MX2021008157A - Control del ancho de bits para el flujo optico bidireccional. - Google Patents
Control del ancho de bits para el flujo optico bidireccional.Info
- Publication number
- MX2021008157A MX2021008157A MX2021008157A MX2021008157A MX2021008157A MX 2021008157 A MX2021008157 A MX 2021008157A MX 2021008157 A MX2021008157 A MX 2021008157A MX 2021008157 A MX2021008157 A MX 2021008157A MX 2021008157 A MX2021008157 A MX 2021008157A
- Authority
- MX
- Mexico
- Prior art keywords
- reference picture
- prediction
- optical flow
- directional optical
- bit
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title abstract 2
- 238000003079 width control Methods 0.000 title 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
- H04N19/10—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
- H04N19/50—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
-
- 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
- H04N19/176—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
-
- 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
Un método para controlar el ancho de bits para el flujo óptico bidireccional (BDOF) para la codificación de video incluye decodificar una primera imagen de referencia y una segunda imagen de referencia, la segunda imagen de referencia es diferente a la primera imagen de referencia, en donde la primera imagen de referencia se visualiza antes de una imagen actual y la segunda imagen de referencia se visualiza después de la imagen actual. Un refinamiento de movimiento de una unidad de codificación (CU) se calcula al minimizar una diferencia entre la primera predicción L0 y la segunda predicción L1. Se calculan los primeros valores de gradiente para la primera predicción L0 y segundos valores de gradiente para la segunda predicción L1. Se calcula una bi-predicción final de la CU. También se da a conocer un aparato asociado y un medio de almacenamiento no transitorio y legible por computadora asociado.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201962788898P | 2019-01-06 | 2019-01-06 | |
| PCT/US2020/012338 WO2020142762A1 (en) | 2019-01-06 | 2020-01-06 | Bit-width control for bi-directional optical flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX2021008157A true MX2021008157A (es) | 2022-07-19 |
Family
ID=71406635
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2021008157A MX2021008157A (es) | 2019-01-06 | 2020-01-06 | Control del ancho de bits para el flujo optico bidireccional. |
| MX2022008296A MX2022008296A (es) | 2019-01-06 | 2021-07-02 | Control del ancho de bits para el flujo optico bidireccional. |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2022008296A MX2022008296A (es) | 2019-01-06 | 2021-07-02 | Control del ancho de bits para el flujo optico bidireccional. |
Country Status (7)
| Country | Link |
|---|---|
| US (4) | US11388436B2 (es) |
| EP (1) | EP3891990A4 (es) |
| JP (2) | JP7474262B2 (es) |
| KR (2) | KR20220025301A (es) |
| CN (5) | CN116668717B (es) |
| MX (2) | MX2021008157A (es) |
| WO (1) | WO2020142762A1 (es) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020084476A1 (en) | 2018-10-22 | 2020-04-30 | Beijing Bytedance Network Technology Co., Ltd. | Sub-block based prediction |
| WO2020084475A1 (en) | 2018-10-22 | 2020-04-30 | Beijing Bytedance Network Technology Co., Ltd. | Utilization of refined motion vector |
| EP3857879A4 (en) | 2018-11-12 | 2022-03-16 | Beijing Bytedance Network Technology Co., Ltd. | SIMPLIFICATION OF COMBINED INTER-INTRA PREDICTION |
| WO2020103877A1 (en) | 2018-11-20 | 2020-05-28 | Beijing Bytedance Network Technology Co., Ltd. | Coding and decoding of video coding modes |
| KR20210091161A (ko) | 2018-11-20 | 2021-07-21 | 베이징 바이트댄스 네트워크 테크놀로지 컴퍼니, 리미티드 | 부분적 위치에 기반한 차분 계산 |
| CN116668717B (zh) * | 2019-01-06 | 2024-03-15 | 北京达佳互联信息技术有限公司 | 视频编码方法、计算设备和介质 |
| KR102635518B1 (ko) | 2019-03-06 | 2024-02-07 | 베이징 바이트댄스 네트워크 테크놀로지 컴퍼니, 리미티드 | 변환된 단예측 후보의 사용 |
| KR20220112864A (ko) | 2019-03-15 | 2022-08-11 | 베이징 다지아 인터넷 인포메이션 테크놀로지 컴퍼니 리미티드 | 양방향 광 흐름을 위한 비트-폭 제어를 위한 방법 및 디바이스 |
| KR20230169434A (ko) * | 2019-04-02 | 2023-12-15 | 베이징 바이트댄스 네트워크 테크놀로지 컴퍼니, 리미티드 | 디코더 측 움직임 벡터 유도 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10412387B2 (en) * | 2014-08-22 | 2019-09-10 | Qualcomm Incorporated | Unified intra-block copy and inter-prediction |
| US10178403B2 (en) * | 2015-06-23 | 2019-01-08 | Qualcomm Incorporated | Reference picture list construction in intra block copy mode |
