BR112022000623A2 - Método, aparelho e sistema para codificar e decodificar um bloco de amostras de vídeo - Google Patents

Método, aparelho e sistema para codificar e decodificar um bloco de amostras de vídeo

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Publication number
BR112022000623A2
BR112022000623A2 BR112022000623A BR112022000623A BR112022000623A2 BR 112022000623 A2 BR112022000623 A2 BR 112022000623A2 BR 112022000623 A BR112022000623 A BR 112022000623A BR 112022000623 A BR112022000623 A BR 112022000623A BR 112022000623 A2 BR112022000623 A2 BR 112022000623A2
Authority
BR
Brazil
Prior art keywords
color channel
decoding
core
encoding
index
Prior art date
Application number
BR112022000623A
Other languages
English (en)
Inventor
James Rosewarne Christopher
Iftekhar Ahmed
Original Assignee
Canon Kk
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 Canon Kk filed Critical Canon Kk
Publication of BR112022000623A2 publication Critical patent/BR112022000623A2/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
    • H04N19/90—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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/40—Tree coding, e.g. quadtree, octree
    • 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
    • H04N19/12—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
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • 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
    • H04N19/134—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
    • H04N19/169—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
    • H04N19/10—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
    • H04N19/186—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
    • 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
    • H04N19/1883—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 relating to sub-band structure, e.g. hierarchical level, directional tree, e.g. low-high [LH], high-low [HL], high-high [HH]
    • 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
    • H04N19/60—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
    • H04N19/70—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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Color Television Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

método, aparelho e sistema para codificar e decodificar um bloco de amostras de vídeo. a presente invenção refere-se a um sistema e um método para decodificar uma uni-dade de codificação de uma árvore de codificação a partir de uma unidade de árvore de codificação de um quadro de imagem a partir de um fluxo de bits de vídeo, a uni-dade de codificação tendo um canal de cor primário e pelo menos um canal de cor secundário. o método compreende determinar uma unidade de codificação incluin-do o canal de cor primário e pelo menos um canal de cor secundário de acordo com sinalizadores de divisão decodificados da unidade de árvore de codificação; decodi-ficar um primeiro índice para selecionar um núcleo para o canal de cor primário e um segundo índice para selecionar um núcleo para pelo menos um canal de cor secundário; selecionar um primeiro núcleo de acordo com o primeiro índice e um segundo núcleo de acordo com o segundo índice; e decodificar a unidade de codi-ficação aplicando o primeiro núcleo aos coeficientes residuais do canal de cor pri-mário e o segundo núcleo aos coeficientes residuais de pelo menos um canal de cor secundário.
BR112022000623A 2019-09-17 2020-08-04 Método, aparelho e sistema para codificar e decodificar um bloco de amostras de vídeo BR112022000623A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2019232801A AU2019232801A1 (en) 2019-09-17 2019-09-17 Method, apparatus and system for encoding and decoding a block of video samples
PCT/AU2020/050798 WO2021051155A1 (en) 2019-09-17 2020-08-04 Method, apparatus and system for encoding and decoding a block of video samples

Publications (1)

Publication Number Publication Date
BR112022000623A2 true BR112022000623A2 (pt) 2022-03-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022000623A BR112022000623A2 (pt) 2019-09-17 2020-08-04 Método, aparelho e sistema para codificar e decodificar um bloco de amostras de vídeo

Country Status (9)

Country Link
US (1) US20240073432A1 (pt)
EP (1) EP4032272A4 (pt)
JP (1) JP7394875B2 (pt)
KR (1) KR20220032620A (pt)
CN (1) CN114342391A (pt)
AU (2) AU2019232801A1 (pt)
BR (1) BR112022000623A2 (pt)
TW (1) TWI823023B (pt)
WO (1) WO2021051155A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023103521A1 (en) * 2021-12-09 2023-06-15 Mediatek Inc. Method and apparatus for sign coding of transform coefficients in video coding system
US20230370603A1 (en) * 2022-05-12 2023-11-16 Tencent America LLC Systems and methods for transform coefficient sign prediction and coding

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10681379B2 (en) * 2015-09-29 2020-06-09 Qualcomm Incorporated Non-separable secondary transform for video coding with reorganizing
EP3389274A4 (en) * 2016-02-04 2019-01-09 Samsung Electronics Co., Ltd. VIDEO CODING METHOD AND DEVICE THROUGH CHROMA MULTITRANSFORMATION AND VIDEO CODING METHOD AND APPARATUS THROUGH CHROMA MULTITRANSFORMATION
WO2017173593A1 (en) * 2016-04-06 2017-10-12 Mediatek Singapore Pte. Ltd. Separate coding secondary transform syntax elements for different color components
KR102476148B1 (ko) * 2016-12-28 2022-12-12 소니그룹주식회사 화상 처리 장치 및 방법
WO2019112071A1 (ko) * 2017-12-04 2019-06-13 엘지전자 주식회사 영상 코딩 시스템에서 크로마 성분의 효율적 변환에 기반한 영상 디코딩 방법 및 장치
CN111771378B (zh) * 2018-09-05 2023-02-17 Lg电子株式会社 由设备对图像信号进行编码/解码的方法及比特流发送方法

Also Published As

Publication number Publication date
KR20220032620A (ko) 2022-03-15
TW202114412A (zh) 2021-04-01
EP4032272A1 (en) 2022-07-27
JP7394875B2 (ja) 2023-12-08
CN114342391A (zh) 2022-04-12
JP2022546895A (ja) 2022-11-10
EP4032272A4 (en) 2023-08-23
TWI823023B (zh) 2023-11-21
AU2022204353A1 (en) 2022-07-14
WO2021051155A1 (en) 2021-03-25
AU2022204353B2 (en) 2024-05-09
AU2019232801A1 (en) 2021-04-01
US20240073432A1 (en) 2024-02-29

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