FR2643477B1 - Procede de determination de transformee en cosinus discrete - Google Patents

Procede de determination de transformee en cosinus discrete

Info

Publication number
FR2643477B1
FR2643477B1 FR8902347A FR8902347A FR2643477B1 FR 2643477 B1 FR2643477 B1 FR 2643477B1 FR 8902347 A FR8902347 A FR 8902347A FR 8902347 A FR8902347 A FR 8902347A FR 2643477 B1 FR2643477 B1 FR 2643477B1
Authority
FR
France
Prior art keywords
determining
discrete cosinus
cosinus transform
transform
discrete
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
FR8902347A
Other languages
English (en)
Other versions
FR2643477A1 (fr
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR8902347A priority Critical patent/FR2643477B1/fr
Priority to JP4428590A priority patent/JPH02283170A/ja
Priority to DE19904005830 priority patent/DE4005830A1/de
Publication of FR2643477A1 publication Critical patent/FR2643477A1/fr
Application granted granted Critical
Publication of FR2643477B1 publication Critical patent/FR2643477B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Analysis (AREA)
  • Data Mining & Analysis (AREA)
  • Computational Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Theoretical Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • Complex Calculations (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
FR8902347A 1989-02-23 1989-02-23 Procede de determination de transformee en cosinus discrete Expired - Lifetime FR2643477B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR8902347A FR2643477B1 (fr) 1989-02-23 1989-02-23 Procede de determination de transformee en cosinus discrete
JP4428590A JPH02283170A (ja) 1989-02-23 1990-02-23 実数ディジタルデータＸｊのブロックにより表わされるイメージの圧縮の方法
DE19904005830 DE4005830A1 (de) 1989-02-23 1990-02-23 Verfahren und einrichtung zum berechnen von koeffizienten einer diskreten kosinus-transformation in realzeit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8902347A FR2643477B1 (fr) 1989-02-23 1989-02-23 Procede de determination de transformee en cosinus discrete

Publications (2)

Publication Number Publication Date
FR2643477A1 FR2643477A1 (fr) 1990-08-24
FR2643477B1 true FR2643477B1 (fr) 1991-06-07

Family

ID=9379046

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8902347A Expired - Lifetime FR2643477B1 (fr) 1989-02-23 1989-02-23 Procede de determination de transformee en cosinus discrete

Country Status (3)

Country Link
JP (1) JPH02283170A (fr)
DE (1) DE4005830A1 (fr)
FR (1) FR2643477B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3089165B2 (ja) 1994-11-10 2000-09-18 株式会社グラフィックス・コミュニケーション・ラボラトリーズ 動きベクトル探索装置
US5831881A (en) * 1994-12-02 1998-11-03 Sican Gmbh Method and circuit for forward/inverse discrete cosine transform (DCT/IDCT)
JP4688988B2 (ja) * 1997-11-17 2011-05-25 ソニー エレクトロニクス インク ビデオデータの圧縮方法並びに装置、及び伸張方法並びに装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385363A (en) * 1978-12-15 1983-05-24 Compression Labs, Inc. Discrete cosine transformer
FR2599872B1 (fr) * 1986-06-06 1988-07-29 Thomson Csf Dispositifs de calcul de transformees cosinus mono-dimensionnelles, et dispositif de codage et dispositif de decodage d'images comportant de tels dispositifs de calcul
US4829465A (en) * 1986-06-19 1989-05-09 American Telephone And Telegraph Company, At&T Bell Laboratories High speed cosine transform

Also Published As

Publication number Publication date
DE4005830A1 (de) 1990-08-30
FR2643477A1 (fr) 1990-08-24
JPH02283170A (ja) 1990-11-20

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Legal Events

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TP Transmission of property
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ST Notification of lapse