公开(公告)号：EP0987873B1

公开(公告)日：2005-04-27

申请号：EP99307023.4

申请日：1999-09-03

Applicant: Hewlett-Packard Company (a Delaware corporation) ,  Agilent Technologies, Inc. (a Delaware corporation)

Inventor： Beausoleil, Raymond G. Jr. ,  Allen, Ross R.

IPC: H04N1/047

CPC classification number: H04N1/047 ,  H04N1/107 ,  H04N2201/02425 ,  H04N2201/03162 ,  H04N2201/04712 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04737 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: A method and apparatus are provided for efficiently obtaining navigational position of a sensor array (22) based on a correlation between images captured by the sensor array at successive points in time. This is achieved by first acquiring a reference frame through said sensor array (22), successively acquiring a sample frame through said sensor array. Correlation data representing a relationship between the sample frame and the reference frame is then generated and a displacement of a reference feature contained in both the reference frame and the sample frame is determined based on the correlation data. The correlation surface of the correlation data is modelled as a general two-dimensional Taylor series expansion. The method and apparatus can be employed in a scanning device (10) to provide efficient scheme for obtaining navigational information based on a comparison of image frames captured by a sensor array of the scanning device at successive points in time.

公开(公告)号：EP0750415B1

公开(公告)日：2003-04-16

申请号：EP96304563.8

申请日：1996-06-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ikeda, Hiroaki, c/o Canon K.K. ,  Niki, Toru, c/o Canon K.K.

IPC: H04N1/047 ,  G06T3/00

CPC classification number: G06K9/3283 ,  G06K2209/01 ,  G06T3/60 ,  H04N1/00681 ,  H04N1/00705 ,  H04N1/00718 ,  H04N1/00769 ,  H04N1/047 ,  H04N1/3878 ,  H04N2201/02425 ,  H04N2201/03162 ,  H04N2201/04703 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04743 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793

Abstract: It is an object of the invention to correct a tilt of an image inputted in a tilted state for a sentence of an original without intervening the operation of the user. For this purpose, projections of two partial images are obtained at check points which were properly decided in the input image information. A tilt angle of an original is obtained from a correlation position of the projections of each partial area. By dividing the image into belt-shaped small areas and shifting in accordance with the tilt angle obtained, an image in which the tilt of the input tilted image was corrected is formed.

公开(公告)号：EP1096780A3

公开(公告)日：2002-05-29

申请号：EP00123120.8

申请日：2000-10-25

Applicant: KONICA CORPORATION

Inventor： Ui, Makoto ,  Haibara, Fumio ,  Yokobori, Jun ,  Niitsuma, Tetsuya ,  Joichi, Norio

IPC: H04N1/23 ,  H04N1/053

CPC classification number: H04N1/2323 ,  B41J11/003 ,  B41J11/008 ,  B41J11/0095 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/2307 ,  H04N1/233 ,  H04N1/2338 ,  H04N1/2369 ,  H04N2201/03162 ,  H04N2201/04712 ,  H04N2201/04732 ,  H04N2201/04737 ,  H04N2201/04786 ,  H04N2201/04787

Abstract: The invention concerns an image forming apparatus provided with an automatic writing-position determining device for forming an image always at a correct position on the recording material. The image forming apparatus includes an image forming section to form an image by writing each of scanning lines, an end position detecting section to detect an end position of a recording material in a direction orthogonal to a conveyance direction of the recording material, and a selecting section to select either an automatic writing-position determining mode or a predetermined writing-position determining mode. When the selecting section selects the automatic writing-position determining mode, the image forming section commences an image writing action from a writing start position determined on the basis of a detected result of the end position detecting device. When the selecting section selects the predetermined writing-position determining mode, the image forming section commences the image writing action from a predetermined writing start position set in advance.

Abstract translation: 本发明涉及一种图像形成装置，其具有自动写入位置确定装置，用于始终在记录材料上的正确位置形成图像。 图像形成装置包括通过写入每条扫描线来形成图像的图像形成部分，结束位置检测部分，以在与记录材料的传送方向正交的方向上检测记录材料的结束位置，以及选择 选择自动写入位置确定模式或预定写入位置确定模式。 当选择部分选择自动写入位置确定模式时，图像形成部分从基于结束位置检测装置的检测结果确定的写入开始位置开始图像写入动作。 当选择部分选择预定的写入位置确定模式时，图像形成部分从预先设置的预定写入开始位置开始图像写入动作。

公开(公告)号：EP0720344B1

公开(公告)日：2000-11-02

申请号：EP95304965.7

申请日：1995-07-17

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Nako, Kazuyuki

IPC: H04N1/10 ,  H04N1/195

CPC classification number: H04N1/1013 ,  H04N1/047 ,  H04N1/193 ,  H04N2201/02425 ,  H04N2201/03162 ,  H04N2201/0434 ,  H04N2201/0436 ,  H04N2201/04703 ,  H04N2201/04729 ,  H04N2201/04734 ,  H04N2201/04737 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: An image reading apparatus for reading a document (2) such as a book from above with the target faces thereof placed up, which allows correction of distortions of the image, without relying on the background color of the target faces of the document (2), wherein image processing means (8) detects the boundary between the document and the document-guiding means (31) (the document edge (21)) on the basis of the image read by image reading means (5) and corrects distortions of the image with reference to the detected boundary (21).

公开(公告)号：EP0716535B1

公开(公告)日：2000-06-21

申请号：EP96100186.4

申请日：1991-11-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Ishizuka, Haruo

IPC: H04N1/03

CPC classification number: H04N1/00976 ,  H04N1/02865 ,  H04N1/0312 ,  H04N1/0315 ,  H04N1/0318 ,  H04N2201/02404 ,  H04N2201/02431 ,  H04N2201/02441 ,  H04N2201/02452 ,  H04N2201/02456 ,  H04N2201/02462 ,  H04N2201/02468 ,  H04N2201/02474 ,  H04N2201/02481 ,  H04N2201/02483 ,  H04N2201/03112 ,  H04N2201/03116 ,  H04N2201/03129 ,  H04N2201/03141 ,  H04N2201/03145 ,  H04N2201/0315 ,  H04N2201/03158 ,  H04N2201/03162 ,  H04N2201/0317 ,  H04N2201/04796

Abstract: An image sensor has a supporting member for integrally supporting a reading system including illuminating means for illuminating an original document, a photoelectrically converting means and imaging means for imaging light reflected by the surface of the original document onto the photoelectrically converting means, and has a member disposed on the side surface of the supporting member. The image sensor has two or more substantially independent spaces formed in the supporting member. The illuminating means, the imaging means and the photoelectrically converting means are accommodated in one of the spaces.

公开(公告)号：EP0986465A1

公开(公告)日：2000-03-22

申请号：EP98934805.7

申请日：1998-05-27

Applicant: Heidelberger DruckmaschinenAktiengesellschaft

Inventor： DÖLVES, Jürgen, Heinrich, Fritz

IPC: B41C1/04 ,  H04N1/047

CPC classification number: H04N1/1911 ,  B41C1/04 ,  H04N1/0473 ,  H04N1/2038 ,  H04N2201/03162 ,  H04N2201/0471 ,  H04N2201/04715 ,  H04N2201/04732 ,  H04N2201/04739 ,  H04N2201/04755 ,  H04N2201/04787 ,  Y10T409/302352 ,  Y10T409/302408 ,  Y10T409/302464 ,  Y10T409/30252

Abstract: The invention relates to a method for engraving printing cylinders used for rotogravure in an electronic engraving machine. According to this said method, at least two engraving sections (A, B) of a given width (SB) are fitted next to each other, in the acial direct ion of the printing cylinder (1). These sections (AB) are engraved with their respective engraving element (3). Before engraving, an axial reference position is pre-set for each engraving element (3). The axial spacing between these reference positions corresponds to the pre-set widths (SB) of the engraving sections (A, B). The engraving elements (3) are placed approximately in their reference positions (RP). The differences in the axial spacing between the reference positions of the engraving elements (3) and the actual positions occupied as a result of the approximate positioning are then measured. During engraving, the engraving elements (3) are moved along the printing cylinder (1), still incorrectly spaced as a result of the approximate positioning. The spacing errors are compensated by displaced engraving of the engraving sections (A, b) on the printing cylinder (1), so that the engraving sections (A, B) have the pre-set widths (SB) despite the incorrect spacing between the graving elements (3).

公开(公告)号：EP0522149B2

公开(公告)日：1999-12-08

申请号：EP92906034.1

申请日：1992-01-29

Applicant: EASTMAN KODAK COMPANY

Inventor： STEPHENSON, Stanley W., c/o Eastman Kodak Company

IPC: B41J2/525

CPC classification number: B41F33/0081 ,  B41J2/525 ,  B41J11/008 ,  B41J35/18 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N1/508 ,  H04N2201/02425 ,  H04N2201/03162 ,  H04N2201/0471 ,  H04N2201/04712 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04737 ,  H04N2201/04749 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: A printing machine includes a print head and a set of sensors adapted to accurately determine the relative position between the print head and a receiver (print media) onto which an image is to be formed. Any dislocation of the receiver from a predetermined nominal position is translated by a data conditioner into correction signals. These correction signals are integrated with nominal incoming image data directed to the print head. The print head then prints an image that compensates for positional variation of the receiver so that a resultant image is properly aligned with the receiver.

