MX2022005694A - 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
MX2022005694A
MX2022005694A MX2022005694A MX2022005694A MX2022005694A MX 2022005694 A MX2022005694 A MX 2022005694A MX 2022005694 A MX2022005694 A MX 2022005694A MX 2022005694 A MX2022005694 A MX 2022005694A MX 2022005694 A MX2022005694 A MX 2022005694A
Authority
MX
Mexico
Prior art keywords
deriving
transform
transform coefficients
coding method
image coding
Prior art date
Application number
MX2022005694A
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 MX2022005694A publication Critical patent/MX2022005694A/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
    • H04N19/12—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
    • 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
    • H04N19/10—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
    • H04N19/132—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
    • H04N19/167—Position within a video image, e.g. region of interest [ROI]
    • 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
    • H04N19/60—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
    • H04N19/70—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
    • H04N19/90—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

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 el paso de obtener coeficientes de transformación modificados aplicando LFNST a los coeficientes de transformación, en donde el paso de obtener los coeficientes de transformación modificados comprende los pasos de: obtener una variable que indique si un coeficiente efectivo está presente en un componente de DC de un bloque actual; y analizar un índice de LFNST sobre la base de si la variable indica que el coeficiente efectivo está presente en una posición distinta del componente de DC, en donde la variable puede derivarse sobre la base de un valor de indicador de salto de transformación individual para un componente de color del bloque actual.
MX2022005694A 2019-11-13 2020-11-13 Metodo de codificacion de imagenes a base de transformacion y dispositivo para el mismo. MX2022005694A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201962935062P 2019-11-13 2019-11-13
US201962935068P 2019-11-13 2019-11-13
PCT/KR2020/016004 WO2021096295A1 (ko) 2019-11-13 2020-11-13 변환에 기반한 영상 코딩 방법 및 그 장치

Publications (1)

Publication Number Publication Date
MX2022005694A true MX2022005694A (es) 2022-07-19

Family

ID=75913083

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2022005694A MX2022005694A (es) 2019-11-13 2020-11-13 Metodo de codificacion de imagenes a base de transformacion y dispositivo para el mismo.

Country Status (6)

Country Link
US (1) US20220394257A1 (es)
KR (1) KR20220066351A (es)
CN (1) CN114930847A (es)
BR (1) BR112022009295A2 (es)
MX (1) MX2022005694A (es)
WO (1) WO2021096295A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021096290A1 (ko) * 2019-11-13 2021-05-20 엘지전자 주식회사 변환에 기반한 영상 코딩 방법 및 그 장치
AU2019275553B2 (en) * 2019-12-03 2022-10-06 Canon Kabushiki Kaisha Method, apparatus and system for encoding and decoding a coding tree unit
KR20220106209A (ko) * 2019-12-12 2022-07-28 에이치에프아이 이노베이션 인크. 이미지 코딩에서 제한된 2차 변환 및 그의 시그널링을 위한 방법들 및 장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US10681379B2 (en) * 2015-09-29 2020-06-09 Qualcomm Incorporated Non-separable secondary transform for video coding with reorganizing
EP3453181A4 (en) * 2016-05-04 2019-05-01 Sharp Kabushiki Kaisha SYSTEMS AND METHODS FOR ENCODING TRANSFORMED DATA
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
KR20220066351A (ko) 2022-05-24
WO2021096295A1 (ko) 2021-05-20
CN114930847A (zh) 2022-08-19
BR112022009295A2 (pt) 2022-08-09
US20220394257A1 (en) 2022-12-08

Similar Documents

Publication Publication Date Title
MX2022005694A (es) Metodo de codificacion de imagenes a base de transformacion y dispositivo para el mismo.
MX2022005517A (es) Metodo de codificacion de imagenes a base de transformacion y dispositivo para el mismo.
MX2021006039A (es) Un codificador, un decodificador y métodos correspondientes para interpredicción.
MX2021008449A (es) Metodo y dispositivo de codificacion de imagen usando bandera de salto de transformacion.
PH12017502250A1 (en) Grouping palette bypass bins for video coding
MX2022005495A (es) Método de codificación de imágenes a base de transformación y dispositivo para el mismo.
RU2020129092A (ru) Устройство и способ обработки изображения
MX2021005493A (es) Metodo para codificar el coeficiente de transformacion con base en la puesta a cero de frecuencia alta y aparato del mismo.
PH12014502365A1 (en) Quantization parameter (qp) coding in video coding
ZA202106351B (en) Constraints on model-based reshaping in video processing
MY171481A (en) Video encoding method and video encoding apparatus and video decoding method and video decoding apparatus for signaling sao parameters
RU2014145826A (ru) Способ обновления параметров для энтропийного кодирования и декодирования уровня коэффициентов преобразования, а также устройство энтропийного кодирования и устройство энтропийного декодирования уровня коэффициентов преобразования с его использованием
MY168865A (en) Image processing device and method
CA2854074C (en) Method and apparatus for determining context model of transform coefficient level in entropy coding and decoding
MX2022003321A (es) Metodo de codificacion de imagenes a base de transformacion y dispositivo para el mismo.
MX2021012861A (es) Metodo y aparato para se?alizacion de funcion de mapeo de parametro de cuantificacion de croma.
MX2021002815A (es) Metodo de codificacion residual y dispositivo para lo mismo.
MX2022003998A (es) Metodo de codificacion de imagenes a base de transformacion, y aparato para el mismo.
MX2021014277A (es) Metodo y aparato de codificacion de video que utilizan conjunto de parametros adaptativos.
MX2022006190A (es) Metodo y dispositivo de codificacion/decodificacion de imagenes usando transformacion de color sin perdidas y metodo para transmitir flujo de bits.
MX2022005103A (es) Método de codificación de imágenes a base de transformación y aparato para el mismo.
MX2022005747A (es) Metodo de codificacion de imagenes a base de transformacion y aparato para el mismo.
MX2021016155A (es) Codificacion de informacion sobre un conjunto de nucleos de transformacion.
MX2021015639A (es) Metodo de codificacion de imagenes a base de transformacion y dispositivo para el mismo.
PH12021550614A1 (en) A method and an apparatus for encoding and decoding of digital image/video