BR112012026015A2 - método de previsão espacial, método de decodificação de imagem, e método de codificação de imagem - Google Patents

método de previsão espacial, método de decodificação de imagem, e método de codificação de imagem

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Publication number
BR112012026015A2
BR112012026015A2 BR112012026015A BR112012026015A BR112012026015A2 BR 112012026015 A2 BR112012026015 A2 BR 112012026015A2 BR 112012026015 A BR112012026015 A BR 112012026015A BR 112012026015 A BR112012026015 A BR 112012026015A BR 112012026015 A2 BR112012026015 A2 BR 112012026015A2
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BR
Brazil
Prior art keywords
block
image
adjacent
current block
spatial prediction
Prior art date
Application number
BR112012026015A
Other languages
English (en)
Other versions
BR112012026015B1 (pt
Inventor
Hisao Sasai
Kyoko Tanikawa
Takahiro Nishi
Virginie Drugeon
Youji Shibahara
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Publication of BR112012026015A2 publication Critical patent/BR112012026015A2/pt
Publication of BR112012026015B1 publication Critical patent/BR112012026015B1/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
    • H04N19/50—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
    • H04N19/10—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
    • H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
    • 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
    • H04N19/136—Incoming video signal characteristics or properties
    • 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
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence 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
    • H04N19/10—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
    • H04N19/42—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
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • 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

Landscapes

  • 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 previsão espacial, método de decodificação de imagem, e método de codificação de imagem. a presente invenção refere-se a um método de previsão espacial capaz de reduzir a complexidade da previsão espacial que inclui: detectar uma borda (e) que sobrepõe o bloco atual obtendo-se um gradiente horizonte (gy) e um gradiente vertical (gx) entre o pixels dentro de um bloco adjacente ao bloco atual (s10); calcular uma inclinação inteira da borda (s11); determinar, para cada posição de pixel dentro do bloco atual, sendo que uma posição de sub-pel (450) é uma interseção entre (i) uma linha que tem a inclinação inteira e passa através da posição de pixel (440) e (ii) um limite do bloco adjacente (s12); e prever, para cada posição de pixel , um valor de pixel com base em um valor de pixel interpolado na posição de sub-pel (s13), em que o limite do bloco adjacente é uma fileira ou uma coluna que estiver mais próxima ao bloco atual, dentre as fileiras ou colunas de pixels incluídas no bloco adjacente.
BR112012026015-4A 2010-04-12 2011-04-11 Método de previsão espacial, método de decodificação de imagem, e método de codificação de imagem BR112012026015B1 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP10003876A EP2375751A1 (en) 2010-04-12 2010-04-12 Complexity reduction of edge-detection based spatial interpolation
EP10003876.9 2010-04-12
PCT/JP2011/002113 WO2011129084A1 (ja) 2010-04-12 2011-04-11 空間予測方法、画像復号方法、および画像符号化方法

Publications (2)

Publication Number Publication Date
BR112012026015A2 true BR112012026015A2 (pt) 2016-06-28
BR112012026015B1 BR112012026015B1 (pt) 2021-11-30

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Application Number Title Priority Date Filing Date
BR112012026015-4A BR112012026015B1 (pt) 2010-04-12 2011-04-11 Método de previsão espacial, método de decodificação de imagem, e método de codificação de imagem

Country Status (14)

Country Link
US (5) US8824817B2 (pt)
EP (3) EP2375751A1 (pt)
JP (3) JP5798550B2 (pt)
KR (1) KR101780084B1 (pt)
CN (3) CN105338356B (pt)
AU (1) AU2011241708B8 (pt)
BR (1) BR112012026015B1 (pt)
CA (1) CA2794351C (pt)
MX (1) MX2012011165A (pt)
MY (1) MY156119A (pt)
RU (1) RU2571550C2 (pt)
SG (1) SG184518A1 (pt)
WO (1) WO2011129084A1 (pt)
ZA (1) ZA201206591B (pt)

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Also Published As

Publication number Publication date
AU2011241708A2 (en) 2012-11-01
US20160057451A1 (en) 2016-02-25
ZA201206591B (en) 2014-05-28
JP6195179B2 (ja) 2017-09-13
AU2011241708A1 (en) 2012-11-01
AU2011241708B8 (en) 2015-10-08
KR101780084B1 (ko) 2017-09-19
SG184518A1 (en) 2012-11-29
EP2375751A1 (en) 2011-10-12
CA2794351C (en) 2018-01-23
CN102835112A (zh) 2012-12-19
MY156119A (en) 2016-01-15
AU2011241708B2 (en) 2015-09-24
US9961367B2 (en) 2018-05-01
US9602837B2 (en) 2017-03-21
RU2012143157A (ru) 2014-06-27
CN105338356A (zh) 2016-02-17
MX2012011165A (es) 2012-11-06
CN102835112B (zh) 2016-01-20
BR112012026015B1 (pt) 2021-11-30
US20170150177A1 (en) 2017-05-25
EP2560388A4 (en) 2014-05-28
RU2571550C2 (ru) 2015-12-20
CN105430402B (zh) 2018-08-03
KR20130050288A (ko) 2013-05-15
US20130028530A1 (en) 2013-01-31
CA2794351A1 (en) 2011-10-20
JP6025108B2 (ja) 2016-11-16
JP5798550B2 (ja) 2015-10-21
CN105430402A (zh) 2016-03-23
EP3217664A1 (en) 2017-09-13
US10567797B2 (en) 2020-02-18
US8824817B2 (en) 2014-09-02
US20140334544A1 (en) 2014-11-13
JPWO2011129084A1 (ja) 2013-07-11
EP2560388A1 (en) 2013-02-20
JP2015213377A (ja) 2015-11-26
CN105338356B (zh) 2018-08-03
WO2011129084A1 (ja) 2011-10-20
US9215465B2 (en) 2015-12-15
JP2017055409A (ja) 2017-03-16
CN102835112B8 (zh) 2018-03-06
US20180220155A1 (en) 2018-08-02
EP3217664B1 (en) 2020-06-03

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