BR0317962A - Aparelho decodificador e método para suavizar artefatos criados durante ocultação de erro - Google Patents

Aparelho decodificador e método para suavizar artefatos criados durante ocultação de erro

Info

Publication number
BR0317962A
BR0317962A BR0317962-1A BR0317962A BR0317962A BR 0317962 A BR0317962 A BR 0317962A BR 0317962 A BR0317962 A BR 0317962A BR 0317962 A BR0317962 A BR 0317962A
Authority
BR
Brazil
Prior art keywords
decoder
error
created during
stage
hiding
Prior art date
Application number
BR0317962-1A
Other languages
English (en)
Inventor
Cristina Gomila
Original Assignee
Thomson Licensing Sa
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 Sa filed Critical Thomson Licensing Sa
Publication of BR0317962A publication Critical patent/BR0317962A/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
    • H04N19/10—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
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • 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
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame 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
    • H04N19/10—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
    • H04N19/164—Feedback from the receiver or from the transmission channel
    • H04N19/166—Feedback from the receiver or from the transmission channel concerning the amount of transmission errors, e.g. bit error rate [BER]
    • 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
    • H04N19/176—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 block, e.g. a macroblock
    • 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
    • H04N19/182—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 pixel
    • 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
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)

Abstract

"APARELHO DECODIFICADOR E MéTODO PARA SUAVIZAR ARTEFATOS CRIADOS DURANTE A OCULTAçãO DE ERRO". Erros em macroblocos codificados são ocultados durante a decodificação por meio de um estágio de ocultação de erros (20) presente em um decodificador (10). Os macroblocos com erros ocultados produzidos pelo estágio de ocultação de erro sofrem a filtragem de desbloqueio por um filtro de desbloqueio (22) antes de serem enviados pelo decodificador para evitar o espalhamento de valores de pixel errados. O estágio de ocultação de erro (20) controla o filtro de desbloqueio (22) de acordo com a técnica de ocultação de erro para variar a intensidade do filtro de desbloqueio para forçar a máxima intensidade nas transições criadas artificialmente pela recuperação de macroblocos perdidos.
BR0317962-1A 2003-01-10 2003-07-09 Aparelho decodificador e método para suavizar artefatos criados durante ocultação de erro BR0317962A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US43931203P 2003-01-10 2003-01-10
PCT/US2003/021329 WO2004064396A1 (en) 2003-01-10 2003-07-09 Decoder apparatus and method for smoothing artifacts created during error concealment

Publications (1)

Publication Number Publication Date
BR0317962A true BR0317962A (pt) 2005-11-29

Family

ID=32713462

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0317962-1A BR0317962A (pt) 2003-01-10 2003-07-09 Aparelho decodificador e método para suavizar artefatos criados durante ocultação de erro

Country Status (9)

Country Link
US (1) US20060051068A1 (pt)
EP (1) EP1582061A4 (pt)
JP (1) JP2006513633A (pt)
KR (1) KR100970089B1 (pt)
CN (1) CN100446560C (pt)
AU (1) AU2003248858A1 (pt)
BR (1) BR0317962A (pt)
MX (1) MXPA05007447A (pt)
WO (1) WO2004064396A1 (pt)

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Also Published As

Publication number Publication date
US20060051068A1 (en) 2006-03-09
KR20050098242A (ko) 2005-10-11
JP2006513633A (ja) 2006-04-20
CN1720729A (zh) 2006-01-11
KR100970089B1 (ko) 2010-07-16
MXPA05007447A (es) 2005-09-12
AU2003248858A1 (en) 2004-08-10
WO2004064396A1 (en) 2004-07-29
EP1582061A1 (en) 2005-10-05
EP1582061A4 (en) 2010-09-22
CN100446560C (zh) 2008-12-24

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