MX2022010825A - Método de predicción de imágenes, codificador, decodificador y medio de almacenamiento. - Google Patents
Método de predicción de imágenes, codificador, decodificador y medio de almacenamiento.Info
- Publication number
- MX2022010825A MX2022010825A MX2022010825A MX2022010825A MX2022010825A MX 2022010825 A MX2022010825 A MX 2022010825A MX 2022010825 A MX2022010825 A MX 2022010825A MX 2022010825 A MX2022010825 A MX 2022010825A MX 2022010825 A MX2022010825 A MX 2022010825A
- Authority
- MX
- Mexico
- Prior art keywords
- value
- prediction
- image block
- gradient
- decoder
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 230000002457 bidirectional effect Effects 0.000 abstract 3
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
- H04N19/577—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
- H04N19/109—Selection of coding mode or of prediction mode among a plurality of temporal predictive coding modes
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)
Abstract
Se describe un método de predicción imágenes, un codificador, un decodificador y un medio de almacenamiento; el método comprende: realizar un cálculo de movimiento en un bloque de imágenes a codificar y determinar valores de predicción unidireccionales, respectivamente correspondientes a dos direcciones de predicción, del bloque de imágenes; determinar un parámetro de gradiente correspondiente al bloque de imágenes en el que el parámetro de gradiente comprende al menos un valor indicador de gradiente y un valor de índice de dirección de gradiente; calcular el valor de gradiente del bloque de imágenes usando el parámetro de gradiente determinado y los valores de predicción unidireccionales correspondientes respectivamente a las dos direcciones de predicción; y corregir un valor de predicción bidireccional inicial de acuerdo con el valor de gradiente del bloque de cuadros y un valor de intensidad de corrección preestablecido para obtener un valor de predicción bidireccional del bloque de imágenes, en el que el valor de predicción bidireccional inicial es una suma ponderada de los valores de predicción unidireccional respectivamente correspondientes a las dos direcciones de predicción.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/077491 WO2021174396A1 (zh) | 2020-03-02 | 2020-03-02 | 图像预测方法、编码器、解码器以及存储介质 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX2022010825A true MX2022010825A (es) | 2022-11-08 |
Family
ID=77614434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX2022010825A MX2022010825A (es) | 2020-03-02 | 2020-03-02 | Método de predicción de imágenes, codificador, decodificador y medio de almacenamiento. |
Country Status (4)
| Country | Link |
|---|---|
| CN (2) | CN116647698A (es) |
| MX (1) | MX2022010825A (es) |
| WO (1) | WO2021174396A1 (es) |
| ZA (1) | ZA202209981B (es) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011126309A2 (ko) * | 2010-04-06 | 2011-10-13 | 삼성전자 주식회사 | 비디오 부호화 방법 및 장치, 비디오 복호화 방법 및 장치 |
| 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 |
| CN116112687A (zh) * | 2016-07-14 | 2023-05-12 | 三星电子株式会社 | 视频解码方法及其装置以及视频编码方法及其装置 |
| WO2018169099A1 (ko) * | 2017-03-13 | 2018-09-20 | 엘지전자(주) | 인터 예측 모드 기반 영상 처리 방법 및 이를 위한 장치 |
| WO2018166357A1 (en) * | 2017-03-16 | 2018-09-20 | Mediatek Inc. | Method and apparatus of motion refinement based on bi-directional optical flow for video coding |
-
2020
- 2020-03-02 CN CN202310064906.9A patent/CN116647698A/zh active Pending
- 2020-03-02 WO PCT/CN2020/077491 patent/WO2021174396A1/zh active Application Filing
- 2020-03-02 MX MX2022010825A patent/MX2022010825A/es unknown
- 2020-03-02 CN CN202080097798.XA patent/CN115211116A/zh active Pending
-
2022
- 2022-09-07 ZA ZA2022/09981A patent/ZA202209981B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN116647698A (zh) | 2023-08-25 |
| ZA202209981B (en) | 2023-05-31 |
| CN115211116A (zh) | 2022-10-18 |
| WO2021174396A1 (zh) | 2021-09-10 |
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