BR9912527A - Método e aparelho para classificação de imagem e detecção de retìcula - Google Patents

Método e aparelho para classificação de imagem e detecção de retìcula

Info

Publication number
BR9912527A
BR9912527A BR9912527-7A BR9912527A BR9912527A BR 9912527 A BR9912527 A BR 9912527A BR 9912527 A BR9912527 A BR 9912527A BR 9912527 A BR9912527 A BR 9912527A
Authority
BR
Brazil
Prior art keywords
image
halftone
detection
pixels
image classification
Prior art date
Application number
BR9912527-7A
Other languages
English (en)
Inventor
Ron J Karidi
Original Assignee
Electronics For Imagiging Inc
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 Electronics For Imagiging Inc filed Critical Electronics For Imagiging Inc
Publication of BR9912527A publication Critical patent/BR9912527A/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
    • H04N1/40—Picture signal circuits
    • H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone

Landscapes

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

Abstract

Patente de Invenção: <B>"MéTODO E APARELHO PARA CLASSIFICAçãO DE IMAGEM E DETECçãO DE RETìCULA"<D>. Um método e aparelho para classificação de imagem inclui uma primeira modalidade na qual a detecção de retícula é executada baseada no tamanho de um limite estabelecido entre uma classe de pixel claros e uma classe de pixel escuros e adicionalmente baseada na informação da imagem contida dentro de cada plano de imagem único (isto é, dentro de um plano de cor). Esta modalidade da invenção é baseada na propriedade característica das imagens de que as áreas de retícula dentro da imagem possuem parâmetros de limite maiores do que as área que não são de retícula dentro da imagem. Uma segunda modalidade da invenção igualmente preferida proporciona uma técnica de correlação de diferença de cor cruzada que é utilizada para detectar pixel de retícula.
BR9912527-7A 1998-07-07 1999-07-07 Método e aparelho para classificação de imagem e detecção de retìcula BR9912527A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/111,047 US6185335B1 (en) 1998-07-07 1998-07-07 Method and apparatus for image classification and halftone detection
PCT/US1999/015354 WO2000002378A1 (en) 1998-07-07 1999-07-07 Method and apparatus for image classification and halftone detection

Publications (1)

Publication Number Publication Date
BR9912527A true BR9912527A (pt) 2001-05-02

Family

ID=22336325

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9912527-7A BR9912527A (pt) 1998-07-07 1999-07-07 Método e aparelho para classificação de imagem e detecção de retìcula

Country Status (8)

Country Link
US (1) US6185335B1 (pt)
EP (1) EP1093697B1 (pt)
JP (1) JP2003505893A (pt)
AU (1) AU741883B2 (pt)
BR (1) BR9912527A (pt)
CA (1) CA2331373A1 (pt)
DE (1) DE69934799T2 (pt)
WO (1) WO2000002378A1 (pt)

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US7148998B2 (en) * 2002-05-31 2006-12-12 Hewlett-Packard Development Company, L.P. System and method for automatic descreening of digital images
US7313268B2 (en) * 2002-10-31 2007-12-25 Eastman Kodak Company Method for using effective spatio-temporal image recomposition to improve scene classification
US20040264768A1 (en) * 2003-06-30 2004-12-30 Xerox Corporation Systems and methods for associating color profiles with a scanned input image using spatial attributes
US7453604B2 (en) * 2003-06-30 2008-11-18 Xerox Corporation Systems and methods for estimating an image marking process using scanned image attributes
US20040264769A1 (en) * 2003-06-30 2004-12-30 Xerox Corporation Systems and methods for associating color profiles with a scanned input image using spatial attributes
US7474783B2 (en) * 2003-06-30 2009-01-06 Xerox Corporation Systems and methods for associating color profiles with a scanned input image using spatial attributes
US20040264770A1 (en) * 2003-06-30 2004-12-30 Xerox Corporation Systems and methods for associating color profiles with a scanned input image using spatial attributes
US7336401B2 (en) * 2003-12-19 2008-02-26 Xerox Corporation Systems and methods for estimating an image marking process using event mapping of scanned image attributes
US7929161B2 (en) * 2004-04-15 2011-04-19 Hewlett-Packard Development Company, L.P. Image processing system and method
US7684079B2 (en) 2004-12-02 2010-03-23 Canon Kabushiki Kaisha Image forming apparatus and its control method
JP6078038B2 (ja) * 2014-10-31 2017-02-08 株式会社Pfu 画像処理装置、画像処理方法、および、プログラム
US9628635B1 (en) 2016-06-30 2017-04-18 Xerox Corporation Systems and methods for halftone frequency detection

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Also Published As

Publication number Publication date
CA2331373A1 (en) 2000-01-13
DE69934799D1 (de) 2007-02-22
WO2000002378A1 (en) 2000-01-13
JP2003505893A (ja) 2003-02-12
EP1093697A1 (en) 2001-04-25
DE69934799T2 (de) 2007-10-11
AU741883B2 (en) 2001-12-13
EP1093697B1 (en) 2007-01-10
AU4974099A (en) 2000-01-24
US6185335B1 (en) 2001-02-06

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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 A 4A, 5A, 6A, 7A E 8A 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 PUBLICADO NA RPI 1911 DE 21/08/2007.