EP 3272122 A1 20180124 - ENCODING OF IMAGES BY VECTOR QUANTIZATION
Title (en)
ENCODING OF IMAGES BY VECTOR QUANTIZATION
Title (de)
CODIERUNG VON BILDERN DURCH VEKTORQUANTISIERUNG
Title (fr)
CODAGE D'IMAGES PAR QUANTIFICATION VECTORIELLE
Publication
Application
Priority
- FR 1551420 A 20150219
- FR 2016050373 W 20160218
Abstract (en)
[origin: WO2016132074A1] The invention relates to encoding of at least one image (ICj). Said encoding implements, for a common block (Bu) to be coded for said image: - predicting (C3) the common block according to a prediction procedure selected from among a plurality of predetermined prediction procedures ; - obtaining a predictor block (BPopt) from the prediction; - calculating (C4) a first set of data representing a comparison between the predictor block obtained and the common block; - comparing (C5) said calculated first set with a plurality of quantization vectors; - selecting (C6) one of said vectors according to a predetermined encoding performance criterion; - encoding (C7) an index associated with the selected vector; - calculating (C8) a second set of data representing a comparison between the first calculated data set and the selected vector; and - encoding (C9) the second calculated data set. During said encoding, at least one of said quantization vectors is modified on the basis of the data from the second calculated data set.
IPC 8 full level
H04N 19/176 (2014.01); H04N 19/126 (2014.01); H04N 19/137 (2014.01); H04N 19/15 (2014.01); H04N 19/94 (2014.01)
CPC (source: CN EP KR US)
H04N 19/105 (2014.11 - KR US); H04N 19/124 (2014.11 - US); H04N 19/126 (2014.11 - CN EP KR US); H04N 19/137 (2014.11 - CN EP US); H04N 19/15 (2014.11 - CN EP KR US); H04N 19/176 (2014.11 - CN EP KR US); H04N 19/94 (2014.11 - CN EP US); H04N 19/593 (2014.11 - EP US); H04N 19/61 (2014.11 - EP US)
Citation (search report)
See references of WO 2016132074A1
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 2016132074 A1 20160825; CN 107343391 A 20171110; EP 3272122 A1 20180124; FR 3033114 A1 20160826; KR 20170120634 A 20171031; US 2018070109 A1 20180308
DOCDB simple family (application)
FR 2016050373 W 20160218; CN 201680010673 A 20160218; EP 16718390 A 20160218; FR 1551420 A 20150219; KR 20177026321 A 20160218; US 201615551804 A 20160218