公开(公告)号：DE69611573D1

公开(公告)日：2001-02-22

申请号：DE69611573

申请日：1996-05-23

Applicant: XEROX CORP

Inventor： LOCE ROBERT P ,  JODOIN RONALD E ,  LIN YING-WEI

IPC: H04N1/387 ,  G06T3/40 ,  G06T5/00 ,  H04N1/393 ,  H04N1/40

Abstract: The present invention is a method and apparatus for converting the resolution of an input image to a higher resolution that is a noninteger multiple of the input resolution. The invention employs either an interlocked or noninterlocked clustering arrangement of output pixels in order to assign to each output pixel a reference value determined from the signal levels of the input image. In addition, the invention includes a template-based enhancement filter to further refine modify or alter the assigned signal level prior to its output as a higher resolution image

公开(公告)号：DE69630078T2

公开(公告)日：2004-07-08

申请号：DE69630078

申请日：1996-05-31

Applicant: XEROX CORP

Inventor： COSTANZA DANIEL W ,  JODOIN RONALD E ,  LOCE ROBERT P

IPC: B41J2/44 ,  G02B26/12 ,  H04N1/23 ,  G02B26/10 ,  G02B27/00 ,  G06K15/12

Abstract: The present invention is a method and apparatus for compensating for position error inherent in a raster output scanning printing system by adjusting (64) the intensity of image exposure to effect a correction in the output image. The invention is particularly well suited to compensate for position errors arising from a plurality of sources by first summing (62) the errors and then applying a single compensating adjustment to the intensity of individual scan rasters based upon the position error thereof.

公开(公告)号：DE69630078D1

公开(公告)日：2003-10-30

申请号：DE69630078

申请日：1996-05-31

Applicant: XEROX CORP

Inventor： COSTANZA DANIEL W ,  JODOIN RONALD E ,  LOCE ROBERT P

IPC: B41J2/44 ,  G02B26/12 ,  H04N1/23 ,  G02B26/10 ,  G02B27/00 ,  G06K15/12

Abstract: The present invention is a method and apparatus for compensating for position error inherent in a raster output scanning printing system by adjusting (64) the intensity of image exposure to effect a correction in the output image. The invention is particularly well suited to compensate for position errors arising from a plurality of sources by first summing (62) the errors and then applying a single compensating adjustment to the intensity of individual scan rasters based upon the position error thereof.

公开(公告)号：DE69611573T2

公开(公告)日：2001-06-21

申请号：DE69611573

申请日：1996-05-23

Applicant: XEROX CORP

Inventor： LOCE ROBERT P ,  JODOIN RONALD E ,  LIN YING-WEI

IPC: H04N1/387 ,  G06T3/40 ,  G06T5/00 ,  H04N1/393 ,  H04N1/40

Abstract: The present invention is a method and apparatus for converting the resolution of an input image to a higher resolution that is a noninteger multiple of the input resolution. The invention employs either an interlocked or noninterlocked clustering arrangement of output pixels in order to assign to each output pixel a reference value determined from the signal levels of the input image. In addition, the invention includes a template-based enhancement filter to further refine modify or alter the assigned signal level prior to its output as a higher resolution image

公开(公告)号：DE69518577D1

公开(公告)日：2000-10-05

申请号：DE69518577

申请日：1995-05-05

Applicant: XEROX CORP

Inventor： JODOIN RONALD E ,  KLASSEN R VICTOR ,  LOCE ROBERT P ,  LIN YING-WEI

IPC: G06T5/00 ,  H04N1/40 ,  G06K15/00 ,  H04N1/387 ,  H04N1/409

公开(公告)号：DE69518577T2

公开(公告)日：2001-04-26

申请号：DE69518577

申请日：1995-05-05

Applicant: XEROX CORP

Inventor： JODOIN RONALD E ,  KLASSEN R VICTOR ,  LOCE ROBERT P ,  LIN YING-WEI

IPC: G06T5/00 ,  H04N1/40 ,  G06K15/00 ,  H04N1/387 ,  H04N1/409

公开(公告)号：DE69511507T2

公开(公告)日：2000-03-09

申请号：DE69511507

申请日：1995-11-16

Applicant: XEROX CORP

Inventor： JODOIN RONALD E ,  ESCHBACH REINER ,  LOCE ROBERT P

IPC: G06T5/00 ,  H04N1/40

Abstract: The present invention is a method and apparatus for automatic image segmentation using template matching filters (30,40). The invention generally segments differing binary textures or structures (i.e. text 24; images 26) within an input image (10) by passing one or more structures while removing other structures. More particularly, a first set of templates (136a-f; Fig.3) in a first LUT (32) are used for a first iteration in first filter circuit 30; and a second set of templates (138; Fig.3) in a second LUT (42) are used for a second iteration in a second filter circuit (40). XOR circuits (46), (50) are used to produce output images (48), (50) with text-only and image-only, respectively.

公开(公告)号：DE69511507D1

公开(公告)日：1999-09-23

申请号：DE69511507

申请日：1995-11-16

Applicant: XEROX CORP

Inventor： JODOIN RONALD E ,  ESCHBACH REINER ,  LOCE ROBERT P

IPC: G06T5/00 ,  H04N1/40

Abstract: The present invention is a method and apparatus for automatic image segmentation using template matching filters (30,40). The invention generally segments differing binary textures or structures (i.e. text 24; images 26) within an input image (10) by passing one or more structures while removing other structures. More particularly, a first set of templates (136a-f; Fig.3) in a first LUT (32) are used for a first iteration in first filter circuit 30; and a second set of templates (138; Fig.3) in a second LUT (42) are used for a second iteration in a second filter circuit (40). XOR circuits (46), (50) are used to produce output images (48), (50) with text-only and image-only, respectively.

公开(公告)号：JPH11341286A

公开(公告)日：1999-12-10

申请号：JP7842499

申请日：1999-03-23

Applicant: XEROX CORP

Inventor： LOCE ROBERT P ,  JODOIN RONALD E ,  PETER A CLEAN ,  WEI ZHU

IPC: H04N1/409 ,  G06K15/02 ,  G06T5/20 ,  G06T11/00 ,  G06T11/20 ,  H04N1/405 ,  G06K9/20

Abstract: PROBLEM TO BE SOLVED: To provide the allowable quality of an edge by identifying an area where an alias is removed, attaching a tag and performing appropriate rendering corresponding to the area. SOLUTION: Input continuous tone/digital image data are judged as the ones for which the alias is removed in the case that a target pixel is at a fixed reference value by a block, a prescribed tag is supplied to a rendering block, a processing is controlled and it is used as the select signal of a multiplexer. Further, it is combined with another tag for indicating the pixel type of a line and a text, etc., in an operation block, accurate rendering information is generated and supplied to the block and rendering for which the alias is removed is instructed. At the time, the information of the tag, pixel value information and marking process characteristics are used to select rendering signals. The output of the block is supplied to the multiplexer together with the output of a half toning block and one is selectively outputted.