CA2010637A1 - Methode de reduction d'images binaires - Google Patents

Methode de reduction d'images binaires

Info

Publication number
CA2010637A1
CA2010637A1 CA2010637A CA2010637A CA2010637A1 CA 2010637 A1 CA2010637 A1 CA 2010637A1 CA 2010637 A CA2010637 A CA 2010637A CA 2010637 A CA2010637 A CA 2010637A CA 2010637 A1 CA2010637 A1 CA 2010637A1
Authority
CA
Canada
Prior art keywords
alpha
horizontal
vertical
thin line
pixels
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
CA2010637A
Other languages
English (en)
Other versions
CA2010637C (fr
Inventor
Kaoru Wakabayashi
Fumio Adachi
Tadashi Ichikawa
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.)
NTT Inc
Original Assignee
Individual
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
Priority claimed from JP1-119539A external-priority patent/JP3024975B2/ja
Application filed by Individual filed Critical Individual
Publication of CA2010637A1 publication Critical patent/CA2010637A1/fr
Application granted granted Critical
Publication of CA2010637C publication Critical patent/CA2010637C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)
CA002010637A 1989-02-23 1990-02-22 Methode de reduction d'images binaires Expired - Lifetime CA2010637C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP41533/1989 1989-02-23
JP4153389 1989-02-23
JP1-119539A JP3024975B2 (ja) 1989-02-23 1989-05-12 縮小変換方法
JP119539/1989 1989-05-12

Publications (2)

Publication Number Publication Date
CA2010637A1 true CA2010637A1 (fr) 1990-08-23
CA2010637C CA2010637C (fr) 1995-04-11

Family

ID=26381173

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002010637A Expired - Lifetime CA2010637C (fr) 1989-02-23 1990-02-22 Methode de reduction d'images binaires

Country Status (5)

Country Link
US (1) US5054099A (fr)
EP (1) EP0401058B1 (fr)
KR (1) KR940001049B1 (fr)
CA (1) CA2010637C (fr)
DE (1) DE69029429T2 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69033579T2 (de) * 1989-04-10 2001-03-08 Canon K.K., Tokio/Tokyo Bildverkleinerungsgerät und Verfahren
US5457754A (en) * 1990-08-02 1995-10-10 University Of Cincinnati Method for automatic contour extraction of a cardiac image
JP2562725B2 (ja) * 1990-09-26 1996-12-11 大日本スクリーン製造株式会社 縮小画像生成装置
EP0501814B1 (fr) * 1991-03-01 1998-12-16 Canon Kabushiki Kaisha Appareil de traitement d'images
JPH064655A (ja) * 1992-06-22 1994-01-14 Nippon Telegr & Teleph Corp <Ntt> 高速画像縮小変換装置
EP0644684B1 (fr) * 1993-09-17 2000-02-02 Eastman Kodak Company Circuit intégré de reéchantillonnage numérique pour rédimensionnement d'image rapide
JP3433983B2 (ja) * 1993-09-20 2003-08-04 株式会社日立製作所 画像縮小装置および画像縮小方法
US5790714A (en) * 1994-11-01 1998-08-04 International Business Machines Corporation System and method for scaling video
JP3119150B2 (ja) * 1995-02-02 2000-12-18 富士ゼロックス株式会社 画像処理装置および画像処理方法
JP3427554B2 (ja) * 1995-03-01 2003-07-22 オムロン株式会社 画像処理装置及び方法
JP3684029B2 (ja) * 1997-05-12 2005-08-17 理想科学工業株式会社 画像太線化処理方法および装置
JP2001060247A (ja) * 1999-06-14 2001-03-06 Fuji Xerox Co Ltd 画像処理装置および画像処理方法
TWI323606B (en) * 2006-02-22 2010-04-11 Huper Lab Co Ltd Image noise reduction method based on local correlation
JP4963674B2 (ja) * 2008-02-21 2012-06-27 キヤノン株式会社 画像処理装置及び画像処理方法
JP5316385B2 (ja) * 2009-12-01 2013-10-16 富士ゼロックス株式会社 画像処理装置及び画像処理プログラム
KR101760343B1 (ko) * 2010-08-23 2017-07-21 에스프린팅솔루션 주식회사 화상형성장치 및 그 장치에서 축소 이미지를 인쇄하는 방법
JP6541320B2 (ja) * 2014-09-24 2019-07-10 キヤノン株式会社 画像処理装置、画像処理方法、コンピュータプログラム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5739671A (en) * 1980-08-20 1982-03-04 Sanyo Electric Co Ltd Shrinking system for facsimile picture signal
JPS5915359A (ja) * 1982-07-16 1984-01-26 Matsushita Graphic Commun Syst Inc 画像縮小方法
US4628534A (en) * 1984-07-06 1986-12-09 Honeywell Information Systems Inc. Method for changing the resolution of compressed image data
JPS63184879A (ja) * 1987-01-28 1988-07-30 Toshiba Corp 画像処理装置
CA1306052C (fr) * 1988-03-18 1992-08-04 Yoshiyuki Okada Methode et dispositif pour reduire une image sans faire disparaitre les lignes fines

Also Published As

Publication number Publication date
EP0401058A2 (fr) 1990-12-05
CA2010637C (fr) 1995-04-11
DE69029429T2 (de) 1997-07-24
DE69029429D1 (de) 1997-01-30
KR940001049B1 (ko) 1994-02-08
EP0401058A3 (fr) 1992-10-28
EP0401058B1 (fr) 1996-12-18
JPH02290369A (ja) 1990-11-30
KR910016186A (ko) 1991-09-30
US5054099A (en) 1991-10-01

Similar Documents

Publication Publication Date Title
CA2010637A1 (fr) Methode de reduction d&#39;images binaires
CA2087802A1 (fr) Dispositif de codage de signaux d&#39;images animees a correction des effets dus aux mouvements et a transformation orthogonale
CA2077289A1 (fr) Conversion chromatique de lignes
CA2060831A1 (fr) Dispositif et methode d&#39;entrelacement de pixels
CA1205178A (fr) Methode et dispositif de codage et de decodage de signaux video
EP0334524A3 (fr) Convertisseur de matrice
KR840002786A (ko) 텔레비전 수상기
EP0264965A3 (fr) Générateur de signaux de commutation à partir de la différence de signaux vidéo
CA2138834A1 (fr) Systeme d&#39;affichage video a desentrelacement numerique
JPS57160264A (en) Recorder of half tone picture
EP1589766A3 (fr) Décompression vidéo basé sur les objets pour segments d&#39;image de formes arbitraires
EP0397965A3 (fr) Dispositif d&#39;affichage
EP0395264A3 (fr) Traitement de signal vidéo dépendant du mouvement
CA2151079A1 (fr) Methode de detection du mouvement differentiel a l&#39;aide du fond d&#39;image
MY105992A (en) Control signal generation for a television system.
CA2063472A1 (fr) Methode de conversion de definition
JPS5335313A (en) Picture image communication system
EP0854440A3 (fr) Appareil de traitement d&#39;images capable de générer des images basées sur des données de transmittance
WO1999034321A3 (fr) Production d&#39;une image matricielle amelioree
AU3128684A (en) Checking record quality
JPS5379421A (en) Television signal conversion circuit
CA2161491A1 (fr) Ecran plasma
TW376641B (en) Image-sensor with many pixel-sensor-areas
CA2389599A1 (fr) Procede et circuit de mise en evidence de contours
CA2119087A1 (fr) Traitement de correction du gamma dans les signaux video

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry