MX2022002254A - Metodo y aparato en refinamiento de prediccion con flujo optico. - Google Patents

Metodo y aparato en refinamiento de prediccion con flujo optico.

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Publication number
MX2022002254A
MX2022002254A MX2022002254A MX2022002254A MX2022002254A MX 2022002254 A MX2022002254 A MX 2022002254A MX 2022002254 A MX2022002254 A MX 2022002254A MX 2022002254 A MX2022002254 A MX 2022002254A MX 2022002254 A MX2022002254 A MX 2022002254A
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MX
Mexico
Prior art keywords
decoder obtains
prediction
horizontal
samples
refinements
Prior art date
Application number
MX2022002254A
Other languages
English (en)
Inventor
Xianglin Wang
Xiaoyu Xiu
Yi - Wen Chen
Bing Yu
Original Assignee
Beijing Dajia Internet Information 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 Beijing Dajia Internet Information Tech Co Ltd filed Critical Beijing Dajia Internet Information Tech Co Ltd
Publication of MX2022002254A publication Critical patent/MX2022002254A/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
    • H04N19/50—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
    • H04N19/517—Processing of motion vectors by encoding
    • H04N19/52—Processing of motion vectors by encoding by predictive encoding
    • 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
    • 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
    • H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
    • 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
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • 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
    • 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
    • H04N19/527—Global motion vector estimation
    • 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
    • H04N19/54—Motion estimation other than block-based using feature points or meshes
    • 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
    • H04N19/573—Motion compensation with multiple frame prediction using two or more reference frames in a given prediction direction

Landscapes

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

Abstract

Se proporcionan métodos, aparatos y medios de almacenamiento legible por computadora notransitorios para decodificar una señal de video; un decodificador obtiene primera imagen de referencia y segunda imagen de referencia asociadas con un bloque de video; el decodificador obtiene el primer y segundo valores de gradiente horizontal y vertical; el decodificador obtiene el primer y segundo refinamientos de movimiento horizontal y vertical con base en vectores de movimiento de punto de control; el decodificador obtiene primer y segundo refinamientos de predicción con base en el primer y segundo valores de gradiente horizontal y vertical y el primer y segundo refinamientos de movimiento horizontal y vertical; el decodificador obtiene primera y segunda muestras refinadas con base en la primera y segunda muestras de predicción, y el primer y segundo refinamientos de predicción; el decodificador obtiene muestras de predicción finales del bloque de video con base en la primera y segunda muestras refinadas manipulando la primera y segunda muestras refinadas y parámetros de predicción para evitar sobreflujo de multiplicación.
MX2022002254A 2019-08-23 2020-08-24 Metodo y aparato en refinamiento de prediccion con flujo optico. MX2022002254A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962891273P 2019-08-23 2019-08-23
PCT/US2020/047669 WO2021041332A1 (en) 2019-08-23 2020-08-24 Methods and apparatus on prediction refinement with optical flow

Publications (1)

Publication Number Publication Date
MX2022002254A true MX2022002254A (es) 2022-03-22

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MX2022002254A MX2022002254A (es) 2019-08-23 2020-08-24 Metodo y aparato en refinamiento de prediccion con flujo optico.

Country Status (7)

Country Link
US (1) US20220182659A1 (es)
EP (1) EP4018667A4 (es)
JP (3) JP7199598B2 (es)
KR (2) KR102486982B1 (es)
CN (2) CN116320473A (es)
MX (1) MX2022002254A (es)
WO (1) WO2021041332A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112913247B (zh) 2018-10-23 2023-04-28 北京字节跳动网络技术有限公司 使用局部照明补偿的视频处理
WO2020147747A1 (en) * 2019-01-15 2020-07-23 Beijing Bytedance Network Technology Co., Ltd. Weighted prediction in video coding
CN117395419A (zh) * 2019-05-16 2024-01-12 北京字节跳动网络技术有限公司 基于子区域的运动信息细化确定
CN114424543A (zh) 2019-09-12 2022-04-29 阿里巴巴集团控股有限公司 用于发送视频编解码信息的方法和装置
US11641475B2 (en) * 2019-09-12 2023-05-02 Alibaba Group Holding Limited Method and apparatus for encoding or decoding video
JP2021052225A (ja) * 2019-09-20 2021-04-01 Kddi株式会社 画像復号装置、画像復号方法及びプログラム
WO2023221993A1 (en) * 2022-05-16 2023-11-23 Mediatek Inc. Method and apparatus of decoder-side motion vector refinement and bi-directional optical flow for video coding

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102653715B1 (ko) * 2017-07-03 2024-04-01 브이아이디 스케일, 인크. 양방향 광학 흐름에 기반한 모션 보상 예측
WO2021034123A1 (ko) * 2019-08-22 2021-02-25 엘지전자 주식회사 가중 예측을 수행하는 영상 부호화/복호화 방법, 장치 및 비트스트림을 전송하는 방법

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Publication number Publication date
EP4018667A4 (en) 2023-07-05
WO2021041332A1 (en) 2021-03-04
KR20230011479A (ko) 2023-01-20
JP7199598B2 (ja) 2023-01-05
US20220182659A1 (en) 2022-06-09
CN116320473A (zh) 2023-06-23
JP7372433B2 (ja) 2023-10-31
EP4018667A1 (en) 2022-06-29
JP7538313B2 (ja) 2024-08-21
JP2023036776A (ja) 2023-03-14
KR20220044832A (ko) 2022-04-11
JP2023179747A (ja) 2023-12-19
JP2022536208A (ja) 2022-08-12
CN114342379A (zh) 2022-04-12
KR102486982B1 (ko) 2023-01-10

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