BR112021020758A2 - Codificação de imagem usando índice de transformada - Google Patents

Codificação de imagem usando índice de transformada

Info

Publication number
BR112021020758A2
BR112021020758A2 BR112021020758A BR112021020758A BR112021020758A2 BR 112021020758 A2 BR112021020758 A2 BR 112021020758A2 BR 112021020758 A BR112021020758 A BR 112021020758A BR 112021020758 A BR112021020758 A BR 112021020758A BR 112021020758 A2 BR112021020758 A2 BR 112021020758A2
Authority
BR
Brazil
Prior art keywords
information
image encoding
transform
residual
current block
Prior art date
Application number
BR112021020758A
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 BR112021020758A2 publication Critical patent/BR112021020758A2/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
    • H04N19/10—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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform 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
    • H04N19/60—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
    • H04N19/103—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
    • H04N19/102—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
    • H04N19/132—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
    • H04N19/50—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
    • H04N19/70—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
    • H04N19/91—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
    • H04N19/12—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

Landscapes

  • 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)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

codificação de imagem usando índice de transformada. um método de codificação de imagem de acordo com o presente documento compreende as etapas de: receber informações de imagem, incluindo informações residuais para um bloco atual; e gerar amostras residuais do bloco atual com base nas informações residuais, em que as informações residuais incluem informações sobre coeficientes de transformada do bloco atual, e as amostras residuais são geradas a partir das informações sobre os coeficientes de transformada com base nas informações de índice de transformada não-separável de baixa frequência (lfnst).
BR112021020758A 2019-04-16 2020-04-16 Codificação de imagem usando índice de transformada BR112021020758A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962834950P 2019-04-16 2019-04-16
PCT/KR2020/005079 WO2020213946A1 (ko) 2019-04-16 2020-04-16 변환 인덱스를 이용하는 영상 코딩

Publications (1)

Publication Number Publication Date
BR112021020758A2 true BR112021020758A2 (pt) 2021-12-14

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BR112021020758A BR112021020758A2 (pt) 2019-04-16 2020-04-16 Codificação de imagem usando índice de transformada

Country Status (8)

Country Link
US (2) US11831918B2 (pt)
EP (1) EP3955578A4 (pt)
JP (3) JP7197728B2 (pt)
KR (2) KR102436368B1 (pt)
CN (5) CN118118665A (pt)
BR (1) BR112021020758A2 (pt)
MX (1) MX2021012732A (pt)
WO (1) WO2020213946A1 (pt)

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MX2021012405A (es) * 2019-04-17 2021-11-12 Huawei Tech Co Ltd Un codificador, un decodificador y metodos de armonizacion de intraprediccion basada en matriz correspondiente y seleccion de nucleo de transformada secundaria.
US20220345690A1 (en) * 2021-04-16 2022-10-27 Tencent America LLC Harmonized Design Among Multiple Reference Line Intra Prediction, Transform Partitioning and Transform Kernels
US11943565B2 (en) * 2021-07-12 2024-03-26 Milestone Systems A/S Computer implemented method and apparatus for operating a video management system
WO2023068840A1 (ko) * 2021-10-22 2023-04-27 엘지전자 주식회사 비분리 1차 변환 설계 방법 및 장치
WO2023075353A1 (ko) * 2021-10-25 2023-05-04 엘지전자 주식회사 비분리 1차 변환 설계 방법 및 장치
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WO2024080784A1 (ko) * 2022-10-12 2024-04-18 엘지전자 주식회사 비분리 1차 변환에 기반한 영상 부호화/복호화 방법, 장치 및 비트스트림을 저장하는 기록 매체

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Also Published As

Publication number Publication date
CN113853797B (zh) 2024-03-22
CN118118663A (zh) 2024-05-31
EP3955578A4 (en) 2022-06-29
KR102436368B1 (ko) 2022-08-25
JP2022529688A (ja) 2022-06-23
KR20210129226A (ko) 2021-10-27
JP2023175022A (ja) 2023-12-08
CN118118662A (zh) 2024-05-31
US20240048766A1 (en) 2024-02-08
EP3955578A1 (en) 2022-02-16
JP7375152B2 (ja) 2023-11-07
CN113853797A (zh) 2021-12-28
JP2023021354A (ja) 2023-02-10
KR20220122783A (ko) 2022-09-02
CN118118664A (zh) 2024-05-31
US20220046281A1 (en) 2022-02-10
MX2021012732A (es) 2022-01-06
JP7197728B2 (ja) 2022-12-27
CN118118665A (zh) 2024-05-31
WO2020213946A1 (ko) 2020-10-22
US11831918B2 (en) 2023-11-28

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