MX2022005105A - Metodo de codificacion de imagenes a base de transformacion y aparato para el mismo. - Google Patents

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

Info

Publication number
MX2022005105A
MX2022005105A MX2022005105A MX2022005105A MX2022005105A MX 2022005105 A MX2022005105 A MX 2022005105A MX 2022005105 A MX2022005105 A MX 2022005105A MX 2022005105 A MX2022005105 A MX 2022005105A MX 2022005105 A MX2022005105 A MX 2022005105A
Authority
MX
Mexico
Prior art keywords
intra prediction
prediction mode
chroma block
basis
transform
Prior art date
Application number
MX2022005105A
Other languages
English (en)
Inventor
Jaehyun Lim
Moonmo Koo
Hyeongmoon Jang
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 MX2022005105A publication Critical patent/MX2022005105A/es

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
    • H04N19/132—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
    • 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
    • H04N19/12—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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for 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
    • H04N19/102—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
    • H04N19/134—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
    • H04N19/50—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

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)

Abstract

Un método de decodificación de imágenes de acuerdo con el presente documento puede comprender los pasos de: derivar un modo de intra predicción de un bloque de croma como un modo de modelo lineal de componentes cruzados (CCLM) sobre la base de información de modo de intra predicción; actualizar el modo de intra predicción del bloque de croma sobre la base de un modo de intra predicción de un bloque de luma correspondiente al bloque de croma; cuando el bloque de croma no sea cuadrado, volver a mapear el modo de intra predicción actualizado a un modo de intra predicción de gran angular; y determinar un conjunto de LFNST que incluya matrices de LFNST sobre la base del modo de intra predicción mapeado.
MX2022005105A 2019-10-29 2020-10-29 Metodo de codificacion de imagenes a base de transformacion y aparato para el mismo. MX2022005105A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962927662P 2019-10-29 2019-10-29
PCT/KR2020/014929 WO2021086064A1 (ko) 2019-10-29 2020-10-29 변환에 기반한 영상 코딩 방법 및 그 장치

Publications (1)

Publication Number Publication Date
MX2022005105A true MX2022005105A (es) 2022-08-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
MX2022005105A MX2022005105A (es) 2019-10-29 2020-10-29 Metodo de codificacion de imagenes a base de transformacion y aparato para el mismo.

Country Status (6)

Country Link
US (2) US11546600B2 (es)
JP (3) JP7225472B2 (es)
KR (2) KR102482781B1 (es)
CN (2) CN116600140A (es)
MX (1) MX2022005105A (es)
WO (1) WO2021086064A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7225472B2 (ja) * 2019-10-29 2023-02-20 エルジー エレクトロニクス インコーポレイティド 変換に基づく映像コーディング方法及びその装置

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US11025903B2 (en) * 2017-01-13 2021-06-01 Qualcomm Incorporated Coding video data using derived chroma mode
US11284108B2 (en) * 2017-10-24 2022-03-22 Wilus Institute Of Standards And Technology Inc. Video signal processing method and apparatus
US11190790B2 (en) * 2018-04-01 2021-11-30 Lg Electronics Inc. Parallel processing method for color component of video signal, and device therefor
WO2019198997A1 (ko) * 2018-04-11 2019-10-17 엘지전자 주식회사 인트라 예측에 기반한 영상 코딩 방법 및 그 장치
US10284844B1 (en) 2018-07-02 2019-05-07 Tencent America LLC Method and apparatus for video coding
CN111567041B (zh) 2018-07-13 2022-04-29 瑞典爱立信有限公司 视频编码器和/或视频解码器中的变换选择
WO2020228673A1 (en) 2019-05-10 2020-11-19 Beijing Bytedance Network Technology Co., Ltd. Conditional use of reduced secondary transform for video processing
US11134275B2 (en) * 2019-06-04 2021-09-28 Tencent America LLC Method and apparatus for performing primary transform based on filtering of blocks
US11509931B2 (en) * 2019-06-07 2022-11-22 Tencent America LLC Method and apparatus for video coding
US11212545B2 (en) * 2019-06-07 2021-12-28 Tencent America LLC Method and apparatus for improved implicit transform selection
GB2585030A (en) * 2019-06-25 2020-12-30 British Broadcasting Corp Method of signalling in a video codec
CN114208183A (zh) 2019-08-03 2022-03-18 北京字节跳动网络技术有限公司 视频的缩减二次变换中基于位置的模式导出
US11438616B2 (en) * 2019-08-27 2022-09-06 Tencent America LLC Method and apparatus for video coding
WO2021047542A1 (en) * 2019-09-09 2021-03-18 Beijing Bytedance Network Technology Co., Ltd. Recursive splitting of video coding blocks
US11206400B2 (en) * 2019-09-26 2021-12-21 Qualcomm Incorporated Low-frequency non-separable transform (LFNST) simplifications
JP7225472B2 (ja) * 2019-10-29 2023-02-20 エルジー エレクトロニクス インコーポレイティド 変換に基づく映像コーディング方法及びその装置

Also Published As

Publication number Publication date
KR20230003459A (ko) 2023-01-05
WO2021086064A1 (ko) 2021-05-06
CN116600140A (zh) 2023-08-15
KR20220061181A (ko) 2022-05-12
CN114846799A (zh) 2022-08-02
JP7472337B2 (ja) 2024-04-22
KR102482781B1 (ko) 2022-12-29
US20220264105A1 (en) 2022-08-18
US11902530B2 (en) 2024-02-13
US20230080150A1 (en) 2023-03-16
JP7225472B2 (ja) 2023-02-20
US11546600B2 (en) 2023-01-03
JP2023053018A (ja) 2023-04-12
JP2022547744A (ja) 2022-11-15
JP2024074974A (ja) 2024-05-31
CN114846799B (zh) 2023-06-13

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