BR0305519A - Ponderação adapatativa de imagens de referência na codificação de vìdeo - Google Patents

Ponderação adapatativa de imagens de referência na codificação de vìdeo

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Publication number
BR0305519A
BR0305519A BR0305519-1A BR0305519A BR0305519A BR 0305519 A BR0305519 A BR 0305519A BR 0305519 A BR0305519 A BR 0305519A BR 0305519 A BR0305519 A BR 0305519A
Authority
BR
Brazil
Prior art keywords
reference image
weighting factor
index
motion
video encoding
Prior art date
Application number
BR0305519-1A
Other languages
English (en)
Inventor
Jill Macdonald Boyce
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=30119143&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR0305519(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0305519A publication Critical patent/BR0305519A/pt

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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
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/149—Data rate or code amount at the encoder output by estimating the code amount by means of a model, e.g. mathematical model or statistical model
    • 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
    • H04N19/172—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 picture, frame or field
    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • H04N19/197—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters including determination of the initial value of an encoding parameter
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • H04N19/50—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
    • H04N19/573—Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction
    • 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Algebra (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

"PONDERAçãO ADAPTATIVA DE IMAGENS DE REFERêNCIA NA CODIFICAçãO DE VìDEO". Trata-se de um decodificador de vídeo (Figura 3, 300), codificador (500) e métodos correspondentes para processar dados de sinal de vídeo para um bloco de imagem e um índice de imagem de referência particular para predizer o bloco de imagem são descritos que utilizam a ponderação adaptativa das imagens de referência para melhorar a compactação do vídeo, onde um decodificador (300) inclui uma unidade de fator de ponderação da imagem de referência (380) para determinar um fator de ponderação correspondendo com o índice da imagem de referência particular; um codificador (500) inclui um designador do fator de ponderação da imagem de referência (572) para designar um fator de ponderação correspondendo com o índice da imagem de referência particular; e um método para decodificar inclui receber um índice da imagem de referência com os dados que correspondem com o bloco da imagem, determinar um fator de ponderação para cada índice da imagem de referência recebida, recuperar uma imagem de referência para cada índice, compensar o movimento da imagem de referência recuperada e multiplicar a imagem de referência com movimento compensado pelo fator de ponderação correspondente para formar uma imagem de referência com movimento compensado ponderada.
BR0305519-1A 2002-07-15 2003-07-14 Ponderação adapatativa de imagens de referência na codificação de vìdeo BR0305519A (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US39584302P 2002-07-15 2002-07-15
US39587402P 2002-07-15 2002-07-15
US10/410,456 US8406301B2 (en) 2002-07-15 2003-04-09 Adaptive weighting of reference pictures in video encoding
PCT/US2003/021728 WO2004008761A1 (en) 2002-07-15 2003-07-14 Adaptive weighting of reference pictures in video encoding

Publications (1)

Publication Number Publication Date
BR0305519A true BR0305519A (pt) 2004-09-28

Family

ID=30119143

Family Applications (5)

Application Number Title Priority Date Filing Date
BR0305519-1A BR0305519A (pt) 2002-07-15 2003-07-14 Ponderação adapatativa de imagens de referência na codificação de vìdeo
BRPI0318824A BRPI0318824B1 (pt) 2002-07-15 2003-07-14 método para codificação de dados de sinal de vídeo para um bloco de imagem
BRPI0318825A BRPI0318825B1 (pt) 2002-07-15 2003-07-14 método de codificação de dados de sinal de vídeo para um bloco de imagem
BRPI0318787-0A BRPI0318787B1 (pt) 2002-07-15 2003-07-14 Codificador de vídeo para codificar dados de vídeo para um bloco de imagem e método para codificar dados de sinal de vídeo para um bloco de imagem
BRPI0305519-1A BRPI0305519B1 (pt) 2002-07-05 2003-07-14 Additional weighting of reference images in video encoding

Family Applications After (4)

Application Number Title Priority Date Filing Date
BRPI0318824A BRPI0318824B1 (pt) 2002-07-15 2003-07-14 método para codificação de dados de sinal de vídeo para um bloco de imagem
BRPI0318825A BRPI0318825B1 (pt) 2002-07-15 2003-07-14 método de codificação de dados de sinal de vídeo para um bloco de imagem
BRPI0318787-0A BRPI0318787B1 (pt) 2002-07-15 2003-07-14 Codificador de vídeo para codificar dados de vídeo para um bloco de imagem e método para codificar dados de sinal de vídeo para um bloco de imagem
BRPI0305519-1A BRPI0305519B1 (pt) 2002-07-05 2003-07-14 Additional weighting of reference images in video encoding

Country Status (18)

Country Link
US (13) US8406301B2 (pt)
EP (2) EP1540952B1 (pt)
JP (7) JP4840852B2 (pt)
KR (3) KR101070530B1 (pt)
CN (4) CN101902647B (pt)
AU (5) AU2003249053B2 (pt)
BR (5) BR0305519A (pt)
CA (1) CA2491862C (pt)
DK (2) DK1540952T3 (pt)
ES (2) ES2722001T3 (pt)
HK (1) HK1218197A1 (pt)
HU (1) HUE025429T2 (pt)
MX (2) MX354997B (pt)
MY (3) MY153363A (pt)
PL (1) PL374025A1 (pt)
PT (1) PT1540952E (pt)
TW (1) TWI238661B (pt)
WO (1) WO2004008761A1 (pt)

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