BR9917243A - Padrão de semi-tom, conjunto de padrões desemi-tom, método para criar uma máscara desemi-tom, máscara de semi-tom, matriz de limiar desemi-tom, e, método para usar a matriz de limiar desemi-tom - Google Patents

Padrão de semi-tom, conjunto de padrões desemi-tom, método para criar uma máscara desemi-tom, máscara de semi-tom, matriz de limiar desemi-tom, e, método para usar a matriz de limiar desemi-tom

Info

Publication number
BR9917243A
BR9917243A BR9917243-7A BR9917243A BR9917243A BR 9917243 A BR9917243 A BR 9917243A BR 9917243 A BR9917243 A BR 9917243A BR 9917243 A BR9917243 A BR 9917243A
Authority
BR
Brazil
Prior art keywords
halftone
threshold matrix
mask
patterns
semi
Prior art date
Application number
BR9917243-7A
Other languages
English (en)
Inventor
Richard L Rylander
Original Assignee
3M Innovative Properties Co
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 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Publication of BR9917243A publication Critical patent/BR9917243A/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
    • H04N1/52—Circuits or arrangements for halftone screening
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color, Gradation (AREA)
  • Color Image Communication Systems (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

"PADRãO DE SEMI-TOM, CONJUNTO DE PADRõES DESEMI-TOM, MéTODO PARA CRIAR UMA MáSCARA DESEMI-TOM, MáSCARA DE SEMI-TOM, MATRIZ DE LIMIAR DESEMI-TOM, E, MéTODO PARA USAR A MATRIZ DE LIMIAR DESEMI-TOM". Um padrão de semi-tom estocástico foi inventado, oqual possui um espectro de potência de faixa estreita devido àincorporação de um processo de crescimento de ponto. Oespectro de potência de faixa estreita pode ser casado com ascaracterísticas de resolução de impressoras específicas,resultando em texturas de semi-tons impressos mais suaves. Oespectro de um padrão de semi-tom pode ser feito anisotrópico(angularmente dependente), ajudando a desacoplar conjuntos depadrões para impressão colorida com ruído ou matiz de correduzido.
BR9917243-7A 1999-03-31 1999-07-16 Padrão de semi-tom, conjunto de padrões desemi-tom, método para criar uma máscara desemi-tom, máscara de semi-tom, matriz de limiar desemi-tom, e, método para usar a matriz de limiar desemi-tom BR9917243A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/281,840 US6606168B1 (en) 1999-03-31 1999-03-31 Narrow band, anisotropic stochastic halftone patterns and methods of creating and using the same
PCT/US1999/016119 WO2000059209A1 (en) 1999-03-31 1999-07-16 Narrow band, anisotropic stochastic halftone patterns and methods of creating and using the same

Publications (1)

Publication Number Publication Date
BR9917243A true BR9917243A (pt) 2001-12-26

Family

ID=23078999

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9917243-7A BR9917243A (pt) 1999-03-31 1999-07-16 Padrão de semi-tom, conjunto de padrões desemi-tom, método para criar uma máscara desemi-tom, máscara de semi-tom, matriz de limiar desemi-tom, e, método para usar a matriz de limiar desemi-tom

Country Status (12)

Country Link
US (2) US6606168B1 (pt)
EP (1) EP1169850B1 (pt)
JP (1) JP2002540735A (pt)
KR (1) KR100629704B1 (pt)
CN (1) CN1214615C (pt)
AT (1) ATE261226T1 (pt)
AU (1) AU764966B2 (pt)
BR (1) BR9917243A (pt)
CA (1) CA2368983A1 (pt)
DE (1) DE69915385T2 (pt)
ES (1) ES2213379T3 (pt)
WO (1) WO2000059209A1 (pt)

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Also Published As

Publication number Publication date
KR100629704B1 (ko) 2006-09-29
AU5316499A (en) 2000-10-16
CN1214615C (zh) 2005-08-10
CN1352855A (zh) 2002-06-05
US6606168B1 (en) 2003-08-12
US20030210431A1 (en) 2003-11-13
ES2213379T3 (es) 2004-08-16
DE69915385T2 (de) 2005-03-24
CA2368983A1 (en) 2000-10-05
JP2002540735A (ja) 2002-11-26
DE69915385D1 (de) 2004-04-08
US6813044B2 (en) 2004-11-02
EP1169850A1 (en) 2002-01-09
ATE261226T1 (de) 2004-03-15
WO2000059209A1 (en) 2000-10-05
AU764966B2 (en) 2003-09-04
EP1169850B1 (en) 2004-03-03
KR20010112397A (ko) 2001-12-20

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE 9A. E 10A. ANUIDADES

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: REFERENTE AO DESPACHO 8.6 DE RPI 1999 DE 28/04/2009.