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BRPI0418423A - técnica de ocultação de erro utilização previsão ponderada - Google Patents

técnica de ocultação de erro utilização previsão ponderada

Info

Publication number
BRPI0418423A
BRPI0418423A BRPI0418423-8A BRPI0418423A BRPI0418423A BR PI0418423 A BRPI0418423 A BR PI0418423A BR PI0418423 A BRPI0418423 A BR PI0418423A BR PI0418423 A BRPI0418423 A BR PI0418423A
Authority
BR
Brazil
Prior art keywords
error hiding
hiding technique
macroblock
technique use
weighted
Prior art date
Application number
BRPI0418423-8A
Other languages
English (en)
Inventor
Peng Yin
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 BRPI0418423A publication Critical patent/BRPI0418423A/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
    • 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
    • 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
    • H04N19/142—Detection of scene cut or scene change
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

TéCNICA DE OCULTAçãO DE ERRO UTILIZANDO PREVISãO PONDERADA Um decodificador (10) oculta erros em uma imagem codificada constituída por uma sequência de macroblocos pelo exame de cada macrobloco por erros de pixel. Se tais erros existirem, então cada uma das pelo menos duas imagens de macroblocos de cada uma das duas imagens diferentes é ponderada para resultar em uma previsão ponderada (WP) para estimativa de valores faltando/corrompidos para ocultar o macrobloco com erros de pixel.
BRPI0418423-8A 2004-02-27 2004-02-27 técnica de ocultação de erro utilização previsão ponderada BRPI0418423A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2004/006205 WO2005094086A1 (en) 2004-02-27 2004-02-27 Error concealment technique using weighted prediction

Publications (1)

Publication Number Publication Date
BRPI0418423A true BRPI0418423A (pt) 2007-05-15

Family

ID=34957260

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0418423-8A BRPI0418423A (pt) 2004-02-27 2004-02-27 técnica de ocultação de erro utilização previsão ponderada

Country Status (6)

Country Link
US (1) US20080225946A1 (pt)
EP (1) EP1719347A1 (pt)
JP (1) JP4535509B2 (pt)
CN (1) CN1922889B (pt)
BR (1) BRPI0418423A (pt)
WO (1) WO2005094086A1 (pt)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060055472A (ko) * 2003-06-25 2006-05-23 톰슨 라이센싱 변위된 프레임 차분을 이용하여 가중된 예측 추정을 위한방법 및 장치
US8238442B2 (en) * 2006-08-25 2012-08-07 Sony Computer Entertainment Inc. Methods and apparatus for concealing corrupted blocks of video data
JP5099371B2 (ja) * 2007-01-31 2012-12-19 日本電気株式会社 画質評価方法、画質評価装置および画質評価プログラム
ATE526787T1 (de) * 2007-12-11 2011-10-15 Alcatel Lucent Verfahren zum zustellen eines videostroms über einen drahtlosen kanal
EP2071852A1 (en) 2007-12-11 2009-06-17 Alcatel Lucent Process for delivering a video stream over a wireless bidirectional channel between a video encoder and a video decoder
US20090154567A1 (en) * 2007-12-13 2009-06-18 Shaw-Min Lei In-loop fidelity enhancement for video compression
WO2010001832A1 (ja) * 2008-06-30 2010-01-07 株式会社東芝 動画像予測符号化装置および動画像予測復号化装置
US9161057B2 (en) * 2009-07-09 2015-10-13 Qualcomm Incorporated Non-zero rounding and prediction mode selection techniques in video encoding
US8711930B2 (en) * 2009-07-09 2014-04-29 Qualcomm Incorporated Non-zero rounding and prediction mode selection techniques in video encoding
US8995526B2 (en) * 2009-07-09 2015-03-31 Qualcomm Incorporated Different weights for uni-directional prediction and bi-directional prediction in video coding
US9521424B1 (en) * 2010-10-29 2016-12-13 Qualcomm Technologies, Inc. Method, apparatus, and manufacture for local weighted prediction coefficients estimation for video encoding
US9106916B1 (en) 2010-10-29 2015-08-11 Qualcomm Technologies, Inc. Saturation insensitive H.264 weighted prediction coefficients estimation
US8428375B2 (en) * 2010-11-17 2013-04-23 Via Technologies, Inc. System and method for data compression and decompression in a graphics processing system
JP5547622B2 (ja) * 2010-12-06 2014-07-16 日本電信電話株式会社 映像再生方法、映像再生装置、映像再生プログラム及び記録媒体
US20120207214A1 (en) * 2011-02-11 2012-08-16 Apple Inc. Weighted prediction parameter estimation
JP6188550B2 (ja) * 2013-11-14 2017-08-30 Kddi株式会社 画像復号装置
US11509930B2 (en) 2016-07-12 2022-11-22 Electronics And Telecommunications Research Institute Image encoding/decoding method and recording medium therefor
US11259016B2 (en) * 2019-06-30 2022-02-22 Tencent America LLC Method and apparatus for video coding
US11638025B2 (en) * 2021-03-19 2023-04-25 Qualcomm Incorporated Multi-scale optical flow for learned video compression

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5631979A (en) * 1992-10-26 1997-05-20 Eastman Kodak Company Pixel value estimation technique using non-linear prediction
GB2362533A (en) * 2000-05-15 2001-11-21 Nokia Mobile Phones Ltd Encoding a video signal with an indicator of the type of error concealment used
JP2004531925A (ja) * 2001-03-05 2004-10-14 インタービデオインコーポレイテッド 圧縮されたビデオビットストリームにおける冗長な動きベクトルを符号化し復号するシステム及び方法
JP2004007379A (ja) * 2002-04-10 2004-01-08 Toshiba Corp 動画像符号化方法及び動画像復号化方法
US8406301B2 (en) * 2002-07-15 2013-03-26 Thomson Licensing Adaptive weighting of reference pictures in video encoding
WO2004054225A2 (en) * 2002-12-04 2004-06-24 Thomson Licensing S.A. Encoding of video cross-fades using weighted prediction
JP2006513634A (ja) * 2003-01-10 2006-04-20 トムソン ライセンシング 符号化ストリーム中で伝送されたイントラ予測モードに基づく空間的誤り隠蔽
US7606313B2 (en) * 2004-01-15 2009-10-20 Ittiam Systems (P) Ltd. System, method, and apparatus for error concealment in coded video signals

Also Published As

Publication number Publication date
US20080225946A1 (en) 2008-09-18
JP4535509B2 (ja) 2010-09-01
WO2005094086A1 (en) 2005-10-06
JP2007525908A (ja) 2007-09-06
CN1922889A (zh) 2007-02-28
CN1922889B (zh) 2011-07-20
EP1719347A1 (en) 2006-11-08

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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 AS 6A, 7A E 8A ANUIDADES.

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 2158 DE 15/05/2012.

B15K Others concerning applications: alteration of classification

Ipc: H04N 19/895 (2014.01), H04N 19/142 (2014.01), H04N