CA2012641A1 - Dispositif de codage de signaux video numeriques par transformations cosinus discretes - Google Patents

Dispositif de codage de signaux video numeriques par transformations cosinus discretes

Info

Publication number
CA2012641A1
CA2012641A1 CA2012641A CA2012641A CA2012641A1 CA 2012641 A1 CA2012641 A1 CA 2012641A1 CA 2012641 A CA2012641 A CA 2012641A CA 2012641 A CA2012641 A CA 2012641A CA 2012641 A1 CA2012641 A1 CA 2012641A1
Authority
CA
Canada
Prior art keywords
block
subjected
buffer
digital video
intrafield
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
CA2012641A
Other languages
English (en)
Other versions
CA2012641C (fr
Inventor
Mario Stroppiana
Luigi Ronchetti
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.)
Rai Radiotelevisione Italiana SpA
Original Assignee
Rai Radiotelevisione Italiana SpA
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 Rai Radiotelevisione Italiana SpA filed Critical Rai Radiotelevisione Italiana SpA
Publication of CA2012641A1 publication Critical patent/CA2012641A1/fr
Application granted granted Critical
Publication of CA2012641C publication Critical patent/CA2012641C/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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
    • 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
    • H04N19/50—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
    • 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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • 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

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)
CA002012641A 1989-05-12 1990-03-20 Dispositif de codage de signaux video numeriques par transformations cosinus discretes Expired - Fee Related CA2012641C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP89830208A EP0396846B1 (fr) 1989-05-12 1989-05-12 Dispositif pour le codage en transform de cosinus discret des signaux vidéos numèriques
EP89830208.8 1989-05-12

Publications (2)

Publication Number Publication Date
CA2012641A1 true CA2012641A1 (fr) 1990-11-12
CA2012641C CA2012641C (fr) 1995-08-15

Family

ID=8203217

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002012641A Expired - Fee Related CA2012641C (fr) 1989-05-12 1990-03-20 Dispositif de codage de signaux video numeriques par transformations cosinus discretes

Country Status (6)

Country Link
US (1) US5005076A (fr)
EP (1) EP0396846B1 (fr)
JP (1) JPH0364188A (fr)
CA (1) CA2012641C (fr)
DE (1) DE68906259T2 (fr)
ES (1) ES2040499T3 (fr)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01288341A (ja) * 1988-05-16 1989-11-20 Agency Of Ind Science & Technol 液相ヒドロホルミル化反応用固体触媒およびその製造方法
JPH0832047B2 (ja) * 1989-04-28 1996-03-27 日本ビクター株式会社 予測符号化装置
US5164828A (en) * 1990-02-26 1992-11-17 Sony Corporation Video signal transmission and method and apparatus for coding video signal used in this
US5453786A (en) * 1990-07-30 1995-09-26 Mpr Teltech Ltd. Method and apparatus for image data processing
JP2549013B2 (ja) * 1990-10-08 1996-10-30 日本ビクター株式会社 データ圧縮装置
JP2860970B2 (ja) * 1991-02-04 1999-02-24 富士通株式会社 画像符号化装置
JPH0530493A (ja) * 1991-07-24 1993-02-05 Sony Corp デイジタルビデオ信号の復号化装置
KR100255528B1 (ko) * 1991-10-31 2000-05-01 요트.게.아. 롤페즈 디지탈 텔레비젼 영상을 송신기에서 수신기로 송신하기 위한 텔레비젼 시스템
SE468736B (sv) * 1991-11-15 1993-03-08 Televerket Foerfarande och apparat foer bildkodning med oeverhoppning av bilder och/eller komponenter
SE9103381L (sv) * 1991-11-15 1993-03-08 Televerket Foerfarande och apparat foer bildkodning med val av steghoejd i kvantiseraren
US5806072A (en) * 1991-12-20 1998-09-08 Olympus Optical Co., Ltd. Electronic imaging apparatus having hierarchical image data storage structure for computer-compatible image data management
JP2636622B2 (ja) * 1992-03-13 1997-07-30 松下電器産業株式会社 ビデオ信号の符号化方法及び復号化方法ならびにビデオ信号の符号化装置及び復号化装置
JP2558996B2 (ja) * 1992-07-21 1996-11-27 松下電器産業株式会社 画像符号化方法及び画像符号化装置
US5325125A (en) * 1992-09-24 1994-06-28 Matsushita Electric Corporation Of America Intra-frame filter for video compression systems
US5982437A (en) * 1992-10-26 1999-11-09 Sony Corporation Coding method and system, and decoding method and system
JPH0828876B2 (ja) * 1993-02-25 1996-03-21 日本電気株式会社 動画像信号のリフレッシュ方法
ES2159575T3 (es) * 1993-11-08 2001-10-16 Sony Corp Metodo de codificacion de animacion, metodo de descodificacion de animacion, medio de grabacion de animacion y codificador de animaciones.
JPH07135653A (ja) * 1993-11-12 1995-05-23 Nec Corp 画像符号化装置
JPH07177511A (ja) * 1993-12-17 1995-07-14 Nec Corp 画像符号化装置
US5600375A (en) * 1994-09-08 1997-02-04 Intel Corporation Rendering an inter verses intra video encoding decision based upon a vertical gradient measure of target video frames
JP3082585B2 (ja) * 1994-09-09 2000-08-28 富士ゼロックス株式会社 画像情報符号化処理装置、画像情報復号化処理装置及び画像情報符号化復号化処理装置
FI97495C (fi) * 1995-02-06 1996-12-27 Nokia Technology Gmbh Menetelmä kuvan terävöittämiseksi
US5959872A (en) * 1996-10-28 1999-09-28 Samsung Electronics Co., Ltd. Apparatus and method for bidirectional scanning of video coefficients
KR100522121B1 (ko) * 1997-12-17 2006-01-12 삼성전자주식회사 버퍼상태에 따른 dct계수를 제한하는 mpeg인코더
US6873368B1 (en) 1997-12-23 2005-03-29 Thomson Licensing Sa. Low noise encoding and decoding method
US7054362B1 (en) 2001-05-29 2006-05-30 Cisco Technology, Inc. Methods and apparatus for updating a reduction ratio
US6763070B1 (en) * 2001-05-29 2004-07-13 Cisco Technology, Inc. Methods and apparatus for selecting a cut-off index
US7162097B1 (en) * 2001-05-29 2007-01-09 Cisco Technology, Inc. Methods and apparatus for transform coefficient filtering
US6912255B2 (en) * 2002-05-30 2005-06-28 Mobixell Netwoks Inc. Bit rate control through selective modification of DCT coefficients
WO2004008773A1 (fr) * 2002-07-11 2004-01-22 Matsushita Electric Industrial Co., Ltd. Methode pour determiner une intensite de filtrage, methode d'encodage d'une image animee, et methode de decodage d'une image animee
US20060062478A1 (en) * 2004-08-16 2006-03-23 Grandeye, Ltd., Region-sensitive compression of digital video
US7634148B2 (en) * 2005-01-07 2009-12-15 Ntt Docomo, Inc. Image signal transforming and inverse-transforming method and computer program product with pre-encoding filtering features
JP2010009624A (ja) * 2009-10-07 2010-01-14 Ntt Docomo Inc 画像信号変換方法、画像信号逆変換方法、画像符号化装置、画像復号装置、画像符号化方法、画像復号方法、画像符号化プログラム、及び、画像復号プログラム
CN115103190A (zh) * 2022-06-14 2022-09-23 晶晨芯半导体(成都)有限公司 编码器码率控制方法及模块、芯片、电子设备和存储介质

