MX2021011367A - Interprediccion de video basada en flujo optico. - Google Patents

Interprediccion de video basada en flujo optico.

Info

Publication number
MX2021011367A
MX2021011367A MX2021011367A MX2021011367A MX2021011367A MX 2021011367 A MX2021011367 A MX 2021011367A MX 2021011367 A MX2021011367 A MX 2021011367A MX 2021011367 A MX2021011367 A MX 2021011367A MX 2021011367 A MX2021011367 A MX 2021011367A
Authority
MX
Mexico
Prior art keywords
optical flow
inter prediction
flow based
based video
coding block
Prior art date
Application number
MX2021011367A
Other languages
English (en)
Inventor
Sriram Sethuraman
Raj A Jeeva
Sagar Kotecha
Original Assignee
Huawei Tech Co 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
Application filed by Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of MX2021011367A publication Critical patent/MX2021011367A/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
    • H04N19/50—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
    • H04N19/169—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
    • H04N19/172—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 picture, frame or field
    • 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
    • H04N19/50—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
    • H04N19/513—Processing of motion vectors
    • H04N19/521—Processing of motion vectors for estimating the reliability of the determined motion vectors or motion vector field, e.g. for smoothing the motion vector field or for correcting motion vectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

En algunas modalidades, un codificador de video o un decodificador de video obtiene un par de vectores de movimiento para un bloque de codificación actual de una señal de video con respecto a dos cuadros de referencia. Se generan predicciones del bloque actual usando el par de vectores de movimiento de cuadros de referencia respectivos. El codificador de video o decodificador de video determina además un flujo óptico para el bloque de codificación actual con base en valores de muestras en las predicciones. Un componente del flujo óptico se determina con base en el otro componente del flujo óptico. El flujo óptico bi-predictivo (BPOF) se puede realizar en el bloque de codificación actual usando el flujo óptico determinado.
MX2021011367A 2019-03-19 2020-03-19 Interprediccion de video basada en flujo optico. MX2021011367A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201931010751 2019-03-19
PCT/CN2020/080156 WO2020187284A1 (en) 2019-03-19 2020-03-19 Optical flow based video inter prediction

Publications (1)

Publication Number Publication Date
MX2021011367A true MX2021011367A (es) 2021-11-12

Family

ID=72518957

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2021011367A MX2021011367A (es) 2019-03-19 2020-03-19 Interprediccion de video basada en flujo optico.

Country Status (11)

Country Link
US (1) US11889109B2 (es)
EP (2) EP4376410A2 (es)
JP (2) JP7231759B2 (es)
KR (1) KR102611845B1 (es)
CN (1) CN113597769A (es)
AU (1) AU2020242490A1 (es)
BR (1) BR112021018447A2 (es)
CA (1) CA3133984A1 (es)
IL (1) IL286530A (es)
MX (1) MX2021011367A (es)
WO (1) WO2020187284A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2020298425A1 (en) * 2019-06-21 2021-12-23 Panasonic Intellectual Property Corporation Of America Encoder, decoder, encoding method, and decoding method
KR102609572B1 (ko) * 2021-11-24 2023-12-05 숭실대학교 산학협력단 동영상 예측 장치, 방법 및 이를 위한 컴퓨터 판독가능 프로그램
US11968356B2 (en) * 2022-03-16 2024-04-23 Qualcomm Incorporated Decoder-side motion vector refinement (DMVR) inter prediction using shared interpolation filters and reference pixels

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112019018922A8 (pt) * 2017-03-16 2023-02-07 Mediatek Inc Método e aparelho de refinamento de movimento com base em fluxo óptico bi-direcional para codificação de vídeo
CN116708829A (zh) 2017-04-24 2023-09-05 Sk电信有限公司 编解码视频数据的装置、发送编码视频数据比特流的方法
US10904565B2 (en) * 2017-06-23 2021-01-26 Qualcomm Incorporated Memory-bandwidth-efficient design for bi-directional optical flow (BIO)

Also Published As

Publication number Publication date
JP7231759B2 (ja) 2023-03-01
JP2023071762A (ja) 2023-05-23
KR102611845B1 (ko) 2023-12-07
AU2020242490A1 (en) 2021-10-28
WO2020187284A1 (en) 2020-09-24
BR112021018447A2 (pt) 2021-11-23
US11889109B2 (en) 2024-01-30
CN113597769A (zh) 2021-11-02
IL286530A (en) 2021-10-31
JP2022525943A (ja) 2022-05-20
EP3942825A1 (en) 2022-01-26
EP4376410A2 (en) 2024-05-29
CA3133984A1 (en) 2020-09-24
US20220007051A1 (en) 2022-01-06
KR20210129736A (ko) 2021-10-28
EP3942825B1 (en) 2024-05-01
EP3942825A4 (en) 2022-05-18
WO2020187284A8 (en) 2021-02-25

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