MX2022005540A - Metodo de codificacion de imagenes a base de conversion, y dispositivo para el mismo. - Google Patents

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

Info

Publication number
MX2022005540A
MX2022005540A MX2022005540A MX2022005540A MX2022005540A MX 2022005540 A MX2022005540 A MX 2022005540A MX 2022005540 A MX2022005540 A MX 2022005540A MX 2022005540 A MX2022005540 A MX 2022005540A MX 2022005540 A MX2022005540 A MX 2022005540A
Authority
MX
Mexico
Prior art keywords
area
conversion
coefficients
flag information
valid coefficients
Prior art date
Application number
MX2022005540A
Other languages
English (en)
Inventor
Jaehyun Lim
Moonmo Koo
Seunghwan Kim
Mehdi Salehifar
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 MX2022005540A publication Critical patent/MX2022005540A/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
    • 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
    • H04N19/102—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
    • H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
    • 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

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)

Abstract

Un método de decodificación de imágenes de acuerdo con el presente documento comprende los pasos de: derivar información indicadora que indique si hay coeficientes válidos presentes en una segunda área excluyendo una primera área de la esquina superior izquierda del bloque actual; analizar sintácticamente un índice de MTS de un flujo de bits sobre la base de que la información indicadora indique la ausencia de coeficientes válidos en la segunda área; y derivar muestras residuales para el bloque actual aplicando un núcleo de conversión derivado sobre la base del índice de MTS a los coeficientes de conversión de la primera área, en donde la información indicadora puede derivarse determinando, para cada subbloque de escaneo en el que sean escaneados los coeficientes válidos, si los coeficientes válidos están presentes en la segunda área.
MX2022005540A 2019-11-11 2020-11-09 Metodo de codificacion de imagenes a base de conversion, y dispositivo para el mismo. MX2022005540A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201962933971P 2019-11-11 2019-11-11
US201962933954P 2019-11-11 2019-11-11
PCT/KR2020/015588 WO2021096173A1 (ko) 2019-11-11 2020-11-09 변환에 기반한 영상 코딩 방법 및 그 장치

Publications (1)

Publication Number Publication Date
MX2022005540A true MX2022005540A (es) 2022-08-15

Family

ID=75912182

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2022005540A MX2022005540A (es) 2019-11-11 2020-11-09 Metodo de codificacion de imagenes a base de conversion, y dispositivo para el mismo.

Country Status (6)

Country Link
US (2) US11962779B2 (es)
KR (1) KR20220058584A (es)
CN (1) CN114930845A (es)
CA (1) CA3161299A1 (es)
MX (1) MX2022005540A (es)
WO (1) WO2021096173A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023173255A1 (zh) * 2022-03-14 2023-09-21 Oppo广东移动通信有限公司 图像编解码方法、装置、设备、系统、及存储介质

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7949054B2 (en) * 2006-06-01 2011-05-24 Microsoft Corporation Flexible data organization for images
EP2154894A1 (en) 2008-08-15 2010-02-17 Thomson Licensing Video coding with coding of the locations of significant coefficients in a block of coefficients
US8964849B2 (en) * 2011-11-01 2015-02-24 Blackberry Limited Multi-level significance maps for encoding and decoding
US9344722B2 (en) * 2011-11-18 2016-05-17 Futurewei Technologies, Inc. Scanning of prediction residuals in high efficiency video coding
CN108769691B (zh) * 2011-12-28 2022-05-31 夏普株式会社 图像解码装置、图像解码方法以及图像编码装置
AU2012200319B2 (en) * 2012-01-19 2015-11-26 Canon Kabushiki Kaisha Method, apparatus and system for encoding and decoding the significance map for residual coefficients of a transform unit
CN108712652A (zh) * 2012-06-29 2018-10-26 韩国电子通信研究院 视频编码方法和计算机可读介质
US10681379B2 (en) 2015-09-29 2020-06-09 Qualcomm Incorporated Non-separable secondary transform for video coding with reorganizing
US10674146B2 (en) * 2015-09-30 2020-06-02 Lg Electronics Inc. Method and device for coding residual signal in video coding system
WO2019117636A1 (ko) * 2017-12-15 2019-06-20 엘지전자 주식회사 비분리 2차 변환에 기반한 영상 코딩 방법 및 그 장치
KR101969933B1 (ko) 2018-05-28 2019-04-17 삼성전자주식회사 레지듀얼 블록의 부호화 방법 및 장치, 복호화 방법 및 장치

Also Published As

Publication number Publication date
CN114930845A (zh) 2022-08-19
US20240214574A1 (en) 2024-06-27
US11962779B2 (en) 2024-04-16
CA3161299A1 (en) 2021-05-20
WO2021096173A1 (ko) 2021-05-20
KR20220058584A (ko) 2022-05-09
US20220408094A1 (en) 2022-12-22

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