具有与估计的计算或确定的分辨率对应的分辨率的参考图像。 可以基于参考图像与扫描图像的比较来确定印刷图像中是否存在缺陷。

公开(公告)号：WO2017020917A1

公开(公告)日：2017-02-09

申请号：PCT/EP2015/001582

申请日：2015-07-31

Applicant: HEWLETT-PACKARD INDIGO B.V.

Inventor： ITAN, Liron ,  HAIK, Oren ,  MALKI, Avi

IPC: G06K9/32 ,  G06K9/40 ,  G06K9/46 ,  G06T7/00 ,  H04N1/00

CPC classification number: G06T7/0004 ,  G06K9/3275 ,  G06K9/40 ,  G06K9/4647 ,  G06T7/70 ,  G06T2207/20024 ,  G06T2207/20068 ,  G06T2207/30144 ,  G06T2207/30204 ,  H04N1/38 ,  H04N1/3878 ,  H04N1/409

Abstract: Streaks in images are detected by determining a rotation angle of an image and calculating a rotated image based on a rotation of the image by the rotation angle. A cross-sectional pixel profile of the rotated image is determined and a peak in the cross- sectional pixel profile of the rotated image is determined. A streak in the image is identified based on the determined peak.

Abstract translation: 通过确定图像的旋转角度并基于图像的旋转旋转角度来计算旋转的图像来检测图像中的条纹。 确定旋转图像的横截面像素轮廓，并确定旋转图像的横截面像素轮廓中的峰值。 根据确定的峰值确定图像中的条纹。

公开(公告)号：WO2011090475A1

公开(公告)日：2011-07-28

申请号：PCT/US2010/021606

申请日：2010-01-21

Applicant: HEWLETT PACKARD INDIGO B.V. ,  VANS, Marie ,  AMIR, Gidi ,  JODRA, Rodolfo ,  BARKOL, Omer ,  DAGAN, Ram ,  MALKI, Avi ,  STAELIN, Carl ,  SCHEIN, Sagi ,  FISCHER, Mani ,  SHAKED, Doron ,  SIMSKE, Steven J.

Inventor： VANS, Marie ,  AMIR, Gidi ,  JODRA, Rodolfo ,  BARKOL, Omer ,  DAGAN, Ram ,  MALKI, Avi ,  STAELIN, Carl ,  SCHEIN, Sagi ,  FISCHER, Mani ,  SHAKED, Doron ,  SIMSKE, Steven J.

IPC: B41F33/00 ,  G01N21/89 ,  G06F3/12

CPC classification number: G06T7/001 ,  B41F33/0036 ,  G06T2207/10024 ,  G06T2207/30144 ,  H04N1/00015 ,  H04N1/00029 ,  H04N1/00047 ,  H04N1/0005 ,  H04N1/40068

Abstract: Automated inspection method for detecting a defect in a printed image, comprising processing a raster image, sending the raster image to a print process, printing a printed image corresponding to the raster image onto a medium, capturing a target image from at least a part of the printed image at a lower resolution than the printed image, at least in a medium moving direction, converting at least a part of the raster image to a reference image, and comparing the reference image to the target image.

Abstract translation: 用于检测打印图像中的缺陷的自动检查方法，包括处理光栅图像，将光栅图像发送到打印处理，将与光栅图像相对应的打印图像打印到介质上，从至少一部分拍摄目标图像 至少在中等移动方向上以比打印图像低的分辨率打印图像，将至少一部分光栅图像转换为参考图像，并将参考图像与目标图像进行比较。