公开(公告)号：EP2531954A1

公开(公告)日：2012-12-12

申请号：EP11740122.4

申请日：2011-01-28

Applicant: Creative Technology Ltd.

Inventor： LIAN, Yam Fei ,  CHONG, Kin Fui ,  YONG, Seah Seang ,  LEUNG, Wei Lit Wilfred ,  TAN, Thuan Hwei

IPC: G06K9/00

CPC classification number: H04N1/19594 ,  H04N1/00347 ,  H04N1/0044 ,  H04N1/00562 ,  H04N1/00827 ,  H04N1/195 ,  H04N1/19584 ,  H04N13/239 ,  H04N13/243 ,  H04N2201/0081 ,  H04N2201/0089 ,  H04N2201/0416 ,  H04N2201/0436 ,  H04N2201/0446 ,  H04N2201/0452

Abstract: A device and method for scanning an object on a working surface, the device comprising: a body located adjacent to the working surface; two or more cameras mounted on the body at a location elevated adjacently above the working surface for capturing images of the object on the working surface, the two or more cameras being angled such that their range of image captures overlap and the common overlapping region of the range of image captures of the two or more cameras corresponds with the size of the working surface, the two or more cameras being spaced apart such that each of the two or more cameras captures a different angle of the common overlapping region; and a processing unit capable of correcting skewed images of the working surface captured by the two or more cameras and capable of converting the images captured by the two or more cameras into a three dimensional image.

公开(公告)号：EP1205790B1

公开(公告)日：2004-09-29

申请号：EP01125489.3

申请日：2001-11-06

Applicant: Xerox Corporation

Inventor： Dance, Christopher R. ,  Seeger, Mauritius

IPC: G03B17/06

CPC classification number: H04N1/19594 ,  G03B17/06 ,  H04N1/195 ,  H04N2201/043 ,  H04N2201/0436 ,  H04N2201/0452 ,  H04N2201/04717 ,  H04N2201/04743 ,  H04N2201/04751

公开(公告)号：EP1073989A1

公开(公告)日：2001-02-07

申请号：EP99948569.1

申请日：1999-04-30

Applicant: C Technologies AB

Inventor： F HRAEUS, Christer

IPC: G06K9/20 ,  H04N1/00 ,  G06T5/50

CPC classification number: H04N1/107 ,  G06K9/228 ,  H04N1/195 ,  H04N1/3873 ,  H04N2201/043 ,  H04N2201/0452

Abstract: A device for recording information by means of imaging with the aid of a light-sensitive sensor with a two-dimensional sensor surface is described. The device is adjustable between a first mode and a second mode. In the first mode, the imaging is effected by means of a plurality of images with partially overlapping contents. Each of the images depicts a small area on an information carrier and the images are put together into a composite image. In the second mode, the imaging is effected by means of at least one image of a larger area of the information carrier. The device has means for indicating the size of the imaging area.

公开(公告)号：EP1067757A1

公开(公告)日：2001-01-10

申请号：EP99305483.2

申请日：1999-07-09

Applicant: Hewlett-Packard Company

Inventor： Pilu, Maurizio

IPC: H04N1/047

CPC classification number: H04N1/387 ,  H04N1/195 ,  H04N2201/0434 ,  H04N2201/0452

Abstract: The present invention relates to a system for de-warping images of an applicable surface, including applicable curled surfaces, and in particular of images of curled documents (30). The system (1) includes a processor (25) linked to an image capture means (2) which: captures an image of the surface (30), said image having a warp corresponding to the non-planar surface; generates from the image a first set of data points representing the three-dimensional profile of the non-planar surface relative (30) to a planar reference surface (12); fits to the first set of data points a second set of data points representative of an applicable mesh; and uses the second set of data points to texture-map the image (12) in order to de-warp the image.

