DE69223850T2 - Kompressionssteigerung bei graphischen Systemen - Google Patents

Kompressionssteigerung bei graphischen Systemen

Info

Publication number
DE69223850T2
DE69223850T2 DE69223850T DE69223850T DE69223850T2 DE 69223850 T2 DE69223850 T2 DE 69223850T2 DE 69223850 T DE69223850 T DE 69223850T DE 69223850 T DE69223850 T DE 69223850T DE 69223850 T2 DE69223850 T2 DE 69223850T2
Authority
DE
Germany
Prior art keywords
graphic systems
compression increase
compression
increase
graphic
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.)
Expired - Fee Related
Application number
DE69223850T
Other languages
English (en)
Other versions
DE69223850D1 (de
Inventor
Kia Silverbrook
James Robert Metcalfe
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.)
Canon Information Systems Research Australia Pty Ltd
Original Assignee
Canon Information Systems Research Australia Pty Ltd
Canon 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 Canon Information Systems Research Australia Pty Ltd, Canon Inc filed Critical Canon Information Systems Research Australia Pty Ltd
Publication of DE69223850D1 publication Critical patent/DE69223850D1/de
Application granted granted Critical
Publication of DE69223850T2 publication Critical patent/DE69223850T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform
    • 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
    • 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
    • H04N1/64—Systems for the transmission or the storage of the colour picture signal; Details therefor, e.g. coding or decoding means therefor
    • H04N1/642—Adapting to different types of images, e.g. characters, graphs, black and white image portions

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Color Image Communication Systems (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
DE69223850T 1991-05-30 1992-05-29 Kompressionssteigerung bei graphischen Systemen Expired - Fee Related DE69223850T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPK639191 1991-05-30

Publications (2)

Publication Number Publication Date
DE69223850D1 DE69223850D1 (de) 1998-02-12
DE69223850T2 true DE69223850T2 (de) 1998-05-14

Family

ID=3775440

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69223850T Expired - Fee Related DE69223850T2 (de) 1991-05-30 1992-05-29 Kompressionssteigerung bei graphischen Systemen

Country Status (4)

Country Link
US (1) US5845010A (de)
EP (1) EP0516477B1 (de)
JP (1) JP3280067B2 (de)
DE (1) DE69223850T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5359676A (en) * 1993-07-19 1994-10-25 Xerox Corporation Decompression of standard ADCT-compressed document images
EP0770300A2 (de) * 1995-04-12 1997-05-02 Eastman Kodak Company Farbdrucker mit massenspeicher für komprimierte bilddaten
KR19990030882A (ko) * 1997-10-07 1999-05-06 이해규 초점 위치 조절이 가능한 디지탈 스틸 카메라 및 그 제어 방법
JP3876531B2 (ja) * 1998-05-28 2007-01-31 富士通株式会社 文書画像の傾き補正方法
US6671420B1 (en) * 1999-02-16 2003-12-30 Sharp Laboratories Of America, Inc. Method for processing saturated intervals in video sequences
US6289122B1 (en) 1999-04-15 2001-09-11 Electronics For Imaging, Inc. Intelligent detection of text on a page
EP1119186A3 (de) * 2000-01-19 2002-07-31 Xerox Corporation Verfahren zum Erzeugen von aliasfreien Text und Liniengraphiken in komprimierten Dokumenten
US6690826B2 (en) 2000-12-21 2004-02-10 Micron Technology, Inc. System and method for detecting text in mixed graphics data
JP2004289450A (ja) * 2003-03-20 2004-10-14 Canon Inc 情報処理方法及び装置及びプログラム、及びプログラムを格納する記憶媒体
US7728844B2 (en) * 2004-07-09 2010-06-01 Nokia Corporation Restoration of color components in an image model
US20060062478A1 (en) * 2004-08-16 2006-03-23 Grandeye, Ltd., Region-sensitive compression of digital video
US8280157B2 (en) * 2007-02-27 2012-10-02 Sharp Laboratories Of America, Inc. Methods and systems for refining text detection in a digital image
CN109429021B (zh) * 2017-09-01 2022-10-28 半导体元件工业有限责任公司 用于生成高动态范围图像的高动态范围成像设备和方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486785A (en) * 1982-09-30 1984-12-04 International Business Machines Corporation Enhancement of video images by selective introduction of gray-scale pels
US4646355A (en) * 1985-03-15 1987-02-24 Tektronix, Inc. Method and apparatus for input picture enhancement by removal of undersired dots and voids
IT1190565B (it) * 1986-04-07 1988-02-16 Cselt Centro Studi Lab Telecom Procedimento e dispositivo di codifica di segnali numerizati mediante quantizzazione vettoriale
US5079630A (en) * 1987-10-05 1992-01-07 Intel Corporation Adaptive video compression system
EP0339589A3 (de) * 1988-04-28 1992-01-02 Sharp Kabushiki Kaisha Orthogonales Transformationskodierungssystem für Bilddaten
US4941043A (en) * 1988-06-14 1990-07-10 Siemens Aktiengesellschaft Method for reducing blocking artifacts in video scene coding with discrete cosine transformation (DCT) at a low data rate
JPH0219821A (ja) * 1988-07-07 1990-01-23 Canon Inc 光学的ローパスフィルター
GB8827556D0 (en) * 1988-11-25 1988-12-29 Crosfield Electronics Ltd Data compression
US5353132A (en) * 1989-02-06 1994-10-04 Canon Kabushiki Kaisha Image processing device
IL91221A (en) * 1989-08-04 1995-03-30 Ibm Israel Binary text compression method
US4969204A (en) * 1989-11-29 1990-11-06 Eastman Kodak Company Hybrid residual-based hierarchical storage and display method for high resolution digital images in a multiuse environment
US5247589A (en) * 1990-09-26 1993-09-21 Radius Inc. Method for encoding color images
US5333212A (en) * 1991-03-04 1994-07-26 Storm Technology Image compression technique with regionally selective compression ratio

Also Published As

Publication number Publication date
EP0516477A2 (de) 1992-12-02
EP0516477A3 (en) 1993-08-25
DE69223850D1 (de) 1998-02-12
JP3280067B2 (ja) 2002-04-30
US5845010A (en) 1998-12-01
JPH0738759A (ja) 1995-02-07
EP0516477B1 (de) 1998-01-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: CANON INFORMATION SYSTEMS RESEARCH AUSTRALIA PTY.

8339 Ceased/non-payment of the annual fee