BR112018003653A2 - método e dispositivo para predição de imagem - Google Patents

método e dispositivo para predição de imagem

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Publication number
BR112018003653A2
BR112018003653A2 BR112018003653-6A BR112018003653A BR112018003653A2 BR 112018003653 A2 BR112018003653 A2 BR 112018003653A2 BR 112018003653 A BR112018003653 A BR 112018003653A BR 112018003653 A2 BR112018003653 A2 BR 112018003653A2
Authority
BR
Brazil
Prior art keywords
unit
reference unit
prediction
image
movement information
Prior art date
Application number
BR112018003653-6A
Other languages
English (en)
Chinese (zh)
Other versions
BR112018003653B1 (pt
Inventor
Lv Zhuoyi
Li Li
Li Houqiang
Yang Haitao
Original Assignee
Huawei Technologies Co., Ltd.
University Of Science And Technology Of China
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.)
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Publication date
Application filed by Huawei Technologies Co., Ltd., University Of Science And Technology Of China filed Critical Huawei Technologies Co., Ltd.
Priority to BR122020023963-8A priority Critical patent/BR122020023963B1/pt
Priority to BR122020023970-0A priority patent/BR122020023970B1/pt
Publication of BR112018003653A2 publication Critical patent/BR112018003653A2/pt
Publication of BR112018003653B1 publication Critical patent/BR112018003653B1/pt

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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
    • H04N19/50—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
    • 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
    • H04N19/134—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
    • H04N19/169—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
    • 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
    • H04N19/527—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

Abstract

um método e dispositivo para predição de imagem são revelados. o método inclui: obter (s1200) uma primeira unidade de referência de uma unidade de imagem, onde imagens preditas respectivas são obtidas para a unidade de imagem e a primeira unidade de referência usando um mesmo modelo afim; obter (s1300) a informação de movimento das unidades de compensação do movimento básico em duas ou mais posições preestabelecidas na primeira unidade de referência e obter (s1400) informação de movimento de uma unidade de compensação de movimento básico da unidade de imagem de acordo com a informação de movimento. dessa maneira, a informação de movimento da primeira unidade de referência usando um mesmo modelo de predição de movimento afim é reutilizada e um vetor de movimento mais preciso de uma unidade de imagem atual é obtido, melhorando a precisão da predição e mantendo as complexidades da codificação e da decodificação, por meio disso melhorando o desempenho da codificação e da decodificação.
BR112018003653-6A 2015-08-29 2015-12-31 Método de predição de imagem e dispositivo de predição de imagem BR112018003653B1 (pt)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR122020023963-8A BR122020023963B1 (pt) 2015-08-29 2015-12-31 Método para inter-predição de um bloco de imagem atual, codificador e decodificador
BR122020023970-0A BR122020023970B1 (pt) 2015-08-29 2015-12-31 Método para inter-predição de um bloco de imagem atual e decodificador

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201510543542.8A CN105163116B (zh) 2015-08-29 2015-08-29 图像预测的方法及设备
CN201510543542.8 2015-08-29
PCT/CN2015/100091 WO2017036045A1 (zh) 2015-08-29 2015-12-31 图像预测的方法及设备

Publications (2)

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BR112018003653A2 true BR112018003653A2 (pt) 2018-09-25
BR112018003653B1 BR112018003653B1 (pt) 2024-03-12

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BR122020023970-0A BR122020023970B1 (pt) 2015-08-29 2015-12-31 Método para inter-predição de um bloco de imagem atual e decodificador
BR122020023963-8A BR122020023963B1 (pt) 2015-08-29 2015-12-31 Método para inter-predição de um bloco de imagem atual, codificador e decodificador
BR112018003653-6A BR112018003653B1 (pt) 2015-08-29 2015-12-31 Método de predição de imagem e dispositivo de predição de imagem

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BR122020023970-0A BR122020023970B1 (pt) 2015-08-29 2015-12-31 Método para inter-predição de um bloco de imagem atual e decodificador
BR122020023963-8A BR122020023963B1 (pt) 2015-08-29 2015-12-31 Método para inter-predição de um bloco de imagem atual, codificador e decodificador

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US (3) US10880543B2 (pt)
EP (2) EP3331242B1 (pt)
JP (2) JP6669855B2 (pt)
KR (4) KR102408278B1 (pt)
CN (3) CN108965869B (pt)
AU (5) AU2015407876B2 (pt)
BR (3) BR122020023970B1 (pt)
DK (1) DK3331242T3 (pt)
ES (1) ES2946901T3 (pt)
FI (1) FI3331242T3 (pt)
HR (1) HRP20230509T1 (pt)
HU (1) HUE063094T2 (pt)
LT (1) LT3331242T (pt)
MX (3) MX2021003042A (pt)
PL (1) PL3331242T3 (pt)
PT (1) PT3331242T (pt)
RU (3) RU2714362C2 (pt)
SG (3) SG11201800920QA (pt)
SI (1) SI3331242T1 (pt)
WO (1) WO2017036045A1 (pt)
ZA (2) ZA202109389B (pt)

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