BR112021016896A2 - Codificador, decodificador e métodos correspondentes para predição inter - Google Patents
Codificador, decodificador e métodos correspondentes para predição interInfo
- Publication number
- BR112021016896A2 BR112021016896A2 BR112021016896A BR112021016896A BR112021016896A2 BR 112021016896 A2 BR112021016896 A2 BR 112021016896A2 BR 112021016896 A BR112021016896 A BR 112021016896A BR 112021016896 A BR112021016896 A BR 112021016896A BR 112021016896 A2 BR112021016896 A2 BR 112021016896A2
- Authority
- BR
- Brazil
- Prior art keywords
- optical flow
- prediction
- block
- parameter
- parameters
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 abstract 5
- 239000013598 vector Substances 0.000 abstract 3
- 230000002457 bidirectional effect Effects 0.000 abstract 1
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
- H04N19/513—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
- H04N19/107—Selection of coding mode or of prediction mode between spatial and temporal predictive coding, e.g. picture refresh
-
- 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
- H04N19/169—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
- H04N19/517—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
- H04N19/537—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
- H04N19/587—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal sub-sampling or interpolation, e.g. decimation or subsequent interpolation of pictures in a video sequence
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Image Analysis (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
codificador, decodificador e métodos correspondentes para predição inter. um método de predição de fluxo óptico bidirecional, que compreende: obter um par de vetores de movimento inicial para um bloco atual; obter um bloco de predição forward e backward de acordo com o vetor de movimento de avanço e um bloco de predição backward de acordo com o par de vetores de movimento inicial; calcular parâmetros de gradiente para uma amostra atual no bloco atual; obter pelo menos dois parâmetros de fluxo óptico de amostra, que compreendem um primeiro parâmetro e um segundo parâmetro, para a amostra atual com base nos parâmetros de gradiente; obter parâmetros de fluxo óptico de bloco com base em parâmetros de fluxo óptico de amostra de amostras no bloco atual, um dentre os parâmetros de fluxo óptico de bloco é obtido por uma operação que inclui multiplicar um valor do primeiro parâmetro e um valor de uma função sinal do segundo parâmetro, e a função sinal é uma função definida por partes com pelo menos três subintervalos; e obter um valor de predição do bloco atual.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IN201931009184 | 2019-03-08 | ||
| PCT/CN2020/077121 WO2020181997A1 (en) | 2019-03-08 | 2020-02-28 | An encoder, a decoder and corresponding methods for inter prediction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR112021016896A2 true BR112021016896A2 (pt) | 2021-11-03 |
Family
ID=72427687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112021016896A BR112021016896A2 (pt) | 2019-03-08 | 2020-02-28 | Codificador, decodificador e métodos correspondentes para predição inter |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US11968387B2 (pt) |
| EP (1) | EP3915262A4 (pt) |
| JP (1) | JP7303894B2 (pt) |
| KR (2) | KR20240000636A (pt) |
| CN (1) | CN113508592A (pt) |
| AU (1) | AU2020234595A1 (pt) |
| BR (1) | BR112021016896A2 (pt) |
| CA (1) | CA3131311A1 (pt) |
| MX (1) | MX2021010504A (pt) |
| WO (1) | WO2020181997A1 (pt) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113728639A (zh) * | 2019-04-30 | 2021-11-30 | 北京达佳互联信息技术有限公司 | 光流预测细化的方法和装置 |
| US11523109B2 (en) * | 2019-05-02 | 2022-12-06 | Tencent America LLC | Method and apparatus for improvements of affine prof |
| WO2021001220A1 (en) * | 2019-07-01 | 2021-01-07 | Interdigital Vc Holdings France, Sas | Bi-directional optical flow refinement of affine motion compensation |
| WO2021054886A1 (en) * | 2019-09-20 | 2021-03-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods of video encoding and/or decoding with bidirectional optical flow simplification on shift operations and related apparatus |
| KR20230070535A (ko) * | 2019-10-09 | 2023-05-23 | 베이징 다지아 인터넷 인포메이션 테크놀로지 컴퍼니 리미티드 | 광 흐름에 의한 예측 개선, 양방향 광 흐름 및 디코더 측 움직임 벡터 개선을 위한 방법들 및 장치들 |
| WO2023085759A1 (ko) * | 2021-11-09 | 2023-05-19 | 삼성전자 주식회사 | Ai를 이용하는 영상 부호화 장치 및 영상 복호화 장치, 및 이들에 의한 영상의 부호화 및 복호화 방법 |
| CN117915097A (zh) * | 2022-10-12 | 2024-04-19 | 维沃移动通信有限公司 | 帧内预测方法、装置及设备 |
| CN116127671B (zh) * | 2023-04-17 | 2023-06-23 | 四川奥凸环保科技有限公司 | 一种供水管网参数优化方法、***、设备和存储介质 |
| CN118101970A (zh) * | 2024-04-17 | 2024-05-28 | 哈尔滨师范大学 | 基于深度学习的冰雪项目场地监控图像高效通信方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI463878B (zh) | 2009-02-19 | 2014-12-01 | Sony Corp | Image processing apparatus and method |
| EP3332551A4 (en) * | 2015-09-02 | 2019-01-16 | MediaTek Inc. | METHOD AND APPARATUS FOR MOVEMENT COMPENSATION FOR VIDEO CODING BASED ON TECHNIQUES FOR OPERATIONAL RADIO RADIATION |