公开(公告)号：EP0588551B1

公开(公告)日：1998-12-02

申请号：EP93307081.5

申请日：1993-09-08

Applicant: XEROX CORPORATION

Inventor： Curry, Douglas N.

IPC: H04N1/04

CPC classification number: H04N1/0473 ,  G06K15/1271 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1912 ,  H04N2201/03162 ,  H04N2201/04748 ,  H04N2201/04781 ,  H04N2201/04787

Abstract: An apparatus and method are disclosed for providing accurate layer registration for multiple layer electronic printing systems, typically multi-beam laser raster output scanners, in which accurate layer registration is critical. The method comprises determination of a time delay between page sync signal and start-of-scan signal, using this delay to determine a delay dependent offset factor called the phase registration parameter, and correctively mapping image data to proper output channels based on the phase registration parameter and the laser number. The phase registration parameter must be determined at the beginning of each scan layer and the offset factors must be re-adjusted based on the new phase delay.

公开(公告)号：EP0873003A1

公开(公告)日：1998-10-21

申请号：EP97302519.0

申请日：1997-04-14

Applicant: Hewlett-Packard Company

Inventor： Kahn, Richard ,  Pollard, Stephen Bernard

IPC: H04N1/047

CPC classification number: H04N1/047 ,  H04N1/107 ,  H04N2201/02425 ,  H04N2201/02439 ,  H04N2201/03162 ,  H04N2201/0414 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04737 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04794

Abstract: The present invention relates to a method of reconstructing an image from data captured by a sensor, and is particularly applicable to the case of sequential capture in relative movement between a scanning device and the original image. The scanning device comprises navigation means for detecting the position of the sensor relative to the original image. A pixel grid for the reconstructed image is determined, and correspondence between the pixel grid and the sensor data is identified using sensor position detection data. The intensity of pixels is determined from sensor data selected as relevant to the pixel under consideration.

Abstract translation: 本发明涉及一种从传感器捕获的数据中重构图像的方法，特别适用于在扫描装置与原始图像之间的相对运动中顺序捕获的情况。 扫描装置包括用于检测传感器相对于原始图像的位置的导航装置。 确定重建图像的像素网格，并使用传感器位置检测数据来识别像素网格和传感器数据之间的对应关系。 从与所考虑的像素相关的传感器数据确定像素的强度。

公开(公告)号：EP0869659A2

公开(公告)日：1998-10-07

申请号：EP98105835.7

申请日：1998-03-31

Applicant: KONICA CORPORATION

Inventor： Washio, Koji ,  Ichihara, Yoshiyuki

IPC: H04N1/047

CPC classification number: H04N1/00721 ,  H04N1/00681 ,  H04N1/00734 ,  H04N1/00745 ,  H04N1/00748 ,  H04N1/00753 ,  H04N1/00758 ,  H04N1/00766 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N2201/02425 ,  H04N2201/03162 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04737 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: A correction method of a document inclination angle includes the steps of: first detecting an edge of a document; second detecting an inclination amount of the document corresponding to an inclination angle according to a detected result of the edge of the document. The inclination angle represents an inclination angle of the edge of the document with respect to a first reference direction and a second reference direction perpendicular to the first reference direction. The correction method further includes correcting the inclination angle of image data of the document with respect to the first and second reference directions. The step of the correcting includes a shift processing conducting a first shift processing in which the image data are shifted to one of the first and second reference directions according to the inclination amount and conducting a second shift processing in which the image data are shifted to the other of the first and second reference directions according to the inclination amount.

Abstract translation: 文件倾斜角的校正方法包括以下步骤：首先检测文档的边缘; 根据文件边缘的检测结果，二次检测与倾斜角对应的原稿的倾斜量。 倾斜角度表示文件的边缘相对于第一参考方向和垂直于第一参考方向的第二参考方向的倾斜角度。 校正方法还包括相对于第一和第二参考方向校正文档的图像数据的倾斜角度。 校正步骤包括执行第一移位处理的移位处理，其中图像数据根据倾斜量移位到第一和第二参考方向中的一个，并进行第二移位处理，其中图像数据被移位到 根据倾斜量的第一和第二参考方向中的另一个。