CO2021015352A2 - Refinamiento de predicción basada en gradientes para codificación de video - Google Patents

Refinamiento de predicción basada en gradientes para codificación de video

Info

Publication number
CO2021015352A2
CO2021015352A2 CONC2021/0015352A CO2021015352A CO2021015352A2 CO 2021015352 A2 CO2021015352 A2 CO 2021015352A2 CO 2021015352 A CO2021015352 A CO 2021015352A CO 2021015352 A2 CO2021015352 A2 CO 2021015352A2
Authority
CO
Colombia
Prior art keywords
gradient
prediction
refinement
based prediction
video encoder
Prior art date
Application number
CONC2021/0015352A
Other languages
English (en)
Inventor
Marta Karczewicz
Wei-Jung Chien
Han Huang
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of CO2021015352A2 publication Critical patent/CO2021015352A2/es

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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
    • H04N19/103—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
    • H04N19/50—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
    • H04N19/10—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
    • 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
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence 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
    • H04N19/10—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
    • H04N19/17—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
    • 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
    • H04N19/527—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
    • H04N19/577—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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/96—Tree coding, e.g. quad-tree coding

Landscapes

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

Abstract

Esta divulgación describe el refinamiento de la predicción basada en gradientes. Un codificador de video (por ejemplo, codificador de video o decodificador de video) determina uno o más bloques de predicción para interpredecir un bloque actual (por ejemplo, basado en uno o más vectores de movimiento para el bloque actual). En el refinamiento de la predicción basada en gradientes, el codificador de video modifica una o más muestras del bloque de predicción en función de varios factores, como el desplazamiento en una dirección horizontal, el gradiente horizontal, un desplazamiento en la dirección vertical y un gradiente vertical. Esta divulgación proporciona un refinamiento de la predicción basada en gradientes donde un nivel de precisión del desplazamiento (por ejemplo, al menos uno de los desplazamientos horizontal o vertical) se unifica (por ejemplo, el mismo) para diferentes modos de predicción (por ejemplo, incluyendo un modo afín y un modo bidireccional de flujo óptico (BDOF)).
CONC2021/0015352A 2019-05-17 2021-11-16 Refinamiento de predicción basada en gradientes para codificación de video CO2021015352A2 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201962849352P 2019-05-17 2019-05-17
US16/874,057 US11317088B2 (en) 2019-05-17 2020-05-14 Gradient-based prediction refinement for video coding
PCT/US2020/033091 WO2020236568A1 (en) 2019-05-17 2020-05-15 Gradient-based prediction refinement for video coding

Publications (1)

Publication Number Publication Date
CO2021015352A2 true CO2021015352A2 (es) 2021-11-19

Family

ID=73230856

Family Applications (1)

Application Number Title Priority Date Filing Date
CONC2021/0015352A CO2021015352A2 (es) 2019-05-17 2021-11-16 Refinamiento de predicción basada en gradientes para codificación de video

Country Status (13)

Country Link
US (1) US11317088B2 (es)
EP (1) EP3970370A1 (es)
JP (1) JP2022533061A (es)
KR (1) KR20220009384A (es)
CN (1) CN113950839A (es)
BR (1) BR112021022331A2 (es)
CA (1) CA3137462A1 (es)
CO (1) CO2021015352A2 (es)
IL (1) IL287257B1 (es)
MX (1) MX2021014018A (es)
SG (1) SG11202111550WA (es)
TW (1) TW202101996A (es)
WO (1) WO2020236568A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10609423B2 (en) 2016-09-07 2020-03-31 Qualcomm Incorporated Tree-type coding for video coding
US11962796B2 (en) 2019-04-01 2024-04-16 Qualcomm Incorporated Gradient-based prediction refinement for video coding
KR20220061240A (ko) 2019-09-20 2022-05-12 텔레호낙티에볼라게트 엘엠 에릭슨(피유비엘) 시프트 동작들에 대한 양방향 광학 흐름 단순화를 이용한 비디오 인코딩 및/또는 디코딩 방법들 및 관련 장치
US20220337865A1 (en) * 2019-09-23 2022-10-20 Sony Group Corporation Image processing device and image processing method
WO2024083992A1 (en) * 2022-10-21 2024-04-25 Interdigital Ce Patent Holdings, Sas Low complexity motion refinement

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CN108541375B (zh) * 2016-02-03 2022-04-12 夏普株式会社 运动图像解码装置、运动图像编码装置、以及预测图像生成装置
EP3453178A1 (en) * 2016-05-06 2019-03-13 VID SCALE, Inc. Systems and methods for motion compensated residual prediction
US10277895B2 (en) * 2016-12-28 2019-04-30 Arris Enterprises Llc Adaptive unequal weight planar prediction
JP7036628B2 (ja) * 2017-03-10 2022-03-15 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 符号化装置、復号装置、符号化方法及び復号方法
US10477237B2 (en) * 2017-06-28 2019-11-12 Futurewei Technologies, Inc. Decoder side motion vector refinement in video coding
RU2763042C2 (ru) * 2017-07-03 2021-12-27 Вид Скейл, Инк. Прогнозирование компенсации движения на основе двунаправленного оптического потока
CA3070507A1 (en) * 2017-07-24 2019-01-31 Arris Enterprises Llc Intra mode jvet coding
JP2021520710A (ja) * 2018-04-06 2021-08-19 ヴィド スケール インコーポレイテッド 簡易化された勾配導出による双方向オプティカルフロー方法
US10986343B2 (en) * 2018-04-15 2021-04-20 Arris Enterprises Llc Reducing overhead for multiple-hypothesis temporal prediction

Also Published As

Publication number Publication date
SG11202111550WA (en) 2021-12-30
EP3970370A1 (en) 2022-03-23
US20200366889A1 (en) 2020-11-19
JP2022533061A (ja) 2022-07-21
BR112021022331A2 (pt) 2021-12-28
IL287257A (en) 2021-12-01
CA3137462A1 (en) 2020-11-26
US11317088B2 (en) 2022-04-26
TW202101996A (zh) 2021-01-01
MX2021014018A (es) 2021-12-10
WO2020236568A1 (en) 2020-11-26
IL287257B1 (en) 2024-04-01
KR20220009384A (ko) 2022-01-24
CN113950839A (zh) 2022-01-18

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