BRPI0701259A2 - interrupÇço baseada em mapa de bits - Google Patents

interrupÇço baseada em mapa de bits

Info

Publication number
BRPI0701259A2
BRPI0701259A2 BRPI0701259-4A BRPI0701259A BRPI0701259A2 BR PI0701259 A2 BRPI0701259 A2 BR PI0701259A2 BR PI0701259 A BRPI0701259 A BR PI0701259A BR PI0701259 A2 BRPI0701259 A2 BR PI0701259A2
Authority
BR
Brazil
Prior art keywords
color
pixels
lightest
bitmap
darkest
Prior art date
Application number
BRPI0701259-4A
Other languages
English (en)
Inventor
Meng Yao
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 BRPI0701259A2 publication Critical patent/BRPI0701259A2/pt

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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/58—Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)
  • Color, Gradation (AREA)
  • Image Processing (AREA)

Abstract

INTERRUPÇçO BASEADA EM MAPA DE BITS. A presente invenção refere-se a um método de interrupção baseado em mapa de bits que estende o padrão de pontos de uma cor mais clara para uma cor mais escura. Para os pixéis selecionados com a cor mais escura e não com a cor mais clara, são identificados os pixéis correspondentemente localizados nas células de meio-tom vizinhas. Caso algum destes pixéis localizados de forma correspondente contenha a cor mais clara e não a cor mais escura, o pixel mais claro é adicionado aos pixéis selecionados.
BRPI0701259-4A 2006-04-06 2007-04-04 interrupÇço baseada em mapa de bits BRPI0701259A2 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/399,245 US7684087B2 (en) 2006-04-06 2006-04-06 Bitmapped based trapping

Publications (1)

Publication Number Publication Date
BRPI0701259A2 true BRPI0701259A2 (pt) 2008-11-18

Family

ID=38179829

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0701259-4A BRPI0701259A2 (pt) 2006-04-06 2007-04-04 interrupÇço baseada em mapa de bits

Country Status (6)

Country Link
US (1) US7684087B2 (pt)
EP (1) EP1843572B1 (pt)
JP (1) JP4925899B2 (pt)
BR (1) BRPI0701259A2 (pt)
DE (1) DE602007010201D1 (pt)
MX (1) MX2007003900A (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8289573B2 (en) * 2009-01-12 2012-10-16 Xerox Corporation Method for reducing registration defects in color printing
US8330990B2 (en) * 2009-01-12 2012-12-11 Xerox Corporation Method and system for modifying a multi-bit rasterized digital image to reduce registration artifacts
US8437045B2 (en) * 2009-08-27 2013-05-07 Xerox Corporation Bitmapped based trapping methods, apparatus and system by modifying non-black halftone pixel bitmap plane using estimated continuous tone value
JP2011081192A (ja) * 2009-10-07 2011-04-21 Fuji Xerox Co Ltd 画像形成装置および画素制御プログラム
US8340396B2 (en) * 2010-04-05 2012-12-25 Xerox Corporation Color trapping on a halftoned bi-level bitmap
US9639791B2 (en) * 2013-05-23 2017-05-02 Xerox Corporation Color registration error compensation in color printing
US8995021B2 (en) 2013-06-12 2015-03-31 Xerox Corporation Black trapping methods, apparatus and systems for binary images

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8410860D0 (en) 1984-04-27 1984-06-06 Crosfield Electronics Ltd Image modification
JPH01170169A (ja) 1987-12-25 1989-07-05 Dainippon Screen Mfg Co Ltd 多色印刷のための画像図形修正処理方法
JPH0817445B2 (ja) 1990-11-06 1996-02-21 大日本スクリーン製造株式会社 画像のカブセ処理方法
US5923821A (en) 1996-09-27 1999-07-13 Xerox Corporation Digital image trapping system
JPH10145625A (ja) * 1996-11-15 1998-05-29 Minolta Co Ltd 多色画像形成装置及び多色画像形成方法
JPH10150576A (ja) * 1996-11-18 1998-06-02 Hitachi Ltd デジタル階調処理方法及び装置
US6738159B2 (en) 1999-09-30 2004-05-18 Xerox Corporation Method and apparatus for implementing a trapping operation on a digital image
US6798540B1 (en) * 2000-10-31 2004-09-28 Hewlett-Packard Development Company, L.P. Method and apparatus for underprinting pixels
JP2004282343A (ja) * 2003-03-14 2004-10-07 Toshiba Tec Corp カラー画像処理方法
US7221479B2 (en) * 2003-05-30 2007-05-22 Xerox Corporation Method for avoiding multiple color moirés in color halftoning
US7672013B2 (en) 2003-11-20 2010-03-02 Electroncics For Imaging, Inc. Methods and apparatus for electronically trapping digital images

Also Published As

Publication number Publication date
US20070236740A1 (en) 2007-10-11
EP1843572B1 (en) 2010-11-03
US7684087B2 (en) 2010-03-23
EP1843572A2 (en) 2007-10-10
EP1843572A3 (en) 2007-12-05
DE602007010201D1 (de) 2010-12-16
JP2007282240A (ja) 2007-10-25
JP4925899B2 (ja) 2012-05-09
MX2007003900A (es) 2008-12-01

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Legal Events

Date Code Title Description
B03A Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2384 DE 13-09-2016 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.