BR0318528A - processo de derivação de modo direto para encobrimento de erros - Google Patents

processo de derivação de modo direto para encobrimento de erros

Info

Publication number
BR0318528A
BR0318528A BRPI0318528-1A BR0318528A BR0318528A BR 0318528 A BR0318528 A BR 0318528A BR 0318528 A BR0318528 A BR 0318528A BR 0318528 A BR0318528 A BR 0318528A
Authority
BR
Brazil
Prior art keywords
derivation process
macroblock
image
mode derivation
direct mode
Prior art date
Application number
BRPI0318528-1A
Other languages
English (en)
Inventor
Cristina Gomila
Jill Macdonald Boyce
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of BR0318528A publication Critical patent/BR0318528A/pt

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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • 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
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • H04N19/895—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder in combination with error concealment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • 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
    • 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
    • H04N19/513—Processing of motion vectors
    • 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

Landscapes

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

Abstract

"PROCESSO DE DERIVAçãO DE MODO DIRETO PARA ENCOBRIMENTO DE ERROS". O encobrimento temporal de macro blocos perdidos/ ausentes conta com o processo de derivação de modo de direção tipicamente padronizado nos decodificadores de video. Quando detectando um erro na forma de uma imagem (fig. 1), um macro bloco co-localizado é encontrado na imagem transmitida anteriormente. O vetor de moção para este macro bloco co-local é determinado (fig. 2). O macro bloco identificado é previsto pelos dados de compensação de moção a partir de uma segunda imagem transmitida anteriormente de acordo com o vetor de moção determinado para o macro bloco co-localizado (fig. 3).
BRPI0318528-1A 2003-10-09 2003-10-09 processo de derivação de modo direto para encobrimento de erros BR0318528A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2003/031825 WO2005046072A1 (en) 2003-10-09 2003-10-09 Direct mode derivation process for error concealment

Publications (1)

Publication Number Publication Date
BR0318528A true BR0318528A (pt) 2006-09-12

Family

ID=34572270

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0318528-1A BR0318528A (pt) 2003-10-09 2003-10-09 processo de derivação de modo direto para encobrimento de erros

Country Status (8)

