BR112022002916A2 - Codificador, decodificador, método de codificação e método de decodificação - Google Patents

Codificador, decodificador, método de codificação e método de decodificação

Info

Publication number
BR112022002916A2
BR112022002916A2 BR112022002916A BR112022002916A BR112022002916A2 BR 112022002916 A2 BR112022002916 A2 BR 112022002916A2 BR 112022002916 A BR112022002916 A BR 112022002916A BR 112022002916 A BR112022002916 A BR 112022002916A BR 112022002916 A2 BR112022002916 A2 BR 112022002916A2
Authority
BR
Brazil
Prior art keywords
coefficient
encoded
encoding
block
encoder
Prior art date
Application number
BR112022002916A
Other languages
English (en)
Inventor
Kiyofumi Abe
Tadamasa Toma
Takahiro Nishi
Yusuke Kato
Original Assignee
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 Panasonic Ip Corp America filed Critical Panasonic Ip Corp America
Publication of BR112022002916A2 publication Critical patent/BR112022002916A2/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
    • H04N19/90—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
    • 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
    • H04N19/103—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
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or 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
    • H04N19/10—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
    • H04N19/18—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 set of transform coefficients
    • 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
    • H04N19/423—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 characterised by memory 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
    • H04N19/46—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
    • H04N19/70—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

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

codificador, decodificador, método de codificação e método de decodificação. a presente invenção refere-se a um codificador (100) incluindo circuito e memória acoplada ao circuito. em operação, o circuito limita um número total de processos de codificação adaptável ao contexto, e codifica um bloco em uma imagem. na codificação do bloco, quando o número total de processos está dentro de uma faixa limitada do número total de processos, um sinalizador de informação de coeficiente é codificado. o sinalizador de informação de coeficiente indica atribuição de um coeficiente incluído no bloco. na codificação do bloco, em um caso onde a transformada ortogonal não é aplicada ao bloco, quando o sinalizador de informação de coeficiente é codificado, um processo de conversão é realizado em um valor do coeficiente, e um valor convertido do coeficiente é codificado usando o sinalizador de informação de coeficiente a ser codificado pela codificação adaptável ao contexto. o processo de conversão é um processo para converter o valor do coeficiente usando um valor determinado usando coeficientes vizinhos localizados ao redor do coeficiente no bloco. quando o sinalizador de informação de coeficiente não é codificado, o processo de conversão não é realizado, e o valor do coeficiente é codificado pela codificação de golomb-rice.
BR112022002916A 2019-09-25 2020-07-03 Codificador, decodificador, método de codificação e método de decodificação BR112022002916A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962905760P 2019-09-25 2019-09-25
PCT/JP2020/026138 WO2021059652A1 (ja) 2019-09-25 2020-07-03 符号化装置、復号装置、符号化方法、および復号方法

Publications (1)

Publication Number Publication Date
BR112022002916A2 true BR112022002916A2 (pt) 2022-05-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022002916A BR112022002916A2 (pt) 2019-09-25 2020-07-03 Codificador, decodificador, método de codificação e método de decodificação

Country Status (9)

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US (2) US20220201306A1 (pt)
EP (1) EP4037317A4 (pt)
KR (1) KR20220062526A (pt)
CN (1) CN114391257A (pt)
BR (1) BR112022002916A2 (pt)
CA (1) CA3153767A1 (pt)
MX (1) MX2022001963A (pt)
TW (1) TW202114419A (pt)
WO (1) WO2021059652A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW202046729A (zh) * 2019-04-24 2020-12-16 美商松下電器（美國）知識產權公司 編碼裝置、解碼裝置、編碼方法、及解碼方法
US11956294B2 (en) * 2021-01-19 2024-04-09 Nagrastar Llc Systems and methods for analyzing streamed media to determine common source encoders
CN117354534B (zh) * 2023-12-04 2024-02-02 上海方诚光电科技有限公司 一种自适应图像无损压缩方法、设备及存储介质

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050084033A1 (en) * 2003-08-04 2005-04-21 Lowell Rosen Scalable transform wideband holographic communications apparatus and methods
JP2010135863A (ja) * 2007-03-28 2010-06-17 Toshiba Corp 画像符号化方法及び装置
JP5884761B2 (ja) * 2012-03-26 2016-03-15 株式会社Ｊｖｃケンウッド 画像符号化装置、画像符号化方法、画像符号化プログラム、送信装置、送信方法、及び送信プログラム
US9930348B2 (en) * 2014-03-14 2018-03-27 Qualcomm Incorporated Coefficient level coding in a video coding process
US10334248B2 (en) * 2015-05-29 2019-06-25 Qualcomm Incorporated Coding data using an enhanced context-adaptive binary arithmetic coding (CABAC) design
CN105872549B (zh) * 2016-05-16 2018-08-03 中国科学技术大学 基于块搜索和正交匹配追踪的视频变换编码方法
US11297346B2 (en) * 2016-05-28 2022-04-05 Microsoft Technology Licensing, Llc Motion-compensated compression of dynamic voxelized point clouds
MX2020005045A (es) * 2017-11-17 2020-08-20 Fraunhofer Ges Forschung Aparato y metodo para codificar o decodificar parametros de codificacion de audio direccional utilizando cuantificacion y codificacion entropica.
JP2019134284A (ja) * 2018-01-31 2019-08-08 Kddi株式会社 符号化装置および復号装置ならびに符号化方法および復号方法
US11202100B2 (en) * 2019-03-11 2021-12-14 Qualcomm Incorporated Coefficient coding for transform skip mode

Also Published As

Publication number Publication date
US20240187598A1 (en) 2024-06-06
CN114391257A (zh) 2022-04-22
EP4037317A4 (en) 2023-01-04
US20220201306A1 (en) 2022-06-23
MX2022001963A (es) 2022-03-11
EP4037317A1 (en) 2022-08-03
JPWO2021059652A1 (pt) 2021-04-01
CA3153767A1 (en) 2021-04-01
KR20220062526A (ko) 2022-05-17
TW202114419A (zh) 2021-04-01
WO2021059652A1 (ja) 2021-04-01

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