CA2093801A1 - Codage de signaux - Google Patents

Codage de signaux

Info

Publication number
CA2093801A1
CA2093801A1 CA2093801A CA2093801A CA2093801A1 CA 2093801 A1 CA2093801 A1 CA 2093801A1 CA 2093801 A CA2093801 A CA 2093801A CA 2093801 A CA2093801 A CA 2093801A CA 2093801 A1 CA2093801 A1 CA 2093801A1
Authority
CA
Canada
Prior art keywords
base layer
data
coding
coded video
inverse
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
CA2093801A
Other languages
English (en)
Other versions
CA2093801C (fr
Inventor
Ian Parke
Michael Erling Nilsson
David Owen Beaumont
David Geoffrey Morrison
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.)
British Telecommunications PLC
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
Application filed by Individual filed Critical Individual
Publication of CA2093801A1 publication Critical patent/CA2093801A1/fr
Application granted granted Critical
Publication of CA2093801C publication Critical patent/CA2093801C/fr
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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/187—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a scalable video layer
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • 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
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

L'invention est une méthode de codage de signaux vidéo en vue de leur transmission. Elle comprend les opérations suivantes : codage des données représentant un signal vidéo par une opération de codage à couche de base à quantificateur de couche de base utilisant un saut de quantification permettant de coder les données vidéo en vue de leur transmission; obtention de données vidéo codées en inverse par exécution d'une opération de codage à couche de base inverse sur les données vidéo codées; obtention de données de différence à partir des données représentant un signal vidéo et les données vidéo à codage inverse; et codage des données de différence par une opération de codage à couche d'accentuation seulement quand l'énergie des données de différence est supérieure à un seuil variable, ce seuil étant inversement proportionnel au saut de quantification de la couche de base.
CA002093801A 1990-10-15 1991-10-15 Codage de signaux Expired - Fee Related CA2093801C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9022326.4 1990-10-15
GB909022326A GB9022326D0 (en) 1990-10-15 1990-10-15 Signal coding

Publications (2)

Publication Number Publication Date
CA2093801A1 true CA2093801A1 (fr) 1992-04-16
CA2093801C CA2093801C (fr) 1997-12-23

Family

ID=10683715

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002093801A Expired - Fee Related CA2093801C (fr) 1990-10-15 1991-10-15 Codage de signaux

Country Status (9)

Country Link
US (1) US5349383A (fr)
EP (1) EP0553215B1 (fr)
JP (1) JP3187422B2 (fr)
AU (1) AU8663891A (fr)
CA (1) CA2093801C (fr)
DE (1) DE69120679T2 (fr)
GB (1) GB9022326D0 (fr)
HK (1) HK112397A (fr)
WO (1) WO1992007445A1 (fr)

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AU718453B2 (en) 1996-07-17 2000-04-13 Sony Corporation Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks
AU714554B2 (en) 1996-07-17 2000-01-06 Sony Corporation Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks
US6381369B1 (en) 1996-07-17 2002-04-30 Sony Corporation Image coding apparatus, image coding method, image decoding method, image decoding apparatus, image data transmitting method and recording medium
US6292591B1 (en) * 1996-07-17 2001-09-18 Sony Coporation Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks
TW359919B (en) 1996-07-17 1999-06-01 Sony Corp Image coding apparatus, image coding method, image decoding method, image decoding apparatus, image data transmitting method and recording medium
US6564262B1 (en) 1996-09-16 2003-05-13 Microsoft Corporation Multiple multicasting of multimedia streams
JPH10117353A (ja) * 1996-10-09 1998-05-06 Nec Corp データ処理装置および受信装置
US6043846A (en) * 1996-11-15 2000-03-28 Matsushita Electric Industrial Co., Ltd. Prediction apparatus and method for improving coding efficiency in scalable video coding
US6633609B1 (en) * 1996-12-24 2003-10-14 Intel Corporation Method and apparatus for bit rate control in a digital video environment for arbitrary bandwidth
US5870146A (en) * 1997-01-21 1999-02-09 Multilink, Incorporated Device and method for digital video transcoding
US6639945B2 (en) 1997-03-14 2003-10-28 Microsoft Corporation Method and apparatus for implementing motion detection in video compression
US6728775B1 (en) 1997-03-17 2004-04-27 Microsoft Corporation Multiple multicasting of multimedia streams
KR100482282B1 (ko) * 1997-07-03 2005-07-11 주식회사 팬택앤큐리텔 신축형(스케일러블)부호화시고위계층(EnhancementLayer)부호화방법
JP3915855B2 (ja) 1997-12-19 2007-05-16 ソニー株式会社 画像符号化装置および画像符号化方法、並びに学習装置および学習方法
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Also Published As

Publication number Publication date
US5349383A (en) 1994-09-20
JP3187422B2 (ja) 2001-07-11
AU8663891A (en) 1992-05-20
EP0553215A1 (fr) 1993-08-04
CA2093801C (fr) 1997-12-23
GB9022326D0 (en) 1990-11-28
DE69120679D1 (de) 1996-08-08
HK112397A (en) 1997-08-29
JPH06502047A (ja) 1994-03-03
WO1992007445A1 (fr) 1992-04-30
EP0553215B1 (fr) 1996-07-03
DE69120679T2 (de) 1996-11-07

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