Country Link
US (1) US20070014359A1 (pt)
EP (1) EP1671427A4 (pt)
JP (1) JP2007521696A (pt)
KR (1) KR100941123B1 (pt)
AU (1) AU2003282462A1 (pt)
BR (1) BR0318528A (pt)
MX (1) MXPA06003925A (pt)
WO (1) WO2005046072A1 (pt)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8036271B2 (en) * 2004-02-24 2011-10-11 Lsi Corporation Method and apparatus for determining a second picture for temporal direct-mode block prediction
US7885339B2 (en) * 2004-11-17 2011-02-08 Microsoft Corporation Bi-directional temporal error concealment
KR20060088461A (ko) * 2005-02-01 2006-08-04 엘지전자 주식회사 영상신호의 엔코딩/디코딩시에 영상블록을 위한 모션벡터를베이스 레이어 픽처의 모션벡터로부터 유도하는 방법 및장치
US7660354B2 (en) * 2005-05-11 2010-02-09 Fang Shi Temporal error concealment for bi-directionally predicted frames
BRPI0613522B1 (pt) * 2005-07-25 2019-09-17 Interdigital Madison Patent Holdings Método e aparelho para a detecção e ocultamento de quadros de vídeo de referência e de não-referência
JP4752631B2 (ja) 2006-06-08 2011-08-17 株式会社日立製作所 画像符号化装置、及び画像符号化方法
US8238442B2 (en) * 2006-08-25 2012-08-07 Sony Computer Entertainment Inc. Methods and apparatus for concealing corrupted blocks of video data
US8265159B2 (en) * 2006-12-27 2012-09-11 Panasonic Corporation Moving picture decoding apparatus
US7933372B2 (en) * 2007-03-08 2011-04-26 Freescale Semiconductor, Inc. Successive interference cancellation based on the number of retransmissions
FR2915342A1 (fr) * 2007-04-20 2008-10-24 Canon Kk Procede et dispositif de codage video
KR100955396B1 (ko) * 2007-06-15 2010-04-29 성균관대학교산학협력단 양-예측 부호화 방법 및 장치, 양-예측 복호화 방법 및장치 및 기록매체
WO2008153262A1 (en) 2007-06-15 2008-12-18 Sungkyunkwan University Foundation For Corporate Collaboration Bi-prediction coding method and apparatus, bi-prediction decoding method and apparatus, and recording midium
US8121189B2 (en) * 2007-09-20 2012-02-21 Microsoft Corporation Video decoding using created reference pictures
US9848209B2 (en) * 2008-04-02 2017-12-19 Microsoft Technology Licensing, Llc Adaptive error detection for MPEG-2 error concealment
US9924184B2 (en) * 2008-06-30 2018-03-20 Microsoft Technology Licensing, Llc Error detection, protection and recovery for video decoding
US9788018B2 (en) * 2008-06-30 2017-10-10 Microsoft Technology Licensing, Llc Error concealment techniques in video decoding
JP2010016453A (ja) * 2008-07-01 2010-01-21 Sony Corp 画像符号化装置および方法、画像復号装置および方法、並びにプログラム
JP2010035137A (ja) * 2008-07-01 2010-02-12 Sony Corp 画像処理装置および方法、並びにプログラム
JP2010016454A (ja) * 2008-07-01 2010-01-21 Sony Corp 画像符号化装置および方法、画像復号装置および方法、並びにプログラム
JPWO2010035730A1 (ja) * 2008-09-24 2012-02-23 ソニー株式会社 画像処理装置および方法
WO2010035733A1 (ja) * 2008-09-24 2010-04-01 ソニー株式会社 画像処理装置および方法
WO2010035734A1 (ja) * 2008-09-24 2010-04-01 ソニー株式会社 画像処理装置および方法
US9131241B2 (en) * 2008-11-25 2015-09-08 Microsoft Technology Licensing, Llc Adjusting hardware acceleration for video playback based on error detection
CN102450016A (zh) * 2009-05-26 2012-05-09 松下电器产业株式会社 运动图像处理装置和运动图像处理方法
JP5115519B2 (ja) * 2009-05-26 2013-01-09 富士通株式会社 動画像復号装置、動画像復号方法及び動画像復号用コンピュータプログラム
US8340510B2 (en) * 2009-07-17 2012-12-25 Microsoft Corporation Implementing channel start and file seek for decoder
EP3657798B1 (en) 2010-10-06 2022-10-12 NTT DoCoMo, Inc. Bi-predictive image decoding method
JP5701018B2 (ja) * 2010-11-12 2015-04-15 三菱電機株式会社 画像復号装置
JP5649412B2 (ja) * 2010-11-12 2015-01-07 三菱電機株式会社 エラーコンシールメント装置及び復号装置
JP5893570B2 (ja) * 2011-01-28 2016-03-23 パナソニック インテレクチュアル プロパティ コーポレーション オブアメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ 画像符号化方法および画像復号化方法
KR20120088488A (ko) * 2011-01-31 2012-08-08 한국전자통신연구원 시간적 움직임 벡터 저장 방법 및 그 장치
GB2493212B (en) * 2011-07-29 2015-03-11 Canon Kk Method and device for error concealment in motion estimation of video data
CN107483925B (zh) 2011-09-09 2020-06-19 株式会社Kt 用于解码视频信号的方法
WO2013089700A1 (en) * 2011-12-14 2013-06-20 Intel Corporation Methods, systems, and computer program products for assessing a macroblock candidate for conversion to a skipped macroblock
US9762904B2 (en) 2011-12-22 2017-09-12 Qualcomm Incorporated Performing motion vector prediction for video coding
US9344742B2 (en) * 2012-08-10 2016-05-17 Google Inc. Transform-domain intra prediction

