EP4449722A1 - Prédiction de signes pour codage vidéo basé sur un bloc - Google Patents
Prédiction de signes pour codage vidéo basé sur un blocInfo
- Publication number
- EP4449722A1 EP4449722A1 EP22908485.0A EP22908485A EP4449722A1 EP 4449722 A1 EP4449722 A1 EP 4449722A1 EP 22908485 A EP22908485 A EP 22908485A EP 4449722 A1 EP4449722 A1 EP 4449722A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transform coefficients
- sign
- candidate
- video
- transform
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
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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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
- H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
-
- 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
- H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
- H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
-
- 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
- H04N19/124—Quantisation
-
- 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
- H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
-
- 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
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
-
- 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
- H04N19/10—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
- H04N19/18—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 a set of transform coefficients
-
- 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
- H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
-
- 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
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Discrete Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Les modes de réalisation de la divulgation concernent un appareil de décodage vidéo et un procédé de prédiction de signes de coefficients de transformée sur un côté décodeur vidéo. Le procédé peut consister à recevoir un train de bits comprenant une séquence de bits de signalisation de signe pour un ensemble de coefficients de transformée candidats. Le procédé peut en outre consister à générer, par un processeur d'un décodeur, un ensemble de signes prédits pour l'ensemble de coefficients de transformée candidats associés à un bloc de transformée d'une trame vidéo à partir d'une vidéo. Le procédé peut également consister à décoder, par le processeur, la séquence de bits de signalisation de signe sur la base d'un ou de plusieurs contextes utilisés pour coder par entropie la séquence de bits de signalisation de signe pour obtenir une indication d'exactitude des signes prédits des coefficients de transformée candidats respectifs. Le procédé peut en outre consister à estimer, par le processeur, des signes d'origine pour l'ensemble de coefficients de transformée candidats sur la base de l'ensemble de signes prédits et de la séquence décodée de bits de signalisation de signe.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202163290307P | 2021-12-16 | 2021-12-16 | |
| PCT/US2022/040442 WO2023023039A1 (fr) | 2021-08-17 | 2022-08-16 | Prédiction de signes pour codage vidéo basé sur des blocs |
| PCT/US2022/043607 WO2023043885A1 (fr) | 2021-09-15 | 2022-09-15 | Prédiction de signes pour codage vidéo basé sur un bloc |
| PCT/US2022/049264 WO2023086330A1 (fr) | 2021-11-10 | 2022-11-08 | Prédiction de signes pour codage vidéo basé sur un bloc |
| PCT/US2022/053150 WO2023114468A1 (fr) | 2021-12-16 | 2022-12-16 | Prédiction de signes pour codage vidéo basé sur un bloc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4449722A1 true EP4449722A1 (fr) | 2024-10-23 |
Family
ID=86773504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22908485.0A Pending EP4449722A1 (fr) | 2021-12-16 | 2022-12-16 | Prédiction de signes pour codage vidéo basé sur un bloc |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4449722A1 (fr) |
| KR (1) | KR20240125959A (fr) |
| MX (1) | MX2024007341A (fr) |
| WO (1) | WO2023114468A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107529708B (zh) * | 2011-06-16 | 2019-05-07 | Ge视频压缩有限责任公司 | 解码器、编码器、解码和编码视频的方法及存储介质 |
| EP3100235B1 (fr) * | 2014-01-31 | 2020-02-19 | Sony Corporation | Procédé optimisé d'estimation de la direction de gradient dominant d'une zone d'image numérique |
| US9380312B2 (en) * | 2014-07-14 | 2016-06-28 | Apple Inc. | Encoding blocks in video frames containing text using histograms of gradients |
| US20190208225A1 (en) * | 2018-01-02 | 2019-07-04 | Qualcomm Incorporated | Sign prediction in video coding |
| US11695960B2 (en) * | 2019-06-14 | 2023-07-04 | Qualcomm Incorporated | Transform and last significant coefficient position signaling for low-frequency non-separable transform in video coding |
-
2022
- 2022-12-16 EP EP22908485.0A patent/EP4449722A1/fr active Pending
- 2022-12-16 MX MX2024007341A patent/MX2024007341A/es unknown
- 2022-12-16 KR KR1020247023641A patent/KR20240125959A/ko unknown
- 2022-12-16 WO PCT/US2022/053150 patent/WO2023114468A1/fr active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240125959A (ko) | 2024-08-20 |
| MX2024007341A (es) | 2024-06-26 |
| WO2023114468A1 (fr) | 2023-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |