MX9703421A - Difusion de error aumentada del borde del nivel de definicion de impresion. - Google Patents

Difusion de error aumentada del borde del nivel de definicion de impresion.

Info

Publication number
MX9703421A
MX9703421A MX9703421A MX9703421A MX9703421A MX 9703421 A MX9703421 A MX 9703421A MX 9703421 A MX9703421 A MX 9703421A MX 9703421 A MX9703421 A MX 9703421A MX 9703421 A MX9703421 A MX 9703421A
Authority
MX
Mexico
Prior art keywords
output
optical density
input
phantom
level
Prior art date
Application number
MX9703421A
Other languages
English (en)
Inventor
David A Mantell
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of MX9703421A publication Critical patent/MX9703421A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
    • H04N1/4052—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions
    • H04N1/4053—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions with threshold modulated relative to input image data or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

Un método y aparato para convertir una imagen de entrada incluyendo una pluralidad de pixeles de entrada, cada uno tiene un numero de posibles niveles de entrada de densidad optica a una imagen que incluye una pluralidad de pixeles de salida, cada uno tiene un numero de niveles de salida posibles de densidad optica, utilizando niveles de salida de definicion de impresion en una técnica de difusion de error, una técnica de aumento de imagen automática, u otros métodos de impresion y aparatos en donde los errores son retroalimentados para alterar la imagen de entrada. El método incluye generar un valor de densidad optica modificado adicionando un calor de error, si lo hay, al nivel de entrada de uno de los pixeles de entrada, generando un nivel de salida de definicion de impresion como una funcion del nivel de densidad optica modificado, determinar el valor de error como una funcion del nivel de salida de definicion de impresion seleccionado y generar un pixel de salida que tiene uno de los niveles de salida determinados como una funcion del valor de densidad optica modificado.
MX9703421A 1996-06-27 1997-05-09 Difusion de error aumentada del borde del nivel de definicion de impresion. MX9703421A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/672,192 US5835238A (en) 1996-06-27 1996-06-27 Phantom level edge enhanced error diffusion

Publications (1)

Publication Number Publication Date
MX9703421A true MX9703421A (es) 1997-12-31

Family

ID=24697528

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9703421A MX9703421A (es) 1996-06-27 1997-05-09 Difusion de error aumentada del borde del nivel de definicion de impresion.

Country Status (6)

Country Link
US (1) US5835238A (es)
EP (1) EP0817466B1 (es)
JP (1) JP3992789B2 (es)
BR (1) BR9703696A (es)
DE (1) DE69731258T2 (es)
MX (1) MX9703421A (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6160921A (en) * 1998-06-15 2000-12-12 Apple Computer, Inc. Error diffusion with homogeneous distribution in highlight and shadow regions
US6753978B1 (en) 1999-09-22 2004-06-22 Sharp Laboratories Of America, Inc. Higher order error diffusion of digital halftoning
US6608700B1 (en) 1999-11-24 2003-08-19 Xerox Corporation Removal of error diffusion artifacts with alternating distribution weights
US6707576B1 (en) 1999-12-02 2004-03-16 Sharp Laboratories Of America, Inc. Noise modulation error diffusion of digital halftoning
US7102784B1 (en) 1999-12-06 2006-09-05 Xerox Corporation Method of selective edge softening and rendering for the suppression of halo
US6900907B2 (en) 2000-12-08 2005-05-31 Xerox Corporation Overlapping drop assignment for multi-level ink jet printing
JP2002209105A (ja) * 2001-01-09 2002-07-26 Minolta Co Ltd 画像処理装置および方法ならびに画像処理プログラムを記録した記録媒体
JP4116265B2 (ja) * 2001-05-16 2008-07-09 東芝テック株式会社 画像処理方法及び画像処理装置
US7002627B1 (en) 2002-06-19 2006-02-21 Neomagic Corp. Single-step conversion from RGB Bayer pattern to YUV 4:2:0 format
KR100870015B1 (ko) * 2002-08-13 2008-11-21 삼성전자주식회사 디지털 화상 데이터의 윤곽 강조 장치 및 그 방법, 이를이용한 디지털 표시 장치
US20040218220A1 (en) * 2003-04-29 2004-11-04 International Business Machines Corporation Enhanced error diffusion
US7295347B2 (en) * 2003-12-19 2007-11-13 Xerox Corporation Image processing method for generating multi-level data
US7315398B2 (en) * 2003-12-19 2008-01-01 Xerox Corporation Multi-level error diffusion with color image data
US6977663B2 (en) * 2004-03-29 2005-12-20 Sharp Laboratories Of America, Inc. Color error diffusion with color bleed control
EP1798951B1 (en) * 2005-12-14 2015-04-08 Océ-Technologies B.V. Method, apparatus and computer program for halftoning digital images
US8761532B2 (en) * 2007-02-20 2014-06-24 Xerox Corporation Method and system for the selective application of automatic image enhancement to digital images
KR20140101572A (ko) * 2013-02-12 2014-08-20 삼성전자주식회사 전자 장치에서 서비스 품질 정보를 제공하기 위한 장치 및 방법

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5045952A (en) * 1989-08-21 1991-09-03 Xerox Corporation Method for edge enhanced error diffusion
US5226096A (en) * 1991-10-11 1993-07-06 Xerox Corporation Digital halftoning with selectively applied dot-to-dot error diffusion
US5268774A (en) * 1991-11-27 1993-12-07 Xerox Corporation Halftoning with enhanced dynamic range and edge enhanced error diffusion
US5243443A (en) * 1991-12-06 1993-09-07 Xerox Corporation Halftoning with error feedback and image dependent enhancement
JPH05344340A (ja) * 1992-04-09 1993-12-24 Matsushita Electric Ind Co Ltd 階調変換処理方法および装置
KR960005016B1 (ko) * 1992-11-26 1996-04-18 삼성전자주식회사 칼라 프린터에 있어서 적응칼라 에러 확산방법 및 회로
US5321525A (en) * 1992-12-14 1994-06-14 Xerox Corporation Clustered halftoning with dot-to-dot error diffusion
US5434672A (en) * 1993-06-23 1995-07-18 Hewlett-Packard Company Pixel error diffusion method
US5353127A (en) * 1993-12-15 1994-10-04 Xerox Corporation Method for quantization gray level pixel data with extended distribution set

Also Published As

Publication number Publication date
JPH1084478A (ja) 1998-03-31
EP0817466B1 (en) 2004-10-20
US5835238A (en) 1998-11-10
DE69731258T2 (de) 2005-03-03
JP3992789B2 (ja) 2007-10-17
BR9703696A (pt) 1998-11-03
DE69731258D1 (de) 2004-11-25
EP0817466A2 (en) 1998-01-07
EP0817466A3 (en) 2003-07-23

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