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MX2018002646A - Metodo y aparato para cuantificacion de codificacion y decodificacion de video. - Google Patents

Metodo y aparato para cuantificacion de codificacion y decodificacion de video.

Info

Publication number
MX2018002646A
MX2018002646A MX2018002646A MX2018002646A MX2018002646A MX 2018002646 A MX2018002646 A MX 2018002646A MX 2018002646 A MX2018002646 A MX 2018002646A MX 2018002646 A MX2018002646 A MX 2018002646A MX 2018002646 A MX2018002646 A MX 2018002646A
Authority
MX
Mexico
Prior art keywords
quantization
block
quantization parameter
luminance
adjusted
Prior art date
Application number
MX2018002646A
Other languages
English (en)
Inventor
Francois Edouard
Galpin Franck
Gurnel Hadrien
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of MX2018002646A publication Critical patent/MX2018002646A/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
    • H04N19/124—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
    • H04N19/134—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
    • H04N19/186—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
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Debido a que los ojos humanos se vuelven menos sensibles a las áreas oscuras alrededor de áreas muy brillantes en un video (conocido como enmascaramiento de brillo), podemos utilizar cuantificación más burda en tales áreas oscuras. Considerando la distorsión extra que los ojos humanos pueden tolerar en un bloque con enmascaramiento de brillo, se puede calcular una relación de cuantificación para el bloque. El parámetro de cuantificación para el bloque se puede entonces escalar ascendentemente utilizando la relación de cuantificación para formar un parámetro de cuantificación ajustado. En una modalidad, el parámetro de cuantificación ajustado se puede derivar en el lado del decodificador, y por lo tanto, no es necesaria la transmisión de la información de relación de cuantificación. En particular, podemos estimar la luminancia de un bloque actual con base en un bloque predicho y descuantificar el coeficiente de DC, y utilizar la luminancia de bloques vecinos causales y la luminancia estimada del bloque actual para estimar el parámetro de cuantificación ajustado.
MX2018002646A 2015-09-02 2016-09-02 Metodo y aparato para cuantificacion de codificacion y decodificacion de video. MX2018002646A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP15306348 2015-09-02
PCT/EP2016/070711 WO2017037228A1 (en) 2015-09-02 2016-09-02 Method and apparatus for quantization in video encoding and decoding

Publications (1)

Publication Number Publication Date
MX2018002646A true MX2018002646A (es) 2018-06-20

Family

ID=54148449

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2018002646A MX2018002646A (es) 2015-09-02 2016-09-02 Metodo y aparato para cuantificacion de codificacion y decodificacion de video.

Country Status (10)

Country Link
US (1) US10491899B2 (es)
EP (1) EP3345395A1 (es)
JP (1) JP6989491B2 (es)
KR (1) KR102798591B1 (es)
CN (1) CN108141598B (es)
CA (1) CA2996349A1 (es)
MX (1) MX2018002646A (es)
RU (1) RU2018111430A (es)
TW (1) TWI727968B (es)
WO (1) WO2017037228A1 (es)

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Also Published As

Publication number Publication date
RU2018111430A (ru) 2019-10-07
US20180255302A1 (en) 2018-09-06
CN108141598A (zh) 2018-06-08
CN108141598B (zh) 2022-10-04
JP6989491B2 (ja) 2022-01-05
TW201720157A (zh) 2017-06-01
US10491899B2 (en) 2019-11-26
EP3345395A1 (en) 2018-07-11
TWI727968B (zh) 2021-05-21
KR20180048654A (ko) 2018-05-10
RU2018111430A3 (es) 2020-03-10
KR102798591B1 (ko) 2025-04-23
JP2018533860A (ja) 2018-11-15
CA2996349A1 (en) 2017-03-09
WO2017037228A1 (en) 2017-03-09

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