EP 3854090 A1 20210728 - METHODS AND DEVICES FOR CODING AND DECODING A DATA STREAM REPRESENTING AT LEAST ONE IMAGE
Title (en)
METHODS AND DEVICES FOR CODING AND DECODING A DATA STREAM REPRESENTING AT LEAST ONE IMAGE
Title (de)
VERFAHREN UND VORRICHTUNGEN ZUR CODIERUNG UND DECODIERUNG EINES DATENSTROMS, DER MINDESTENS EIN BILD REPRÄSENTIERT
Title (fr)
PROCÉDÉS ET DISPOSITIFS DE CODAGE ET DE DÉCODAGE D'UN FLUX DE DONNÉES REPRÉSENTATIF D'AU MOINS UNE IMAGE
Publication
Application
Priority
- FR 1858571 A 20180921
- FR 2019052028 W 20190903
Abstract (en)
[origin: WO2020058594A1] The invention relates to a method for decoding a stream of encoded data representing at least one image that is split into blocks. For at least one block of the image, called the current block, it is determined whether the size of the current block is less than or equal to a predetermined threshold. If the size of the current block is less than or equal to the predetermined threshold, the method comprises decoding (E42) a piece of information indicating a coding mode of the current block among a first coding mode and a second coding mode, and reconstructing the current block according to the coding mode indicated by said piece of information, and otherwise reconstructing the current block according to the first coding mode. The first coding mode corresponds to a coding mode according to which the current block is reconstructed (E436) using an inverse transformation of a transformed prediction remainder decoded for the current block, and the second coding mode corresponds to a coding mode according to which the current block is reconstructed (E444), for each pixel of the current block, by obtaining a prediction of said pixel based on another previously decoded pixel belonging to the current block or to a previously decoded block of the image, and reconstructing said pixel based on the prediction obtained and on a decoded prediction remainder associated with said pixel.
IPC 8 full level
H04N 19/176 (2014.01); H04N 19/11 (2014.01); H04N 19/182 (2014.01); H04N 19/34 (2014.01); H04N 19/593 (2014.01)
CPC (source: EP KR US)
H04N 19/11 (2014.11 - EP KR); H04N 19/119 (2014.11 - KR US); H04N 19/136 (2014.11 - US); H04N 19/176 (2014.11 - EP KR US); H04N 19/182 (2014.11 - EP KR); H04N 19/34 (2014.11 - EP KR); H04N 19/593 (2014.11 - EP KR); H04N 19/60 (2014.11 - KR); H04N 19/61 (2014.11 - US)
Citation (examination)
"High Efficiency Video Coding (HEVC)", 23 August 2014, SPRINGER INTERNATIONAL PUBLISHING, Cham, ISBN: 978-3-319-06894-7, article HEIKO SCHWARZ ET AL: "Chapter 3: Block Structures and Parallelism Features in HEVC", pages: 49 - 90, XP055614176, DOI: 10.1007/978-3-319-06895-4__3
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020058594 A1 20200326; BR 112021003632 A2 20210518; CN 112740691 A 20210430; CN 112740691 B 20240730; CN 118972600 A 20241115; EP 3854090 A1 20210728; FR 3086485 A1 20200327; JP 2022501909 A 20220106; JP 7556849 B2 20240926; KR 20210062635 A 20210531; US 11616958 B2 20230328; US 2021377541 A1 20211202; US 2023199193 A1 20230622
DOCDB simple family (application)
FR 2019052028 W 20190903; BR 112021003632 A 20190903; CN 201980061935 A 20190903; CN 202410919214 A 20190903; EP 19786368 A 20190903; FR 1858571 A 20180921; JP 2021515493 A 20190903; KR 20217008165 A 20190903; US 201917277972 A 20190903; US 202318171934 A 20230221