Abstract translation: 本发明涉及一种用于对包括适用卷曲表面在内的可应用表面的图像进行去翘曲的系统，特别涉及卷曲文件（30）的图像。 系统（1）包括连接到图像捕获装置（2）的处理器（25），其捕获表面（30）的图像，所述图像具有对应于非平面表面的翘曲; 从图像生成表示非平面表面相对（30）到平面参考表面（12）的三维轮廓的第一组数据点; 适合于第一组数据点，第二组数据点表示适用的网格; 并且使用第二组数据点对图像（12）进行纹理映射，以便使图像去扭曲。

公开(公告)号：EP1128655B1

公开(公告)日：2006-12-06

申请号：EP00301350.5

申请日：2000-02-21

Applicant: Hewlett-Packard Company A Delaware Corporation

Inventor： Pollard, Stephen Bernard ,  Pilu, Maurizio ,  Goris, Andrew C.

IPC: H04N1/00 ,  H04N1/047

CPC classification number: H04N1/19594 ,  H04N1/107 ,  H04N1/195 ,  H04N2201/0452

公开(公告)号：EP1453297A1

公开(公告)日：2004-09-01

申请号：EP04012976.9

申请日：2001-11-06

Applicant: Xerox Corporation

Inventor： Dance, Christopher R. ,  Seeger, Mauritius

IPC: H04N1/21

CPC classification number: H04N1/19594 ,  G03B17/06 ,  H04N1/195 ,  H04N2201/043 ,  H04N2201/0436 ,  H04N2201/0452 ,  H04N2201/04717 ,  H04N2201/04743 ,  H04N2201/04751

Abstract: A document camera is described for capturing an electronic image of a document, for subsequent optical character recognition. In order to avoid the need for a user to look through a viewfinder of the camera, the camera comprises a projector for projecting an optical field of view indicator on to the document. The user can see the projected indicator on the document page, indicating the effective field of view of the camera. The camera may include auto-focus and zooming mechanisms. In one form, the camera processes a detected image to determine a capture zone corresponding to whole regions of the document falling entirely within the field of view. The projected indicator is controlled to indicate only the capture zone. When the image is to be captured, the camera zooms in to the capture zone to capture the image at maximum resolution.

Abstract translation: 描述了用于捕获文档的电子图像的文档照相机，用于随后的光学字符识别。 为了避免用户需要通过相机的取景器观看，摄像机包括用于将光学视场指示器投影到文档上的投影仪。 用户可以在文档页面上看到投影指示，指示相机的有效视场。 相机可能包括自动对焦和缩放机制。 在一种形式中，相机处理检测到的图像以确定与完全落在视场内的文档的整个区域相对应的捕获区域。 控制投影指示器仅指示捕获区域。 当要拍摄图像时，相机将放大到拍摄区域以最大分辨率拍摄图像。

公开(公告)号：EP1374171A1

公开(公告)日：2004-01-02

申请号：EP02725256.8

申请日：2002-03-21

Applicant: Hewlett-Packard Company

Inventor： SILVERSTEIN, D., Amnon

IPC: G06T5/00

CPC classification number: G06T5/005 ,  G06T5/006 ,  G06T2207/10024 ,  G06T2207/30204 ,  H04N2201/0436 ,  H04N2201/0452

Abstract: A system and method of obtaining a reconstructed digital image of an image that is projected, displayed, or printed on a surface by capturing a single digital image of the surface is described. According to the system and method, at least three illumination marks are projected onto the surface. The illumination marks have a particular detectable characteristic. An image capture device captures a single image of the surface including the illumination marks to obtain captured image data. The location and the pixel values corresponding to the illumination marks are detected dependent on the particular characteristic of the illumination mark pixels in the captured image data. The locations of the illumination marks are then used to correct for distortion of the image and surface in the captured image data to generate an undistorted digital image of the image on the surface. The illumination mark pixel values are replaced within undistorted digital image with estimated pixel values that are determined using neighboring non-illumination mark pixel values.

公开(公告)号：EP1093291A3

公开(公告)日：2002-07-17

申请号：EP00115914.4

申请日：2000-07-25

Applicant: Hewlett-Packard Company, A Delaware Corporation

Inventor： Dow, James C. ,  Sims, David. ,  Berg, Thomas E.

