BR112013022793A2 - método de codificação e decodificação de imagens, dispositivo de codificação e decodificação e programas de computador correspondentes - Google Patents

método de codificação e decodificação de imagens, dispositivo de codificação e decodificação e programas de computador correspondentes

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Publication number
BR112013022793A2
BR112013022793A2 BR112013022793A BR112013022793A BR112013022793A2 BR 112013022793 A2 BR112013022793 A2 BR 112013022793A2 BR 112013022793 A BR112013022793 A BR 112013022793A BR 112013022793 A BR112013022793 A BR 112013022793A BR 112013022793 A2 BR112013022793 A2 BR 112013022793A2
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Brazil
Prior art keywords
block
subset
encoding
blocks
current block
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BR112013022793A
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English (en)
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BR112013022793A8 (pt
BR112013022793B1 (pt
Inventor
Felix Henry
Stéphane Pateux
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Orange
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Publication of BR112013022793A8 publication Critical patent/BR112013022793A8/pt
Publication of BR112013022793B1 publication Critical patent/BR112013022793B1/pt

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    • 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
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • H04N19/169—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
    • H04N19/174—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 slice, e.g. a line of blocks or a group of blocks
    • 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
    • H04N19/184—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 bits, e.g. of the compressed video stream
    • 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
    • H04N19/20—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
    • H04N19/25—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with scene description coding, e.g. binary format for scenes [BIFS] compression
    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • H04N19/436—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation using parallelised computational arrangements
    • 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
    • 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
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

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

Abstract

método de codificação e decodificação de imagens, dispositivo de codificação e decodificação e programas de computador correspondentes a presente invenção refere-se a um método de codificação de pelo menos uma imagem, compreendendo as etapas de recorte da imagem em uma pluralidade de blocos (mb), de agrupamento desses blocos em um número pré-determinado de subconjuntos de blocos, de codificação em paralelo de cada um desses subconjuntos de blocos, os blocos de um subconjunto considerado sendo codificados segundo uma ordem de percurso sequencial pré-determinado. a etapa de codificação compreende, para um bloco corrente de um subconjunto considerado, a subetapa (c341) de codificação preditiva desse bloco corrente em relação a pelo menos um bloco anteriormente codificado e decodificado e a subetapa (c345) de codificação entrópica desse bloco corrente a partir de pelo menos uma probabilidade de aparecimento de símboo. no caso em que o bloco corrente é o primeiro bloco a ser codificado de um subconjunto considerado, essa probabilidade de aparecimento de símbolo é aqulea que foi calculada para um bloco pré-determinado codificado e decodificado de pelo menos outro subconjunto. no caso em que o bloco corrente é um bloco do dito subconjunto considerado, diferente desse primeiro bloco deste último, essa probabilidade de aparecimento de símbolo é aquela que foi calculada para pelo menos um bloco codificado e decodificado pertencente a esse mesmo subconjunto.
BR112013022793-1A 2011-03-07 2012-02-23 Método de codificação / decodificação de imagens, dispositivo de codificação / decodificação e meio não transitório legível por computador BR112013022793B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1151849A FR2972588A1 (fr) 2011-03-07 2011-03-07 Procede de codage et decodage d'images, dispositif de codage et decodage et programmes d'ordinateur correspondants
FR1151849 2011-03-07
PCT/FR2012/050380 WO2012120217A1 (fr) 2011-03-07 2012-02-23 Procédé de codage et décodage d'images, dispositif de codage et décodage et programmes d'ordinateur correspondants

Publications (3)

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BR112013022793A2 true BR112013022793A2 (pt) 2016-12-06
BR112013022793A8 BR112013022793A8 (pt) 2017-07-11
BR112013022793B1 BR112013022793B1 (pt) 2022-10-04

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US (8) US9560380B2 (pt)
EP (2) EP3716623A1 (pt)
JP (3) JP6023095B2 (pt)
KR (10) KR102161761B1 (pt)
CN (8) CN106454346B (pt)
BR (1) BR112013022793B1 (pt)
FR (1) FR2972588A1 (pt)
HK (1) HK1214050A1 (pt)
RU (4) RU2651426C1 (pt)
WO (1) WO2012120217A1 (pt)

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