| US20180249172A1 (en) * | 2015-09-02 | 2018-08-30 | Mediatek Inc. | Method and apparatus of motion compensation for video coding based on bi prediction optical flow techniques |
| US10375413B2 (en) | 2015-09-28 | 2019-08-06 | Qualcomm Incorporated | Bi-directional optical flow for video coding |
| EP3413563A4 (en) * | 2016-02-03 | 2019-10-23 | Sharp Kabushiki Kaisha | DEVICE FOR DECODING MOVEMENT PICTURES, APPARATUS FOR CODING MOVEMENT IMAGES AND DEVICE FOR GENERATING FORECAST PICTURES |
| WO2017138417A1 (ja) | 2016-02-08 | 2017-08-17 | シャープ株式会社 | 動きベクトル生成装置、予測画像生成装置、動画像復号装置、および動画像符号化装置。 |
| US10798385B2 (en) | 2016-04-25 | 2020-10-06 | Lg Electronics Inc. | Inter-prediction method and apparatus in image coding system |
| WO2017205700A1 (en) * | 2016-05-25 | 2017-11-30 | Arris Enterprises Llc | Binary, ternary and quad tree partitioning for jvet coding of video data |
| US10728572B2 (en) * | 2016-09-11 | 2020-07-28 | Lg Electronics Inc. | Method and apparatus for processing video signal by using improved optical flow motion vector |
| US10986367B2 (en) * | 2016-11-04 | 2021-04-20 | Lg Electronics Inc. | Inter prediction mode-based image processing method and apparatus therefor |
| WO2018113658A1 (en) | 2016-12-22 | 2018-06-28 | Mediatek Inc. | Method and apparatus of motion refinement for video coding |
| CN110476424B (zh) * | 2017-03-16 | 2022-03-04 | 联发科技股份有限公司 | 一种视频编解码方法及装置 |
| CN117425006A (zh) * | 2017-03-22 | 2024-01-19 | 韩国电子通信研究院 | 使用参考块的预测方法和装置 |
| KR102409430B1 (ko) | 2017-04-24 | 2022-06-15 | 에스케이텔레콤 주식회사 | 움직임 보상을 위한 옵티컬 플로우 추정 방법 및 장치 |
| 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 |
| KR102580910B1 (ko) * | 2017-08-29 | 2023-09-20 | 에스케이텔레콤 주식회사 | 양방향 옵티컬 플로우를 이용한 움직임 보상 방법 및 장치 |
| US10785494B2 (en) * | 2017-10-11 | 2020-09-22 | Qualcomm Incorporated | Low-complexity design for FRUC |
| WO2019139013A1 (ja) | 2018-01-09 | 2019-07-18 | シャープ株式会社 | 動きベクトル導出装置、動画像復号装置および動画像符号化装置 |
| US11310526B2 (en) * | 2018-01-26 | 2022-04-19 | Mediatek Inc. | Hardware friendly constrained motion vector refinement |
| CN116668717B (zh) * | 2019-01-06 | 2024-03-15 | 北京达佳互联信息技术有限公司 | 视频编码方法、计算设备和介质 |
| WO2020264221A1 (en) * | 2019-06-25 | 2020-12-30 | Beijing Dajia Internet Information Technology Co., Ltd. | Apparatuses and methods for bit-width control of bi-directional optical flow |
-
2020
- 2020-01-06 CN CN202310792031.4A patent/CN116668717B/zh active Active
- 2020-01-06 CN CN202080008094.0A patent/CN113261296A/zh active Pending
- 2020-01-06 KR KR1020227005801A patent/KR20220025301A/ko active Application Filing
- 2020-01-06 JP JP2021539434A patent/JP7474262B2/ja active Active
- 2020-01-06 CN CN202310875061.1A patent/CN116708772B/zh active Active
- 2020-01-06 EP EP20736085.0A patent/EP3891990A4/en active Pending
- 2020-01-06 KR KR1020217020929A patent/KR102374687B1/ko active IP Right Grant
- 2020-01-06 CN CN202311209752.4A patent/CN117221528B/zh active Active
- 2020-01-06 WO PCT/US2020/012338 patent/WO2020142762A1/en unknown
- 2020-01-06 MX MX2021008157A patent/MX2021008157A/es unknown
- 2020-01-06 CN CN202110985012.4A patent/CN113613019B/zh active Active
-
2021
- 2021-07-02 MX MX2022008296A patent/MX2022008296A/es unknown
- 2021-07-06 US US17/368,468 patent/US11388436B2/en active Active
-
2022
- 2022-04-21 US US17/726,523 patent/US11743493B2/en active Active
- 2022-12-16 JP JP2022201624A patent/JP2023030062A/ja active Pending
-
2023
- 2023-07-06 US US18/219,089 patent/US20230353780A1/en active Pending
- 2023-08-28 US US18/239,122 patent/US20230403408A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN116668717A (zh) | 2023-08-29 |
| WO2020142762A1 (en) | 2020-07-09 |
| CN113261296A (zh) | 2021-08-13 |
| EP3891990A1 (en) | 2021-10-13 |
| JP2022516751A (ja) | 2022-03-02 |
| CN117221528B (zh) | 2024-05-14 |
| CN113613019A (zh) | 2021-11-05 |
| MX2022008296A (es) | 2022-08-08 |
| CN117221528A (zh) | 2023-12-12 |
| KR20210088013A (ko) | 2021-07-13 |
| CN116708772B (zh) | 2024-01-23 |
| JP7474262B2 (ja) | 2024-04-24 |
| CN116668717B (zh) | 2024-03-15 |
| CN116708772A (zh) | 2023-09-05 |
| US20230353780A1 (en) | 2023-11-02 |
| EP3891990A4 (en) | 2022-06-15 |
| KR20220025301A (ko) | 2022-03-03 |
| US20230403408A1 (en) | 2023-12-14 |
| US11743493B2 (en) | 2023-08-29 |
| US20210344952A1 (en) | 2021-11-04 |
| CN113613019B (zh) | 2022-06-07 |
| US20220248050A1 (en) | 2022-08-04 |
| KR102374687B1 (ko) | 2022-03-14 |
| JP2023030062A (ja) | 2023-03-07 |
| US11388436B2 (en) | 2022-07-12 |
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