BR112021021434A2 - Método e aparelho para sinalização de função de mapeamento de parâmetro de quantização de croma - Google Patents

Método e aparelho para sinalização de função de mapeamento de parâmetro de quantização de croma

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Publication number
BR112021021434A2
BR112021021434A2 BR112021021434A BR112021021434A BR112021021434A2 BR 112021021434 A2 BR112021021434 A2 BR 112021021434A2 BR 112021021434 A BR112021021434 A BR 112021021434A BR 112021021434 A BR112021021434 A BR 112021021434A BR 112021021434 A2 BR112021021434 A2 BR 112021021434A2
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BR
Brazil
Prior art keywords
mapping function
quantization parameter
luminance
chroma quantization
parameter mapping
Prior art date
Application number
BR112021021434A
Other languages
English (en)
Inventor
Alexandrovich Karabutov Alexander
Alexandrovna Alshina Elena
Jianle Chen
Igorevich Chernyak Roman
Yurievich Ikonin Sergey
Mikhailovich Solovyev Timofey
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 BR112021021434A2 publication Critical patent/BR112021021434A2/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
    • H04N19/10—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
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • H04N19/124—Quantisation
    • 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
    • H04N19/172—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 picture, frame or field
    • 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
    • H04N19/174—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 slice, e.g. a line of blocks or a group of 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
    • H04N19/169—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
    • H04N19/184—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 bits, e.g. of the compressed video stream
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • 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)
  • Image Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Systems (AREA)

Abstract

método e aparelho para sinalização de função de mapeamento de parâmetro de quantização de croma. método de obtenção de um parâmetro de quantização de crominância (qp) para componentes de crominância com base em um qp de luminância para componente de luminância, em que o método é realizado por um decodificador, compreendendo analisar um fluxo de bits recebido para obter o qp de luminância e informações de uma função de mapeamento (f) que associa um índice qp (qpi) à qp de crominância (qpc); obter o qpi com base, pelo menos em uma parte, no qp de luminância; obter a função de mapeamento com base nas informações obtidas; e obter um qpc com base na função de mapeamento obtida e no qpi obtido.
BR112021021434A 2019-04-26 2020-04-26 Método e aparelho para sinalização de função de mapeamento de parâmetro de quantização de croma BR112021021434A2 (pt)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201962839607P 2019-04-26 2019-04-26
RU2019000444 2019-06-21
US201962871197P 2019-07-07 2019-07-07
US201962872238P 2019-07-09 2019-07-09
PCT/CN2020/086933 WO2020216376A1 (en) 2019-04-26 2020-04-26 Method and apparatus for signaling of mapping function of chroma quantization parameter

Publications (1)

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BR112021021434A2 true BR112021021434A2 (pt) 2021-12-21

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BR112021021434A BR112021021434A2 (pt) 2019-04-26 2020-04-26 Método e aparelho para sinalização de função de mapeamento de parâmetro de quantização de croma
BR112021000379-7A BR112021000379A2 (pt) 2019-04-26 2020-04-26 Método e aparelho para sinalização de função de mapeamento de parâmetro de quantização de croma

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US (2) US20220070460A1 (pt)
EP (3) EP3939283A4 (pt)
JP (2) JP7368496B2 (pt)
KR (1) KR20210147063A (pt)
CN (4) CN113767629A (pt)
AU (1) AU2020260657A1 (pt)
BR (2) BR112021021434A2 (pt)
CA (1) CA3137206A1 (pt)
CL (1) CL2021002776A1 (pt)
MX (1) MX2021012861A (pt)
SG (1) SG11202111156PA (pt)
WO (2) WO2020216375A1 (pt)

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EP3939283A1 (en) 2022-01-19
WO2020216376A1 (en) 2020-10-29
CA3137206A1 (en) 2020-10-29
KR20210147063A (ko) 2021-12-06
JP2023179671A (ja) 2023-12-19
CN117714687A (zh) 2024-03-15
EP3939283A4 (en) 2022-05-18
AU2020260657A1 (en) 2021-11-11
EP4346205A2 (en) 2024-04-03
EP4346205A3 (en) 2024-04-24
CN116760984A (zh) 2023-09-15
CN113785577A (zh) 2021-12-10
CN113767629A (zh) 2021-12-07
BR112021000379A2 (pt) 2021-04-13
US20220070462A1 (en) 2022-03-03
JP2022530480A (ja) 2022-06-29
JP7368496B2 (ja) 2023-10-24
CL2021002776A1 (es) 2022-05-20
EP3949402A4 (en) 2022-06-08
US20220070460A1 (en) 2022-03-03
SG11202111156PA (en) 2021-11-29
CN113785577B (zh) 2023-06-27
MX2021012861A (es) 2021-12-10
WO2020216375A1 (en) 2020-10-29
EP3949402A1 (en) 2022-02-09

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