BR112021020764A2 - Transformada para intrapredição baseada em matriz na codificação de imagens - Google Patents

Transformada para intrapredição baseada em matriz na codificação de imagens

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Publication number
BR112021020764A2
BR112021020764A2 BR112021020764A BR112021020764A BR112021020764A2 BR 112021020764 A2 BR112021020764 A2 BR 112021020764A2 BR 112021020764 A BR112021020764 A BR 112021020764A BR 112021020764 A BR112021020764 A BR 112021020764A BR 112021020764 A2 BR112021020764 A2 BR 112021020764A2
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BR
Brazil
Prior art keywords
transform
matrix
current block
image coding
transform coefficients
Prior art date
Application number
BR112021020764A
Other languages
English (en)
Inventor
Jaehyun Lim
Junghak Nam
Moonmo Koo
Seunghwan Kim
Original Assignee
Lg Electronics Inc
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 Lg Electronics Inc filed Critical Lg Electronics Inc
Publication of BR112021020764A2 publication Critical patent/BR112021020764A2/pt

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    • 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
    • H04N19/60—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
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • 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
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame 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
    • H04N19/102—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
    • 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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • H04N19/70—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
    • H04N19/90—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
    • H04N19/96—Tree coding, e.g. quad-tree coding

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

transformada para intrapredição baseada em matriz na codificação de imagens. um método de codificação de imagem de acordo com o presente documento compreende as etapas de: derivar coeficientes de transformada para um bloco atual com base em informações relacionadas residuais; e gerar amostras residuais do bloco atual com base nos coeficientes de transformada. as informações relacionadas residuais compreendem informações de índice de transformada não-separável de baixa frequência (lfnst), mostrando informações relacionadas à transformada não-separável para coeficientes de transformada de baixa frequência do bloco atual, com base em um indicador de intrapredição baseado em matriz (mip) mostrando se a mip é ou não aplicada ao bloco atual. as amostras residuais são geradas a partir dos coeficientes de transformada com base nas informações do índice lfnst.
BR112021020764A 2019-04-16 2020-04-16 Transformada para intrapredição baseada em matriz na codificação de imagens BR112021020764A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962834946P 2019-04-16 2019-04-16
PCT/KR2020/005076 WO2020213944A1 (ko) 2019-04-16 2020-04-16 영상 코딩에서 매트릭스 기반의 인트라 예측을 위한 변환

Publications (1)

Publication Number Publication Date
BR112021020764A2 true BR112021020764A2 (pt) 2021-12-14

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BR112021020764A BR112021020764A2 (pt) 2019-04-16 2020-04-16 Transformada para intrapredição baseada em matriz na codificação de imagens

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US (2) US11558641B2 (pt)
EP (2) EP4287620A3 (pt)
JP (3) JP7197727B2 (pt)
KR (2) KR20220162847A (pt)
CN (5) CN116684614A (pt)
AU (2) AU2020257796B2 (pt)
BR (1) BR112021020764A2 (pt)
CA (1) CA3137181A1 (pt)
ES (1) ES2969115T3 (pt)
FI (1) FI3944618T3 (pt)
HR (1) HRP20231634T1 (pt)
HU (1) HUE064847T2 (pt)
MX (1) MX2021012730A (pt)
PL (1) PL3944618T3 (pt)
SI (1) SI3944618T1 (pt)
WO (1) WO2020213944A1 (pt)

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WO2021023152A1 (en) 2019-08-03 2021-02-11 Beijing Bytedance Network Technology Co., Ltd. Selection of matrices for reduced secondary transform in video coding
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WO2024007120A1 (zh) * 2022-07-04 2024-01-11 Oppo广东移动通信有限公司 编解码方法、编码器、解码器以及存储介质

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US20220038741A1 (en) 2022-02-03
ES2969115T3 (es) 2024-05-16
EP4287620A3 (en) 2024-02-14
EP3944618A4 (en) 2022-05-11
JP7375151B2 (ja) 2023-11-07
EP3944618A1 (en) 2022-01-26
HUE064847T2 (hu) 2024-04-28
CN116684613A (zh) 2023-09-01
JP2022529686A (ja) 2022-06-23
EP3944618B1 (en) 2023-12-06
JP7197727B2 (ja) 2022-12-27
WO2020213944A1 (ko) 2020-10-22
AU2024200619A1 (en) 2024-02-22
CN116684611A (zh) 2023-09-01
PL3944618T3 (pl) 2024-03-11
EP4287620A2 (en) 2023-12-06
AU2020257796A1 (en) 2021-12-16
CA3137181A1 (en) 2020-10-22
JP2023175021A (ja) 2023-12-08
AU2020257796B2 (en) 2023-11-02
KR102470696B1 (ko) 2022-11-28
US20230047743A1 (en) 2023-02-16
SI3944618T1 (sl) 2024-04-30
JP2023025271A (ja) 2023-02-21
CN113826395B (zh) 2023-06-30
US11831912B2 (en) 2023-11-28
FI3944618T3 (fi) 2024-01-11
HRP20231634T1 (hr) 2024-03-15
KR20210130816A (ko) 2021-11-01
KR20220162847A (ko) 2022-12-08
CN116684612A (zh) 2023-09-01
CN116684614A (zh) 2023-09-01
US11558641B2 (en) 2023-01-17
CN113826395A (zh) 2021-12-21
MX2021012730A (es) 2022-01-06

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