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)

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5506623A (en) * 1991-12-19 1996-04-09 Sony Corporation Data compression methods and systems with quantization distortion measurement means
JP3241778B2 (ja) 1991-12-24 2001-12-25 ソニー株式会社 符号化装置
US5621760A (en) * 1992-07-21 1997-04-15 Kokusai Electric Co., Ltd. Speech coding transmission system and coder and decoder therefor
EP0959629A3 (fr) * 1992-10-28 2003-01-02 Victor Company Of Japan, Limited Appareil de reproduction à taux de transfert variable
FR2697393A1 (fr) * 1992-10-28 1994-04-29 Philips Electronique Lab Dispositif de codage de signaux numériques représentatifs d'images, et dispositif de décodage correspondant.
US5426463A (en) * 1993-02-22 1995-06-20 Rca Thomson Licensing Corporation Apparatus for controlling quantizing in a video signal compressor
JP2979900B2 (ja) * 1993-05-26 1999-11-15 日本ビクター株式会社 記録媒体
US5497246A (en) * 1993-07-15 1996-03-05 Asahi Kogaku Kogyo Kabushiki Kaisha Image signal processing device
US5537440A (en) * 1994-01-07 1996-07-16 Motorola, Inc. Efficient transcoding device and method
US5734432A (en) * 1994-07-15 1998-03-31 Lucent Technologies, Inc. Method of incorporating a variable rate auxiliary data stream with a variable rate primary data stream
EP2190207A1 (fr) * 1994-10-21 2010-05-26 AT&T Corporation Procédé de vérification de mémoire tampon vidéo
JP3058028B2 (ja) * 1994-10-31 2000-07-04 三菱電機株式会社 画像符号化データ再符号化装置
US5937098A (en) * 1995-02-06 1999-08-10 Asahi Kogaku Kogyo Kabushiki Kaisha Adaptive quantization of orthogonal transform coefficients for setting a target amount of compression
US5734677A (en) * 1995-03-15 1998-03-31 The Chinese University Of Hong Kong Method for compression of loss-tolerant video image data from multiple sources
JPH08256341A (ja) * 1995-03-17 1996-10-01 Sony Corp 画像信号符号化方法、画像信号符号化装置、画像信号記録媒体、及び画像信号復号化装置
KR100209410B1 (ko) * 1995-03-28 1999-07-15 전주범 영상 신호 부호화 장치
US5621660A (en) * 1995-04-18 1997-04-15 Sun Microsystems, Inc. Software-based encoder for a software-implemented end-to-end scalable video delivery system
KR0153671B1 (ko) * 1995-06-30 1998-11-16 배순훈 고선명 텔레비젼 엔코더의 레이트 콘트롤러
CA2208950A1 (fr) * 1996-07-03 1998-01-03 Xuemin Chen Commande de cadence pour le codage de signal video digital stereoscopique
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
AU714554B2 (en) 1996-07-17 2000-01-06 Sony Corporation 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
AU718453B2 (en) 1996-07-17 2000-04-13 Sony Corporation Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks
US6292591B1 (en) * 1996-07-17 2001-09-18 Sony Coporation Image coding and decoding using mapping coefficients corresponding to class information of pixel blocks
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
US6731811B1 (en) * 1997-12-19 2004-05-04 Voicecraft, Inc. Scalable predictive coding method and apparatus
JPH11285002A (ja) * 1998-02-02 1999-10-15 Sony Corp 動画像符号化装置及び動画像符号化方法
US5995150A (en) * 1998-02-20 1999-11-30 Winbond Electronics Corporation America Dual compressed video bitstream camera for universal serial bus connection
US6956899B2 (en) * 1998-03-23 2005-10-18 International Business Machines Corporation Precise bit control apparatus with look-ahead for MPEG encoding
US6785330B1 (en) * 1999-08-19 2004-08-31 Ghildra Holdings, Inc. Flexible video encoding/decoding method
