BR0214328A - Métodos de decodificação de um bloco de imagem e de compressão de dados de vìdeo, e, decodificador de vìdeo para decodificar um bloco de imagem - Google Patents

Métodos de decodificação de um bloco de imagem e de compressão de dados de vìdeo, e, decodificador de vìdeo para decodificar um bloco de imagem

Info

Publication number
BR0214328A
BR0214328A BR0214328-3A BR0214328A BR0214328A BR 0214328 A BR0214328 A BR 0214328A BR 0214328 A BR0214328 A BR 0214328A BR 0214328 A BR0214328 A BR 0214328A
Authority
BR
Brazil
Prior art keywords
slice
video data
image block
frame
gmc
Prior art date
Application number
BR0214328-3A
Other languages
English (en)
Other versions
BRPI0214328B1 (pt
Inventor
Rickard Sj Berg
Torbj Rn Einarsson
Per Fr Jdh
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR0214328A publication Critical patent/BR0214328A/pt
Publication of BRPI0214328B1 publication Critical patent/BRPI0214328B1/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
    • H04N19/169—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
    • H04N19/50—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
    • H04N19/527—Global motion vector estimation
    • 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
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Studio Devices (AREA)
  • Picture Signal Circuits (AREA)
  • Television Systems (AREA)

Abstract

"MéTODOS DE DECODIFICAçãO DE UM BLOCO DE IMAGEM E DE COMPRESSãO DE DADOS DE VìDEO, E, DECODIFICADOR DE VìDEO PARA DECODIFICAR UM BLOCO DE IMAGEM". Um sistema e um método para codificar e decodificar dados de vídeo são inventados. Em um sistema e um método de compressão de dados de vídeo, um quadro de vídeo (32) é dividido em uma sequência de blocos de imagem (38), em que um dentre vários modos possíveis de codificação de bloco é um modo de compensação de movimento global implícita (IGMC), que é usado para copiar pixéis de um quadro anterior (32) deslocado por um vetor de movimento previsto. Em uma outra concretização da invenção, um sistema e um método de compressão de dados de vídeo, um quadro de vídeo (32) é segmentado em uma sequência de fatias (36), onde cada fatia (36) inclui uma série de macroblocos (38). Fatias (36) respectivas são codificadas e um sinal é incluido no cabeçalho (44) de uma fatia codificada (40) para indicar se a fatia é habilitada por GMC, ou seja, se a compensação de movimento global deve ser usada na reconstrução da fatia codificada. Se assim for, a informação de GMC tal como informação representando um conjunto de vetores de movimento (42a-42d) é incluída com a fatia. Em uma concretização útil, cada fatia (36) de um quadro (32) contém a mesma informação de GMVC, para aumentar a flexibilidade contra erros. Em uma outra concretização diferentes fatias (36) de um quadro (32) contêm informação de GMC diferente. Em cada concretização, os vetores de movimento (42a-42d) para cada imagem de uma fatia (40) codificada específica podem ser reconstruídos usando informação de GMC contida apenas na fatia codificada específica.
BRPI0214328A 2001-11-30 2002-11-29 método para a descompressão de dados de vídeo, e, decodificador de vídeo para decodificar quadros de vídeo BRPI0214328B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US33497901P 2001-11-30 2001-11-30
US10/306,349 US20030123738A1 (en) 2001-11-30 2002-11-27 Global motion compensation for video pictures
PCT/SE2002/002206 WO2003047268A2 (en) 2001-11-30 2002-11-29 Global motion compensation for video pictures

Publications (2)

Publication Number Publication Date
BR0214328A true BR0214328A (pt) 2004-11-03
BRPI0214328B1 BRPI0214328B1 (pt) 2016-05-17

Family

ID=26975113

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0214328A BRPI0214328B1 (pt) 2001-11-30 2002-11-29 método para a descompressão de dados de vídeo, e, decodificador de vídeo para decodificar quadros de vídeo

Country Status (16)

Country Link
US (1) US20030123738A1 (pt)
EP (2) EP1449383B1 (pt)
JP (1) JP4440640B2 (pt)
KR (1) KR100984612B1 (pt)
CN (1) CN100380973C (pt)
AT (1) ATE472899T1 (pt)
AU (1) AU2002353749B2 (pt)
BR (1) BRPI0214328B1 (pt)
CA (1) CA2467496C (pt)
CY (1) CY1110811T1 (pt)
DE (1) DE60236886D1 (pt)
DK (1) DK1449383T3 (pt)
PT (1) PT1449383E (pt)
RU (1) RU2307478C2 (pt)
WO (1) WO2003047268A2 (pt)
ZA (1) ZA200403131B (pt)

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Also Published As

Publication number Publication date
KR20040062660A (ko) 2004-07-07
RU2307478C2 (ru) 2007-09-27
EP1449383B1 (en) 2010-06-30
JP4440640B2 (ja) 2010-03-24
BRPI0214328B1 (pt) 2016-05-17
PT1449383E (pt) 2010-07-15
EP2202981A1 (en) 2010-06-30
WO2003047268A2 (en) 2003-06-05
RU2004119839A (ru) 2005-03-27
AU2002353749A1 (en) 2003-06-10
ATE472899T1 (de) 2010-07-15
CN1633812A (zh) 2005-06-29
DE60236886D1 (de) 2010-08-12
CA2467496C (en) 2013-10-01
DK1449383T3 (da) 2010-09-27
CY1110811T1 (el) 2015-06-10
ZA200403131B (en) 2005-06-29
EP1449383A2 (en) 2004-08-25
KR100984612B1 (ko) 2010-09-30
CA2467496A1 (en) 2003-06-05
WO2003047268A3 (en) 2003-10-09
JP2005510983A (ja) 2005-04-21
US20030123738A1 (en) 2003-07-03
CN100380973C (zh) 2008-04-09
AU2002353749B2 (en) 2007-11-08

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Ipc: H04N 19/174 (2014.01), H04N 19/527 (2014.01), H04N

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