IPC: H04N1/107

CPC classification number: H04N1/107 ,  H04N2201/0452

Abstract: Scanner apparatus (12) having a visual scan-region position feedback system (10) according to the present invention may comprise a body (30) having at least one elongate opening (24) therein that extends along a transverse axis (26) so that the elongate opening (24) encompasses a scan region (28) on an object (14) during a scanning operation. An image sensing system (44) mounted within the body (30) of the scanner (12) is optically coupled to the elongate opening (24) therein and receives image light reflected by the scan region (28). A first light source (66) mounted to the body (30) produces a first light beam (20) that is generally aligned with the elongate opening (24) in the body (30) and that extends outwardly from the body (30) in a first direction (76) along the transverse axis (26). The first light beam (20) is incident on at least a portion of the object (14) being scanned during the scanning operation and provides a visual indication of a position of the scan region (28) with respect to the object (14) being scanned.

公开(公告)号：EP1205790A2

公开(公告)日：2002-05-15

申请号：EP01125489.3

申请日：2001-11-06

Applicant: Xerox Corporation

Inventor： Dance, Christopher R. ,  Seeger, Mauritius

IPC: G03B17/06

CPC classification number: H04N1/19594 ,  G03B17/06 ,  H04N1/195 ,  H04N2201/043 ,  H04N2201/0436 ,  H04N2201/0452 ,  H04N2201/04717 ,  H04N2201/04743 ,  H04N2201/04751

Abstract: A document camera is described for capturing an electronic image of a document, for subsequent optical character recognition. In order to avoid the need for a user to look through a viewfinder of the camera, the camera comprises a projector for projecting an optical field of view indicator on to the document. The user can see the projected indicator on the document page, indicating the effective field of view of the camera. The camera may include auto-focus and zooming mechanisms. In one form, the camera processes a detected image to determine a capture zone corresponding to whole regions of the document falling entirely within the field of view. The projected indicator is controlled to indicate only the capture zone. When the image is to be captured, the camera zooms in to the capture zone to capture the image at maximum resolution.

公开(公告)号：EP1093291A2

公开(公告)日：2001-04-18

申请号：EP00115914.4

申请日：2000-07-25

Applicant: Hewlett-Packard Company, A Delaware Corporation

Inventor： Dow, James C. ,  Sims, David. ,  Berg, Thomas E.

IPC: H04N1/107

CPC classification number: H04N1/107 ,  H04N2201/0452

Abstract: Scanner apparatus (12) having a visual scan-region position feedback system (10) according to the present invention may comprise a body (30) having at least one elongate opening (24) therein that extends along a transverse axis (26) so that the elongate opening (24) encompasses a scan region (28) on an object (14) during a scanning operation. An image sensing system (44) mounted within the body (30) of the scanner (12) is optically coupled to the elongate opening (24) therein and receives image light reflected by the scan region (28). A first light source (66) mounted to the body (30) produces a first light beam (20) that is generally aligned with the elongate opening (24) in the body (30) and that extends outwardly from the body (30) in a first direction (76) along the transverse axis (26). The first light beam (20) is incident on at least a portion of the object (14) being scanned during the scanning operation and provides a visual indication of a position of the scan region (28) with respect to the object (14) being scanned.

Abstract translation: 具有根据本发明的视觉扫描区域位置反馈系统（10）的扫描仪装置（12）可以包括其中具有至少一个细长开口（24）的主体（30），其沿着横向轴线（26）延伸，使得 在扫描操作期间，细长开口（24）包围物体（14）上的扫描区域（28）。 安装在扫描器（12）的主体（30）内的图像感测系统（44）在其中与细长开口（24）光学耦合，并接收由扫描区域（28）反射的图像光。 安装到主体（30）上的第一光源（66）产生与主体（30）中的细长开口（24）大致对准并且从主体（30）向外延伸的第一光束（20） 沿着横向轴线（26）的第一方向（76）。 第一光束（20）入射到扫描操作期间被扫描的物体（14）的至少一部分，并且提供扫描区域（28）相对于物体（14）的位置的视觉指示 扫描。