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5428399A (en) * 1991-04-15 1995-06-27 Vistek Electronics Limited Method and apparatus for image translation with improved motion compensation
US5621467A (en) * 1995-02-16 1997-04-15 Thomson Multimedia S.A. Temporal-spatial error concealment apparatus and method for video signal processors
JP3263807B2 (ja) * 1996-09-09 2002-03-11 ソニー株式会社 画像符号化装置および画像符号化方法
GB2318246B (en) * 1996-10-09 2000-11-15 Sony Uk Ltd Processing digitally encoded signals
US6078616A (en) * 1997-03-13 2000-06-20 Sony Corporation Methods and apparatus for error concealment utilizing temporal domain motion vector estimation
US6404813B1 (en) * 1997-03-27 2002-06-11 At&T Corp. Bidirectionally predicted pictures or video object planes for efficient and flexible video coding
JP3604290B2 (ja) * 1998-09-25 2004-12-22 沖電気工業株式会社 動画像復号方法及び装置
GB2343321B (en) * 1998-11-02 2003-03-26 Nokia Mobile Phones Ltd Error concealment in a video signal
JP3630590B2 (ja) * 1999-08-25 2005-03-16 沖電気工業株式会社 復号化装置及び伝送システム
WO2002071736A2 (en) * 2001-03-05 2002-09-12 Intervideo, Inc. Systems and methods of error resilience in a video decoder
EP1659802B1 (en) * 2001-10-05 2008-07-23 Mitsubishi Electric Information Technology Centre Europe B.V. Method and apparatus for compensating for motion vector errors in image data
CN1265649C (zh) * 2002-01-24 2006-07-19 株式会社日立制作所 运动图像的编码方法、解码方法、编码装置及解码装置
US8175159B2 (en) * 2002-01-24 2012-05-08 Hitachi, Ltd. Moving picture signal coding method, decoding method, coding apparatus, and decoding apparatus
US7003035B2 (en) * 2002-01-25 2006-02-21 Microsoft Corporation Video coding methods and apparatuses
US7068722B2 (en) * 2002-09-25 2006-06-27 Lsi Logic Corporation Content adaptive video processor using motion compensation
US7020207B1 (en) * 2002-12-02 2006-03-28 Hitachi, Ltd. Video error concealment mechanism for block based video decompression
AU2003248858A1 (en) * 2003-01-10 2004-08-10 Thomson Licensing S.A. Decoder apparatus and method for smoothing artifacts created during error concealment
CN100568964C (zh) * 2003-02-18 2009-12-09 诺基亚有限公司 图像解码方法
US7609763B2 (en) * 2003-07-18 2009-10-27 Microsoft Corporation Advanced bi-directional predictive coding of video frames

Also Published As

Publication number Publication date
KR20060090990A (ko) 2006-08-17
WO2005046072A1 (en) 2005-05-19
JP2007521696A (ja) 2007-08-02
EP1671427A1 (en) 2006-06-21
AU2003282462A1 (en) 2005-05-26
MXPA06003925A (es) 2006-07-05
EP1671427A4 (en) 2010-04-07
KR100941123B1 (ko) 2010-02-10
US20070014359A1 (en) 2007-01-18

Similar Documents

Publication Publication Date Title
BR0318528A (pt) processo de derivação de modo direto para encobrimento de erros
BR0317943A (pt) Ocultação de erros espaciais baseada nos modos de intraprevisão transmitidos em um fluxo codificado
BR0306684A (pt) Método de codificação de imagem em movimento e método de decodificação de imagem em movimento
WO2009089032A3 (en) Methods and apparatus for illumination compensation of intra-predicted video
MXPA04007021A (es) Metodo de compensacion de movimiento, metodo de codificacion de imagenes y metodo de decodificacion de imagenes.
WO2009051668A3 (en) Methods and apparatus for video encoding and decoding geometrically partitioned bi-predictive mode partitions
BRPI0414397A (pt) geração de imagem de referência adaptativa
TW200632588A (en) Exposure device, exposure method and production method of a micro-device
BR112012027263A2 (pt) método e aparelho de predição de vetor de movimento temporal
MX2007004408A (es) Metodo y aparato para generar una secuencia de video codificada y para descodificar una secuencia de video codificada al usar prediccion de valor residual de capa intermedia.
TW200636605A (en) Method for deriving coding information for high resolution pictures from low resoluton pictures and coding and decoding devices implementing said method
GB2391126B (en) Calculation method for prediction motion vector
WO2007087619A3 (en) Projection based techniques and apparatus that generate motion vectors used for video stabilization and encoding
BRPI0409860A (pt) processo de solidificação anti-solvente
DK0637893T3 (da) Kodeomsætningsanordning
BRPI0616860B8 (pt) método para decodificar um sinal de vídeo
BR112012009042A2 (pt) predição de vetor de movimento e refinamento
WO2008048490A3 (en) Local illumination and color compensation without explicit signaling
BR0302719A (pt) Método e aparelho de codificação de vìdeo e método e aparelho de decodificação de vìdeo
BRPI0517716A (pt) codificador, decodificador, método de codificação e método de decodificação
HK1059859A1 (en) Tv control resource management
WO2002032142A3 (en) Single-loop motion-compensated fine granular scalability
WO2009088196A3 (ko) 다시점 비디오 부호화 방법과 그 장치 및 다시점 비디오 복호화 방법과 그 장치
MXPA04006643A (es) Metodo de prediccion de imagen en movimiento, metodo y dispositivo de codificacion de imagen en movimiento y metodo y dispositivo de decodificacion de imagen en movimiento.
BRPI0417523A (pt) método e arranjo de dissimulação de erro de domìnio de freqüência, decodificador, e, receptor

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A E 8A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2144 DE 07/02/2012.