MX2022008397A - Metodo de codificacion de imagenes a base de transformacion, y dispositivo para el mismo. - Google Patents

Metodo de codificacion de imagenes a base de transformacion, y dispositivo para el mismo.

Info

Publication number
MX2022008397A
MX2022008397A MX2022008397A MX2022008397A MX2022008397A MX 2022008397 A MX2022008397 A MX 2022008397A MX 2022008397 A MX2022008397 A MX 2022008397A MX 2022008397 A MX2022008397 A MX 2022008397A MX 2022008397 A MX2022008397 A MX 2022008397A
Authority
MX
Mexico
Prior art keywords
current block
lfnst
transform coefficients
transform
same
Prior art date
Application number
MX2022008397A
Other languages
English (en)
Inventor
Jaehyun Lim
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 MX2022008397A publication Critical patent/MX2022008397A/es

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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
    • H04N19/132—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
    • H04N19/60—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
    • H04N19/70—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
    • H04N19/10—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
    • H04N19/169—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
    • H04N19/46—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
    • H04N19/90—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

Abstract

Un método de decodificación de imágenes de acuerdo con el presente documento puede comprender los pasos de: recibir información de indicador, que indica si una lista de escalamiento está disponible mientras se lleva a cabo una LFNST, y un índice de LFNST e información residual para el bloque actual; determinar, sobre la base de la información de indicador, el índice de LFNST y el tipo de árbol del bloque actual, si la lista de escalamiento es aplicable al bloque actual; derivar coeficientes de transformación para el bloque actual a partir de la información residual sobre la base del resultado de la determinación; y aplicar la LFNST a los coeficientes de transformación para obtener coeficientes de transformación corregidos.
MX2022008397A 2020-01-10 2021-01-11 Metodo de codificacion de imagenes a base de transformacion, y dispositivo para el mismo. MX2022008397A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202062959812P 2020-01-10 2020-01-10
PCT/KR2021/000323 WO2021141469A1 (ko) 2020-01-10 2021-01-11 변환에 기반한 영상 코딩 방법 및 그 장치

Publications (1)

Publication Number Publication Date
MX2022008397A true MX2022008397A (es) 2022-08-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2022008397A MX2022008397A (es) 2020-01-10 2021-01-11 Metodo de codificacion de imagenes a base de transformacion, y dispositivo para el mismo.

Country Status (8)

Country Link
US (2) US11659186B2 (es)
EP (1) EP4090030A4 (es)
JP (2) JP7451722B2 (es)
KR (1) KR20220098017A (es)
CN (1) CN114930849A (es)
BR (1) BR112022013561A2 (es)
MX (1) MX2022008397A (es)
WO (1) WO2021141469A1 (es)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105512093A (zh) * 2010-09-28 2016-04-20 三星电子株式会社 视频编码方法和装置以及解码方法和装置
PL230821B1 (pl) * 2011-10-17 2018-12-31 Kt Corp Sposób i urządzenie do kodowania/dekodowania obrazu
WO2017203930A1 (en) * 2016-05-27 2017-11-30 Sharp Kabushiki Kaisha Systems and methods for varying quantization parameters
US11722698B2 (en) 2016-08-24 2023-08-08 Sony Corporation Image processing apparatus and image processing method
US11166045B2 (en) * 2017-10-11 2021-11-02 Lg Electronics Inc. Method for image coding on basis of separable transform and apparatus therefor
CN111434109A (zh) * 2017-11-28 2020-07-17 韩国电子通信研究院 图像编码/解码方法和装置以及存储有比特流的记录介质
US11039139B2 (en) * 2018-09-14 2021-06-15 Tencent America LLC Method and apparatus for identity transform in multiple transform selection
WO2020060242A1 (ko) * 2018-09-19 2020-03-26 한국전자통신연구원 화면 내 예측 모드 부호화/복호화 방법, 장치 및 비트스트림을 저장한 기록 매체
WO2020192633A1 (en) * 2019-03-25 2020-10-01 Mediatek Inc. Method and apparatus of the quantization matrix computation and representation for video coding
KR20190140423A (ko) * 2019-07-02 2019-12-19 광운대학교 산학협력단 스케일링을 이용한 잔차 블록 부호화/복호화 방법 및 장치
US11457229B2 (en) * 2019-12-23 2022-09-27 Qualcomm Incorporated LFNST signaling for chroma based on chroma transform skip

Also Published As

Publication number Publication date
CN114930849A (zh) 2022-08-19
EP4090030A4 (en) 2024-01-10
EP4090030A1 (en) 2022-11-16
JP2023509747A (ja) 2023-03-09
US20230224468A1 (en) 2023-07-13
BR112022013561A2 (pt) 2022-09-06
US11659186B2 (en) 2023-05-23
KR20220098017A (ko) 2022-07-08
JP2024053020A (ja) 2024-04-12
WO2021141469A1 (ko) 2021-07-15
JP7451722B2 (ja) 2024-03-18
US20220345713A1 (en) 2022-10-27

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