DE69622895D1 - Verfahren zur Aufschärfung eines Bildes in einem digitalen Transformationskodierer - Google Patents

Verfahren zur Aufschärfung eines Bildes in einem digitalen Transformationskodierer

Info

Publication number
DE69622895D1
DE69622895D1 DE69622895T DE69622895T DE69622895D1 DE 69622895 D1 DE69622895 D1 DE 69622895D1 DE 69622895 T DE69622895 T DE 69622895T DE 69622895 T DE69622895 T DE 69622895T DE 69622895 D1 DE69622895 D1 DE 69622895D1
Authority
DE
Germany
Prior art keywords
sharpening
image
digital transformation
transformation encoder
encoder
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 - Lifetime
Application number
DE69622895T
Other languages
English (en)
Other versions
DE69622895T2 (de
Inventor
Markku Vehvilaeinen
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.)
Nokia Technology GmbH
Original Assignee
Nokia Technology GmbH
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 Nokia Technology GmbH filed Critical Nokia Technology GmbH
Application granted granted Critical
Publication of DE69622895D1 publication Critical patent/DE69622895D1/de
Publication of DE69622895T2 publication Critical patent/DE69622895T2/de
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
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/527—Global motion vector estimation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration by the use of local operators
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE69622895T 1995-02-06 1996-01-18 Verfahren zur Aufschärfung eines Bildes in einem digitalen Transformationskodierer Expired - Lifetime DE69622895T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI950511A FI97495C (fi) 1995-02-06 1995-02-06 Menetelmä kuvan terävöittämiseksi

Publications (2)

Publication Number Publication Date
DE69622895D1 true DE69622895D1 (de) 2002-09-19
DE69622895T2 DE69622895T2 (de) 2003-04-24

Family

ID=8542765

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69622895T Expired - Lifetime DE69622895T2 (de) 1995-02-06 1996-01-18 Verfahren zur Aufschärfung eines Bildes in einem digitalen Transformationskodierer

Country Status (4)

Country Link
US (1) US5822470A (de)
EP (1) EP0725546B1 (de)
DE (1) DE69622895T2 (de)
FI (1) FI97495C (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0788070A3 (de) * 1996-01-31 1998-08-19 EASTMAN KODAK COMPANY (a New Jersey corporation) Verfahren zur Formung eines Verschärfungs-/Verzerrungsfilters
US6734991B1 (en) * 1999-09-24 2004-05-11 Xerox Corporation Method and apparatus for determining halftone line frequency estimates using MIN/MAX detection
US20060285588A1 (en) * 2005-06-21 2006-12-21 Imagia Technologies Video encoder and encoding method with updateable quantization table

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262460A3 (de) * 1986-09-30 1989-10-25 Siemens Aktiengesellschaft Anordnung zur optimierten Gewichtung uebertragener Transformationskoeffizienten bei Transformationscodierern zum Zwecke der Minimierung von Faltungsverzerrungen
DE68906259T2 (de) * 1989-05-12 1993-12-09 Rai Radiotelevisione Italiana Gerät zur Diskret-Kosinus-Transform-Kodierung digitaler Videosignale.
JP2876258B2 (ja) * 1991-01-23 1999-03-31 株式会社リコー デジタル電子スチルカメラ
US5293434A (en) * 1991-04-10 1994-03-08 International Business Machines Corporation Technique for use in a transform coder for imparting robustness to compressed image data through use of global block transformations
JPH05167863A (ja) * 1991-04-15 1993-07-02 Canon Inc 画像処理方法及び装置
US5539836A (en) * 1991-12-20 1996-07-23 Alaris Inc. Method and apparatus for the realization of two-dimensional discrete cosine transform for an 8*8 image fragment
JP2822362B2 (ja) * 1992-03-24 1998-11-11 日本ビクター株式会社 ディジタル映像信号の文字多重化方法
KR0148130B1 (ko) * 1992-05-18 1998-09-15 강진구 블럭킹아티팩트를 억제시키는 부호화/복호화 방법 및 그 장치
US5523847A (en) * 1992-10-09 1996-06-04 International Business Machines Corporation Digital image processor for color image compression

Also Published As

Publication number Publication date
FI950511A0 (fi) 1995-02-06
EP0725546B1 (de) 2002-08-14
DE69622895T2 (de) 2003-04-24
EP0725546A2 (de) 1996-08-07
EP0725546A3 (de) 1999-10-13
FI97495B (fi) 1996-09-13
FI97495C (fi) 1996-12-27
US5822470A (en) 1998-10-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition