BRPI0406507A8 - Método de codificação de imagem e método de decodificação de imagem - Google Patents

Método de codificação de imagem e método de decodificação de imagem

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Publication number
BRPI0406507A8
BRPI0406507A8 BRPI0406507A BRPI0406507A BRPI0406507A8 BR PI0406507 A8 BRPI0406507 A8 BR PI0406507A8 BR PI0406507 A BRPI0406507 A BR PI0406507A BR PI0406507 A BRPI0406507 A BR PI0406507A BR PI0406507 A8 BRPI0406507 A8 BR PI0406507A8
Authority
BR
Brazil
Prior art keywords
block
size
image
encoding
transformation
Prior art date
Application number
BRPI0406507A
Other languages
English (en)
Inventor
Lu Jiuhuai
Kashiwagi Yoshiichiro
Kozuka Masayuki
Kadono Shinya
Original Assignee
Matsushita Electric Ind Co Ltd
Panasonic Corp
Panasonic Ip Corp America
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 Matsushita Electric Ind Co Ltd, Panasonic Corp, Panasonic Ip Corp America filed Critical Matsushita Electric Ind Co Ltd
Publication of BRPI0406507A publication Critical patent/BRPI0406507A/pt
Publication of BRPI0406507A8 publication Critical patent/BRPI0406507A8/pt
Publication of BRPI0406507B1 publication Critical patent/BRPI0406507B1/pt

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    • 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
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    • 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
    • H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
    • H—ELECTRICITY
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    • 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
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    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
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    • 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
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    • 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
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    • 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
    • H04N19/177—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 group of pictures [GOP]
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    • H04N19/186—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 colour or a chrominance component
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    • 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
    • H04N19/192—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 the adaptation method, adaptation tool or adaptation type being iterative or recursive
    • H04N19/194—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 the adaptation method, adaptation tool or adaptation type being iterative or recursive involving only two passes
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    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

MÉTODO DE CODIFICAÇÃO DE IMAGEM E MÉTODO DE DECODIFICAÇÃO DE IMAGEM. O método de codificação de imagem da presente invenção é um método de codificação de imagem para a codificação de uma imagem em uma base bloco por bloco, que compreende: uma etapa de seleção de seleção de um de pelo menos dois tamanhos como um tamanho de um bloco no qual uma transformação ortogonal deve ser realizada; uma etapa de transformação de realização de uma transformação ortogonal em um bloco que tem o tamanho selecionado; uma etapa de codificação de codificação de dados do referido bloco obtido na etapa de transformação; e uma etapa de geração de geração de um fluxo codificado que inclui os dados codificados do bloco e a informação de tamanho concernente ao tamanho selecionado na etapa de seleção, onde a informação de tamanho indica se o tamanho é ou não um tamanho de bloco fixo em uma seção predeterminada no fluxo codificado, e a seção predeterminada é uma dentre uma seqüência, um grupo de imagens, uma imagem, uma fatia e um macrobloco.
BRPI0406507A 2003-02-21 2004-02-18 método de codificação de imagem e método de decodificação de imagem BRPI0406507B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44913503P 2003-02-21 2003-02-21
PCT/US2004/004829 WO2004077810A2 (en) 2003-02-21 2004-02-18 Picture coding method and picture decoding method

Publications (3)

Publication Number Publication Date
BRPI0406507A BRPI0406507A (pt) 2005-12-06
BRPI0406507A8 true BRPI0406507A8 (pt) 2016-07-12
BRPI0406507B1 BRPI0406507B1 (pt) 2018-10-16

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BRPI0406507A BRPI0406507B1 (pt) 2003-02-21 2004-02-18 método de codificação de imagem e método de decodificação de imagem

Country Status (10)

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US (3) US8081678B2 (pt)
EP (1) EP1597909A4 (pt)
JP (1) JP4348209B2 (pt)
KR (2) KR100999221B1 (pt)
CN (2) CN101247524B (pt)
AU (1) AU2004214795B9 (pt)
BR (1) BRPI0406507B1 (pt)
CA (1) CA2513537C (pt)
MX (1) MXPA05006718A (pt)
WO (1) WO2004077810A2 (pt)

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US20120039390A1 (en) 2012-02-16
US9071817B2 (en) 2015-06-30
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CA2513537C (en) 2013-03-26
AU2004214795B2 (en) 2009-01-08
US8630342B2 (en) 2014-01-14
BRPI0406507B1 (pt) 2018-10-16
CN1751511A (zh) 2006-03-22
KR20100083853A (ko) 2010-07-22
WO2004077810A3 (en) 2004-11-04
WO2004077810A2 (en) 2004-09-10
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US20140126632A1 (en) 2014-05-08
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AU2004214795A9 (en) 2009-05-28
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US20060159165A1 (en) 2006-07-20
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