MX2021011333A - Cuantificación de residuos en codificación de vídeo. - Google Patents

Cuantificación de residuos en codificación de vídeo.

Info

Publication number
MX2021011333A
MX2021011333A MX2021011333A MX2021011333A MX2021011333A MX 2021011333 A MX2021011333 A MX 2021011333A MX 2021011333 A MX2021011333 A MX 2021011333A MX 2021011333 A MX2021011333 A MX 2021011333A MX 2021011333 A MX2021011333 A MX 2021011333A
Authority
MX
Mexico
Prior art keywords
create
coefficients
video
encoding
residuals
Prior art date
Application number
MX2021011333A
Other languages
English (en)
Inventor
Guido Meardi
Original Assignee
V Nova Int Ltd
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
Priority claimed from GBGB1903844.7A external-priority patent/GB201903844D0/en
Priority claimed from GBGB1904014.6A external-priority patent/GB201904014D0/en
Priority claimed from GBGB1904492.4A external-priority patent/GB201904492D0/en
Priority claimed from GBGB1905325.5A external-priority patent/GB201905325D0/en
Application filed by V Nova Int Ltd filed Critical V Nova Int Ltd
Publication of MX2021011333A publication Critical patent/MX2021011333A/es

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    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
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    • H04N19/33—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the spatial domain
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    • H04N19/103—Selection of coding mode or of prediction mode
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  • 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, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

Según aspectos de la invención, se proporciona un método para codificar un video de entrada en una pluralidad de flujos codificados, en donde los flujos codificados pueden combinarse para reconstruir el video de entrada; puede proporcionarse un método de codificación que comprende: recibir un video de entrada; muestrear de forma descendente el video de entrada para crear un video con muestreo descendente; instruir una codificación del video con muestreo descendente usando un codificador base para crear un flujo codificado de base; instruir una decodificación del flujo codificado de base usando un decodificador de base para generar un video reconstruido; comparar el video reconstruido con el video con muestreo descendente para crear un primer conjunto de residuos; y codificar el primer conjunto de residuos para crear un flujo codificado de primer nivel, que incluye: aplicar una transformación al primer conjunto de residuos para crear un primer conjunto de coeficientes; aplicar una operación de cuantificación al primer conjunto de coeficientes para crear un primer conjunto de coeficientes cuantificados; y aplicar una operación de codificación al primer conjunto de coeficientes cuantificados, en donde la aplicación de la operación de cuantificación comprende: adaptar la cuantificación basada en el primer conjunto de coeficientes por cuantificar, incluyendo variar un ancho de paso usado para diferentes coeficientes del primer conjunto de coeficientes, en donde un primer conjunto de parámetros derivados de la adaptación se señaliza a un decodificador para permitir la descuantificación del primer conjunto de coeficientes cuantificados.
MX2021011333A 2019-03-20 2020-03-19 Cuantificación de residuos en codificación de vídeo. MX2021011333A (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GBGB1903844.7A GB201903844D0 (en) 2019-03-20 2019-03-20 A method of encoding and decoding a video
GBGB1904014.6A GB201904014D0 (en) 2019-03-23 2019-03-23 Video coding technology
GBGB1904492.4A GB201904492D0 (en) 2019-03-29 2019-03-29 Video coding technology
GBGB1905325.5A GB201905325D0 (en) 2019-04-15 2019-04-15 Video coding technology
PCT/GB2020/050725 WO2020188282A1 (en) 2019-03-20 2020-03-19 Quantization of residuals in video coding

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MX2021011333A true MX2021011333A (es) 2021-12-10

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Application Number Title Priority Date Filing Date
MX2021011337A MX2021011337A (es) 2019-03-20 2020-03-10 Muestreo ascendente modificado para tecnología de codificación de video.
MX2021011333A MX2021011333A (es) 2019-03-20 2020-03-19 Cuantificación de residuos en codificación de vídeo.

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MX2021011337A MX2021011337A (es) 2019-03-20 2020-03-10 Muestreo ascendente modificado para tecnología de codificación de video.

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US (4) US20220159250A1 (es)
EP (5) EP3942818A1 (es)
JP (2) JP7548934B2 (es)
KR (2) KR20220003509A (es)
CN (4) CN113994689A (es)
AU (2) AU2020244264A1 (es)
BR (2) BR112021018469A2 (es)
CA (2) CA3133943A1 (es)
DK (1) DK3942814T3 (es)
FI (1) FI3942814T3 (es)
GB (6) GB2617304B (es)
MX (2) MX2021011337A (es)
PL (1) PL3942814T3 (es)
WO (4) WO2020188237A1 (es)
ZA (1) ZA202107043B (es)

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