Title (en)

METHOD OF CODING WAVELET-CODED IMAGES WITH DATA RATE CONTROL AND CORRESPONDING CODING DEVICE AND COMPUTER PROGRAM

Title (de)

VERFAHREN ZUR CODIERUNG VON WAVELET-CODIERTEN BILDERN MIT DATENRATEN-STEUERUNG UND ENTSPRECHENDE CODIERUNGSEINRICHTUNG UND COMPUTERPROGRAMM

Title (fr)

PROCEDE DE CODAGE D'IMAGES CODEES PAR ONDELETTES A CONTROLE DE DEBIT, DISPOSITIF DE CODAGE ET PROGRAMME D'ORDINATEUR CORRESPONDANTS

Publication

EP 1812903 A1 20070801 (FR)

Application

EP 05801394 A 20051107

Priority

• EP 2005055797 W 20051107
• FR 0412336 A 20041119

Abstract (en)

[origin: WO2006053842A1] The invention relates to a method of coding at least one still or animated image, in which said image is associated with (i) a basic mesh formed by a set of faces that are defined by a set of vertices and edges and (ii) coefficients in a base of wavelets corresponding to local modifications to the basic mesh, known as wavelet coefficients, wherein the coded data rate is controlled. The inventive method comprises the following steps consisting in: controlling a first rate of data representative of a basic mesh that meets a first rate criterion; controlling a second rate of data representative of wavelet coefficients according to a second rate criterion; and finally optimising the coded data rate by controlling the quantification characteristics of the selected wavelet coefficients.

IPC 8 full level

G06T 9/00 (2006.01); H04N 7/26 (2006.01)

CPC (source: EP US)

G06T 9/001 (2013.01 - EP US); G06T 9/007 (2013.01 - EP US); H04N 19/147 (2014.11 - EP US)

Citation (search report)

See references of WO 2006053842A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

FR 2878396 A1 20060526; EP 1812903 A1 20070801; US 2008240251 A1 20081002; WO 2006053842 A1 20060526

DOCDB simple family (application)

FR 0412336 A 20041119; EP 05801394 A 20051107; EP 2005055797 W 20051107; US 79113405 A 20051107