US6788740B1 (en) * 1999-10-01 2004-09-07 Koninklijke Philips Electronics N.V. System and method for encoding and decoding enhancement layer data using base layer quantization data
US6480547B1 (en) * 1999-10-15 2002-11-12 Koninklijke Philips Electronics N.V. System and method for encoding and decoding the residual signal for fine granular scalable video
US6493387B1 (en) * 2000-04-10 2002-12-10 Samsung Electronics Co., Ltd. Moving picture coding/decoding method and apparatus having spatially scalable architecture and signal-to-noise ratio scalable architecture together
US6621865B1 (en) 2000-09-18 2003-09-16 Powerlayer Microsystems, Inc. Method and system for encoding and decoding moving and still pictures
ATE346461T1 (de) * 2000-09-22 2006-12-15 Koninkl Philips Electronics Nv Videocodierung mit hybrider temporeller und snr- bezogener feingranularer skalierbarkeit
EP1323316A2 (fr) 2000-09-22 2003-07-02 Koninklijke Philips Electronics N.V. Echelonnabilite modulaire fine de compensation de mouvement a double boucle
US6940905B2 (en) * 2000-09-22 2005-09-06 Koninklijke Philips Electronics N.V. Double-loop motion-compensation fine granular scalability
AU2002332706A1 (en) * 2001-08-30 2003-03-18 Faroudja Cognition Systems, Inc. Multi-layer video compression system with synthetic high frequencies
US7039113B2 (en) * 2001-10-16 2006-05-02 Koninklijke Philips Electronics N.V. Selective decoding of enhanced video stream
US6909753B2 (en) * 2001-12-05 2005-06-21 Koninklijke Philips Electronics, N.V. Combined MPEG-4 FGS and modulation algorithm for wireless video transmission
KR100711989B1 (ko) * 2002-03-12 2007-05-02 노키아 코포레이션 효율적으로 개선된 스케일러블 오디오 부호화
US20060159352A1 (en) * 2005-01-18 2006-07-20 Faisal Ishtiaq Method and apparatus for encoding a video sequence
KR100716998B1 (ko) * 2005-05-24 2007-05-10 삼성전자주식회사 블록화 현상을 감소시키기 위한 부호화 및 복호화 장치 및그 방법과, 이를 구현하기 위한 프로그램이 기록된 기록매체
KR20070074451A (ko) * 2006-01-09 2007-07-12 엘지전자 주식회사 베이스 레이어의 영상신호를 레이어간 예측에 사용하는방법
JP4991762B2 (ja) * 2006-01-09 2012-08-01 エルジー エレクトロニクス インコーポレイティド 映像信号のエンコーディング／デコーディング方法及び装置
ITTO20110414A1 (it) * 2011-05-11 2012-11-12 St Microelectronics Pvt Ltd Procedimento ed apparecchiatura per elaborare segnali video, prodotto informatico e segnale codificato relativi

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4541012A (en) * 1982-01-04 1985-09-10 Compression Labs, Inc. Video bandwidth reduction system employing interframe block differencing and transform domain coding
GB8603880D0 (en) * 1986-02-17 1986-03-26 Indep Broadcasting Authority Hybrid interpolative predictive code
FR2625060B1 (fr) * 1987-12-16 1990-10-05 Guichard Jacques Procede et dispositifs de codage et de decodage pour la transmission d'images a travers un reseau a debit variable
US4984076A (en) * 1988-07-27 1991-01-08 Kabushiki Kaisha Toshiba Image compression coding system
US4958226A (en) * 1989-09-27 1990-09-18 At&T Bell Laboratories Conditional motion compensated interpolation of digital motion video
FR2660139B1 (fr) * 1990-03-23 1995-08-25 France Etat Procede de codage et de transmission a au moins deux niveaux de qualite d'images numeriques appartenant a une sequence d'images, et dispositifs correspondants.
US5159447A (en) * 1991-05-23 1992-10-27 At&T Bell Laboratories Buffer control for variable bit-rate channel
US5253058A (en) * 1992-04-01 1993-10-12 Bell Communications Research, Inc. Efficient coding scheme for multilevel video transmission

Also Published As

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

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