| US10375413B2 (en) | 2015-09-28 | 2019-08-06 | Qualcomm Incorporated | Bi-directional optical flow for video coding |
| KR102646890B1 (ko) * | 2015-10-13 | 2024-03-12 | 삼성전자주식회사 | 영상을 부호화 또는 복호화하는 방법 및 장치 |
| 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 |
| CN116866581A (zh) * | 2017-05-17 | 2023-10-10 | 株式会社Kt | 对视频解码和编码的方法以及存储压缩视频数据的装置 |
| WO2018230493A1 (ja) * | 2017-06-14 | 2018-12-20 | シャープ株式会社 | 動画像復号装置、動画像符号化装置、予測画像生成装置及び動きベクトル導出装置 |
| EP3649780A1 (en) | 2017-07-03 | 2020-05-13 | Vid Scale, Inc. | Motion-compensation prediction based on bi-directional optical flow |
| US11082716B2 (en) * | 2017-10-10 | 2021-08-03 | Electronics And Telecommunications Research Institute | Method and device using inter prediction information |
| EP3852372A4 (en) | 2018-09-14 | 2021-11-10 | Panasonic Intellectual Property Corporation of America | ENCODING DEVICE, DECODING DEVICE, ENCODING PROCESS AND DECODING PROCESS |
-
2020
- 2020-02-28 KR KR1020237043647A patent/KR20240000636A/ko not_active Application Discontinuation
- 2020-02-28 CA CA3131311A patent/CA3131311A1/en active Pending
- 2020-02-28 BR BR112021016896A patent/BR112021016896A2/pt unknown
- 2020-02-28 JP JP2021552986A patent/JP7303894B2/ja active Active
- 2020-02-28 WO PCT/CN2020/077121 patent/WO2020181997A1/en unknown
- 2020-02-28 KR KR1020217029164A patent/KR102616680B1/ko active IP Right Grant
- 2020-02-28 EP EP20770156.6A patent/EP3915262A4/en active Pending
- 2020-02-28 AU AU2020234595A patent/AU2020234595A1/en active Pending
- 2020-02-28 CN CN202080018505.4A patent/CN113508592A/zh active Pending
- 2020-02-28 MX MX2021010504A patent/MX2021010504A/es unknown
-
2021
- 2021-09-07 US US17/467,785 patent/US11968387B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20220014776A1 (en) | 2022-01-13 |
| CN113508592A (zh) | 2021-10-15 |
| JP2022524357A (ja) | 2022-05-02 |
| AU2020234595A1 (en) | 2021-09-09 |
| EP3915262A4 (en) | 2022-08-03 |
| EP3915262A1 (en) | 2021-12-01 |
| KR102616680B1 (ko) | 2023-12-20 |
| WO2020181997A1 (en) | 2020-09-17 |
| KR20210122854A (ko) | 2021-10-12 |
| JP7303894B2 (ja) | 2023-07-05 |
| KR20240000636A (ko) | 2024-01-02 |
| CA3131311A1 (en) | 2020-09-17 |
| US11968387B2 (en) | 2024-04-23 |
| MX2021010504A (es) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BR112021016896A2 (pt) | Codificador, decodificador e métodos correspondentes para predição inter | |
| BR112021006412A2 (pt) | método de predição intra e dispositivo | |
| BR112019005678A2 (pt) | método e aparelho para codificação e decodificação de imagem através de interprevisão | |
| BR112016015080A2 (pt) | Predição de vetor de bloco em codificação / decodificação de vídeo e imagem | |
| AR110354A2 (es) | Método y aparato de decodificación de imágenes | |
| BR112016006574A2 (pt) | predição de vetor de movimento temporal com base em unidade de subpredição (pu) em hevc e projeto de sub-pu em 3d-hevc | |
| BR112016006607B8 (pt) | Método e dispositivo para processamento de dados de vídeo, e memória legível por computador | |
| BR112021020933A2 (pt) | Codificador, decodificador e métodos correspondentes usando lista de fusão de ibc | |
| BR112016015369A2 (pt) | Dispositivo de computação, método e meio legível por computador para predizer e estimar vetor de bloco de valores de amostra reconstruídos dentro de uma área de sobreposição | |
| BR112016012617A2 (pt) | Estrutura para engenharia de tráfego em rede definida por software | |
| MX2020010515A (es) | Metodo de prediccion de imagen y aparato relacionado. | |
| CL2021000796A1 (es) | Método para codificación / decodificación de señal de imagen y dispositivo para lo mismo | |
| BR112018010664A2 (pt) | previsão de modelo linear com unidades de previsão não-quadradas em código de vídeo | |
| MX2021003042A (es) | Método y dispositivo de predicción de imagen. | |
| EP4307667A3 (en) | Motion vector precision in merge with motion vector difference mode | |
| BR112021025846A2 (pt) | Derivação de peso de amostra de croma para modo de partição geométrica | |
| BR112015000110A2 (pt) | método, aparelho e terminal de controle de fotografia | |
| BR112014012187A2 (pt) | determinação implícita e determinação implícita e explícita combinadas de imagem colocalizada para predição temporal | |
| BR112016002616A2 (pt) | método, sistema e mídia legível em computador não transitória | |
| BR112018008091A2 (pt) | método e terminal de assistência de navegação com base em compartilhamento de cena | |
| BR112018002224A2 (pt) | conversor de quadro de vídeo 2d para 3d | |
| BR112021022331A2 (pt) | Refinamento de predição baseado em gradiente para codificação de vídeo | |
| CL2021001126A1 (es) | Procedimiento de codificación y decodificación de señal de vídeo y aparato para ello | |
| BR112021006580A8 (pt) | Método de decodificação de imagem realizado por um aparelho de decodificação, método de codificação de imagem realizado por um aparelho de codificação e mídia de armazenamento legível por computador não transitória | |
| BR112016028954A8 (pt) | métodos de controle |