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5244512A (en) * 1975-10-06 1977-04-07 Nippon Telegr & Teleph Corp <Ntt> Between-frame coding equipment
JPS56152386A (en) * 1980-04-25 1981-11-25 Oki Electric Ind Co Ltd Coding system of picture signal
CA1251276A (fr) * 1985-03-20 1989-03-14 Toshio Koga Methode et dispositif de codage de signaux d'image numeriques ultilisant la correlation entre les trames
ATE61703T1 (de) * 1985-04-17 1991-03-15 Siemens Ag Verfahren zur bilddatenreduktion fuer digitale fernsehsignale.
DE3613343A1 (de) * 1986-04-19 1987-10-22 Philips Patentverwaltung Hybrid-codierer
US4833535A (en) * 1987-02-04 1989-05-23 Kabushiki Kaisha Toshiba Image transmission apparatus
US4745474A (en) * 1987-04-17 1988-05-17 General Electric Company Two resolution level DPCM system
US4897855A (en) * 1987-12-01 1990-01-30 General Electric Company DPCM system with adaptive quantizer having unchanging bin number ensemble
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
JPH0832047B2 (ja) * 1989-04-28 1996-03-27 日本ビクター株式会社 予測符号化装置

Also Published As

Publication number Publication date
ES2040499T3 (es) 1993-10-16
DE68906259D1 (de) 1993-06-03
US5005076A (en) 1991-04-02
DE68906259T2 (de) 1993-12-09
EP0396846A1 (fr) 1990-11-14
JPH0364188A (ja) 1991-03-19
CA2012641C (fr) 1995-08-15
EP0396846B1 (fr) 1993-04-28

Similar Documents

Publication Publication Date Title
CA2012641A1 (fr) Dispositif de codage de signaux video numeriques par transformations cosinus discretes
CA2109138A1 (fr) Dispositif de codage de signaux numeriques representant des images et dispositif de decodage connexe
EP0595562B1 (fr) Méthode et appareil pour quantifier et inverse-quantifier des signaux d&#39;image
US5434622A (en) Image signal encoding apparatus using adaptive frame/field format compression
KR960006762B1 (ko) 화상부호화를 위한 효율적인 2차원 데이타의 주사선택회로
KR960036787A (ko) 영상 신호 부호화 장치
KR930018537A (ko) 디지탈 vtr의 영상신호 대역 압축장치
KR960009044A (ko) 디지탈 비디오 신호의 기록 방법 및 기록장치
EP1195993A3 (fr) Transcodage d&#39;un signal vidéo
US5657399A (en) Encoding/decoding apparatus using quantizing steps information
KR940008477A (ko) 적응적 주파수 변환기를 가진 영상 부호화기
CA2086991A1 (fr) Appareil et methode de transmission de signaux d&#39;imagerie numeriques comprimes
DE69327989D1 (de) Fernsehsystem zur Übertragung von Bildern in digitaler Form
KR100196838B1 (ko) 블럭벌 상관 관계에 의한 부호화 장치
WO2000013135A3 (fr) Procede et appareil de compression d&#39;images
EP0413570A2 (fr) Compression de données d&#39;image
GB2308771A (en) Video encoding based on inter block correlation
KR0160622B1 (ko) 영상 압축방법 및 그 장치
CN1910920A (zh) 用于音频视频信号分发的自适应带宽分配方法和系统
KR100215446B1 (ko) 와이드화면 영상신호의 기록방법 및 그 장치
JPH04259182A (ja) 動き補償予測フレーム間符号化装置
KR0126482Y1 (ko) 영상압축기의 데이타 손실 방지장치
JPH0786955A (ja) 符号化装置
KR100238757B1 (ko) 주파수 피라미드 방식을 이용한 영상 압축 장치
KR960036694A (ko) 서브 샘플링을 이용한 이산 여현 변환 부호기

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed