ES2081270T1 - Metodo y aparato para realizar una imagen de escala de grises utilizando una mascara de ruido azul. - Google Patents

Metodo y aparato para realizar una imagen de escala de grises utilizando una mascara de ruido azul.

Info

Publication number
ES2081270T1
ES2081270T1 ES92901101T ES92901101T ES2081270T1 ES 2081270 T1 ES2081270 T1 ES 2081270T1 ES 92901101 T ES92901101 T ES 92901101T ES 92901101 T ES92901101 T ES 92901101T ES 2081270 T1 ES2081270 T1 ES 2081270T1
Authority
ES
Spain
Prior art keywords
pixel
gray scale
blue noise
scale image
noise mask
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
ES92901101T
Other languages
English (en)
Other versions
ES2081270T3 (es
Inventor
Kevin J Parker
Theophano Mitsa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Research Corp Technologies Inc
Original Assignee
Research Corp Technologies 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24492766&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2081270(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Research Corp Technologies Inc filed Critical Research Corp Technologies Inc
Publication of ES2081270T1 publication Critical patent/ES2081270T1/es
Application granted granted Critical
Publication of ES2081270T3 publication Critical patent/ES2081270T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4084—Scaling of whole images or parts thereof, e.g. expanding or contracting in the transform domain, e.g. fast Fourier transform [FFT] domain scaling
    • 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
    • H04N1/40075—Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning
    • 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
    • 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
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/4105—Bandwidth or redundancy reduction for halftone screened pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Holo Graphy (AREA)

Abstract

SE PRESENTA UN METODO Y UN SISTEMA PARA LA CONVERSION EN UNA IMAGEN DE TONOS MEDIOS DE UNA IMAGEN DE ESCALA DE GRISES (500) USANDO UNA COMPARACION DE PIXEL A PIXEL (402) DE LA IMAGEN DE ESCALA DE GRISES CONTRA UNA MASCARA AZUL DE RUIDO (502), EN DICHO METODO LA IMAGEN DE ESCALA DE GRISES SE EXPLORA SOBRE UNA BASE DE PIXEL A PIXEL Y SE COMPARA SOBRE UNA BASE DE PIXEL A PIXEL CON UNA MATRIZ DE LOS PUNTOS DE DATOS CORRESPONDIENTES CONTENIDOS EN UNA MASCARA AZUL DE RUIDO ALMACENADA EN UNA PROM (406) O EN LA MEMORIA DE UN ORDENADOR PARA PRODUCIR LA IMAGEN DE TONOS MEDIOS DESEADA. SE HAN DESCUBIERTO METODOS DE TONOS MEDIOS IMPLEMENTADOS TANTO DIGITAL COMO OPTICAMENTE. TAMBIEN SE PRESENTA LAS MODIFICACIONES ESPECIFICAS DE LA APLICACION DE LA MASCARA AZUL DE RUIDOS ASI COMO SU USO PARA PRODUCIR IMAGENES EN COLOR DE TONOS MEDIOS.
ES92901101T 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul. Expired - Lifetime ES2081270T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/622,056 US5111310A (en) 1990-12-04 1990-12-04 Method and apparatus for halftone rendering of a gray scale image using a blue noise mask

Publications (2)

Publication Number Publication Date
ES2081270T1 true ES2081270T1 (es) 1996-03-01
ES2081270T3 ES2081270T3 (es) 2000-12-16

Family

ID=24492766

Family Applications (3)

Application Number Title Priority Date Filing Date
ES92901101T Expired - Lifetime ES2081270T3 (es) 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.
ES96201205T Expired - Lifetime ES2161325T3 (es) 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.
ES96201206T Expired - Lifetime ES2146832T3 (es) 1990-12-04 1991-12-03 Matriz dither para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.

Family Applications After (2)

Application Number Title Priority Date Filing Date
ES96201205T Expired - Lifetime ES2161325T3 (es) 1990-12-04 1991-12-03 Procedimiento y aparato para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.
ES96201206T Expired - Lifetime ES2146832T3 (es) 1990-12-04 1991-12-03 Matriz dither para reproducir en medio tono una imagen de escala de grises utilizando una mascara de ruido azul.

Country Status (10)

Country Link
US (1) US5111310A (es)
EP (4) EP0749231B1 (es)
JP (1) JP2622429B2 (es)
AT (3) ATE203134T1 (es)
AU (1) AU9088491A (es)
CA (1) CA2097508C (es)
DE (4) DE560872T1 (es)
ES (3) ES2081270T3 (es)
IE (3) IE914190A1 (es)
WO (1) WO1992010905A1 (es)

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JP6580091B2 (ja) 2017-07-05 2019-09-25 キヤノン株式会社 画像処理装置、画像処理方法、及びプログラム
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CN115298036A (zh) 2020-03-20 2022-11-04 马姆杰特科技有限公司 用于高速单程打印的抖动方法
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DE560872T1 (de) 1996-02-15
EP0749232A1 (en) 1996-12-18
ATE203134T1 (de) 2001-07-15
EP0749231A1 (en) 1996-12-18
DE69132658D1 (de) 2001-08-16
EP0560872A1 (en) 1993-09-22
EP0749231B1 (en) 2001-07-11
EP0749232B1 (en) 2000-04-05
DE69132353D1 (de) 2000-09-07
JPH06508007A (ja) 1994-09-08
DE69132353T2 (de) 2001-01-18
ES2161325T3 (es) 2001-12-01
DE69132104D1 (de) 2000-05-11
DE69132658T2 (de) 2001-11-15
ATE191594T1 (de) 2000-04-15
ATE195206T1 (de) 2000-08-15
IE20000938A1 (en) 2001-03-21
ES2146832T3 (es) 2000-08-16
ES2081270T3 (es) 2000-12-16
CA2097508C (en) 2002-02-12
US5111310A (en) 1992-05-05
EP0560872B1 (en) 2000-08-02
EP0746142A1 (en) 1996-12-04
WO1992010905A1 (en) 1992-06-25
IE20000314A1 (en) 2000-11-01
AU9088491A (en) 1992-07-08
EP0560872A4 (en) 1993-11-03
DE69132104T2 (de) 2000-08-24
IE914190A1 (en) 1992-06-17
JP2622429B2 (ja) 1997-06-18
CA2097508A1 (en) 1992-06-05

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