MX2022000141A - Metodo para calcular la posicion de muestra de referencia de rejilla de entero para calculo de gradiente de muestra limite de nivel de bloque en calculo de flujo optico bi-predictivo y correccion bi-predictiva. - Google Patents

Metodo para calcular la posicion de muestra de referencia de rejilla de entero para calculo de gradiente de muestra limite de nivel de bloque en calculo de flujo optico bi-predictivo y correccion bi-predictiva.

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Publication number
MX2022000141A
MX2022000141A MX2022000141A MX2022000141A MX2022000141A MX 2022000141 A MX2022000141 A MX 2022000141A MX 2022000141 A MX2022000141 A MX 2022000141A MX 2022000141 A MX2022000141 A MX 2022000141A MX 2022000141 A MX2022000141 A MX 2022000141A
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Mexico
Prior art keywords
predictive
computation
optical flow
sample
block level
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MX2022000141A
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English (en)
Inventor
Sriram Sethuraman
Sagar Kotecha
Raj A Jeeva
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Huawei Tech Co Ltd
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Publication of MX2022000141A publication Critical patent/MX2022000141A/es

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    • 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
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • 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
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/577—Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
    • 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
    • H04N19/157—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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/523—Motion estimation or motion compensation with sub-pixel accuracy
    • 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
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/537—Motion estimation other than block-based
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/109—Selection of coding mode or of prediction mode among a plurality of temporal 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
    • H04N19/169—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

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (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

Se proporciona un método para predicción de flujo óptico bidireccional con base en valores de muestra de referencia de posiciones de muestra pertenecientes a una región extendida de un bloque predicho utilizado en la predicción de flujo óptico bidireccional de un bloque actual, en donde posiciones de sub-pixel en la región extendida del bloque predicho en la imagen de referencia son redondeadas para obtener posiciones de muestra de pixel entero en la imagen de referencia, en donde los valores de muestra de referencia en la posición de muestra de pixel entero obtenidos en la imagen de referencia son utilizados en el cálculo de gradientes de muestra límite correspondientes a los límites del bloque predicho en la imagen de referencia.
MX2022000141A 2019-06-24 2020-06-23 Metodo para calcular la posicion de muestra de referencia de rejilla de entero para calculo de gradiente de muestra limite de nivel de bloque en calculo de flujo optico bi-predictivo y correccion bi-predictiva. MX2022000141A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201931025013 2019-06-24
PCT/CN2020/097762 WO2020259507A1 (en) 2019-06-24 2020-06-23 Method for computing position of integer grid reference sample for block level boundary sample gradient computation in bi-predictive optical flow computation and bi-predictive correction

Publications (1)

Publication Number Publication Date
MX2022000141A true MX2022000141A (es) 2022-04-27

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US (1) US20220116624A1 (es)
EP (1) EP3981156A4 (es)
JP (2) JP7384939B2 (es)
KR (2) KR20240056654A (es)
CN (1) CN114009041A (es)
AU (1) AU2020308351A1 (es)
BR (1) BR112021026327A2 (es)
CA (1) CA3144797A1 (es)
MX (1) MX2022000141A (es)
WO (1) WO2020259507A1 (es)

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CN117834583A (zh) * 2023-12-08 2024-04-05 南京智数科技有限公司 一种公辅车间的继电保护管理系统及方法

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KR20220024877A (ko) 2022-03-03
US20220116624A1 (en) 2022-04-14
AU2020308351A1 (en) 2022-02-03
EP3981156A4 (en) 2023-02-01
JP7384939B2 (ja) 2023-11-21
KR20240056654A (ko) 2024-04-30
WO2020259507A1 (en) 2020-12-30
JP2022540771A (ja) 2022-09-20
EP3981156A1 (en) 2022-04-13
CN114009041A (zh) 2022-02-01
KR102660120B1 (ko) 2024-04-22
BR112021026327A2 (pt) 2022-03-03
JP2024009038A (ja) 2024-01-19
CA3144797A1 (en) 2020-12-30
WO2020259507A8 (en) 2021-02-25

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