BR112022001411A2 - Codificador, decodificador e métodos correspondentes de derivação de modo intra de croma - Google Patents

Codificador, decodificador e métodos correspondentes de derivação de modo intra de croma

Info

Publication number
BR112022001411A2
BR112022001411A2 BR112022001411A BR112022001411A BR112022001411A2 BR 112022001411 A2 BR112022001411 A2 BR 112022001411A2 BR 112022001411 A BR112022001411 A BR 112022001411A BR 112022001411 A BR112022001411 A BR 112022001411A BR 112022001411 A2 BR112022001411 A2 BR 112022001411A2
Authority
BR
Brazil
Prior art keywords
intra
prediction mode
decoder
encoder
mode value
Prior art date
Application number
BR112022001411A
Other languages
English (en)
Inventor
Meher Kotra Anand
Biao Wang
Alexandrovna Alshina Elena
Han Gao
Semih Esenlik
Original Assignee
Huawei Tech Co Ltd
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 Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of BR112022001411A2 publication Critical patent/BR112022001411A2/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
    • H04N19/10—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
    • H04N19/132—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
    • 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
    • H04N19/186—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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • 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

Landscapes

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

Abstract

codificador, decodificador e métodos correspondentes de derivação de modo intra de croma. um método de codificação implementado por um dispositivo de decodificação, que compreende obter um fluxo de bits de vídeo; decodificar o fluxo de bits de vídeo para obter um valor de modo de predição intra inicial para componente de croma de um bloco de codificação atual; determinar se uma razão entre uma largura para componente de luma do bloco de codificação atual e uma largura para componente de croma do bloco de codificação atual é igual ou não a um limiar; obter um valor de modo de predição intra mapeado para componente de croma do bloco de codificação atual de acordo com uma relação de mapeamento predefinida e com o valor de modo de predição intra inicial, quando for determinado que a razão é igual ao limiar; obter um valor de amostra de predição para componente de croma do bloco de codificação atual de acordo com o valor de modo de predição intra mapeado.
BR112022001411A 2019-08-01 2020-07-20 Codificador, decodificador e métodos correspondentes de derivação de modo intra de croma BR112022001411A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP2019070804 2019-08-01
PCT/CN2020/103055 WO2021017923A1 (en) 2019-08-01 2020-07-20 An encoder, a decoder and corresponding methods of chroma intra mode derivation

Publications (1)

Publication Number Publication Date
BR112022001411A2 true BR112022001411A2 (pt) 2022-03-22

Family

ID=74230185

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022001411A BR112022001411A2 (pt) 2019-08-01 2020-07-20 Codificador, decodificador e métodos correspondentes de derivação de modo intra de croma

Country Status (12)

Country Link
US (1) US20220159263A1 (pt)
EP (1) EP3991409A4 (pt)
JP (2) JP7384998B2 (pt)
KR (1) KR20220032625A (pt)
CN (5) CN117528078A (pt)
AU (1) AU2020322553A1 (pt)
BR (1) BR112022001411A2 (pt)
CA (1) CA3145479A1 (pt)
CL (1) CL2022000251A1 (pt)
IL (1) IL290049A (pt)
MX (1) MX2022001306A (pt)
WO (1) WO2021017923A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114208167A (zh) * 2019-08-06 2022-03-18 寰发股份有限公司 具有帧内预测模式映射的视频数据的编码或解码方法和装置
CN113489974B (zh) * 2021-07-02 2023-05-16 浙江大华技术股份有限公司 帧内预测方法、视频/图像编解码方法及相关装置

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9654785B2 (en) * 2011-06-09 2017-05-16 Qualcomm Incorporated Enhanced intra-prediction mode signaling for video coding using neighboring mode
JP5614381B2 (ja) 2011-06-23 2014-10-29 株式会社Ｊｖｃケンウッド 画像符号化装置、画像符号化方法、及び画像符号化プログラム、並びに、送信装置、送信方法、及び送信プログラム
KR20130049526A (ko) * 2011-11-04 2013-05-14 오수미 복원 블록 생성 방법
WO2013102293A1 (en) * 2012-01-04 2013-07-11 Mediatek Singapore Pte. Ltd. Improvements of luma-based chroma intra prediction
US20140198855A1 (en) * 2013-01-14 2014-07-17 Qualcomm Incorporated Square block prediction
CN105934948B (zh) * 2013-12-13 2019-04-02 高通股份有限公司 解码和编码视频数据的方法和装置及计算机可读存储介质
WO2017034331A1 (ko) 2015-08-27 2017-03-02 엘지전자 주식회사 영상 코딩 시스템에서 크로마 샘플 인트라 예측 방법 및 장치
WO2017139937A1 (en) * 2016-02-18 2017-08-24 Mediatek Singapore Pte. Ltd. Advanced linear model prediction for chroma coding
US10750172B2 (en) * 2016-04-22 2020-08-18 Vid Scale, Inc. Prediction systems and methods for video coding based on filtering nearest neighboring pixels
US10917660B2 (en) * 2017-01-13 2021-02-09 Vid Scale, Inc. Prediction approaches for intra planar coding
US10531085B2 (en) 2017-05-09 2020-01-07 Futurewei Technologies, Inc. Coding chroma samples in video compression
CN109922348B (zh) * 2017-12-13 2020-09-18 华为技术有限公司 图像编解码方法和装置
KR20200033195A (ko) * 2018-09-19 2020-03-27 한국전자통신연구원 영상 부호화/복호화 방법, 장치 및 비트스트림을 저장한 기록 매체
MX2021012472A (es) * 2019-04-18 2021-11-12 Beijing Bytedance Network Tech Co Ltd Restriccion de la aplicabilidad del modo de componentes cruzados.
EP3989548A4 (en) * 2019-06-19 2022-09-21 Electronics and Telecommunications Research Institute INTRAPREDICTION MODE AND ENTROPIE CODING/DECODING METHOD AND APPARATUS

Also Published As

Publication number Publication date
WO2021017923A1 (en) 2021-02-04
JP7384998B2 (ja) 2023-11-21
CN117528078A (zh) 2024-02-06
CA3145479A1 (en) 2021-02-04
EP3991409A4 (en) 2022-08-17
MX2022001306A (es) 2022-03-02
JP2022542454A (ja) 2022-10-03
CN117896521A (zh) 2024-04-16
CN117896519A (zh) 2024-04-16
IL290049A (en) 2022-03-01
CN117896520A (zh) 2024-04-16
CN113348665B (zh) 2024-01-02
KR20220032625A (ko) 2022-03-15
JP2024012544A (ja) 2024-01-30
CN113348665A (zh) 2021-09-03
CL2022000251A1 (es) 2022-09-20
EP3991409A1 (en) 2022-05-04
US20220159263A1 (en) 2022-05-19
AU2020322553A1 (en) 2022-02-24

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