EP 1393573 A1 20040303 - METHODS AND DEVICES FOR ENCODING AND DECODING IMAGES USING NESTED MESHES, PROGRAMME, SIGNAL AND CORRESPONDING USES
Title (en)
METHODS AND DEVICES FOR ENCODING AND DECODING IMAGES USING NESTED MESHES, PROGRAMME, SIGNAL AND CORRESPONDING USES
Title (de)
VERFAHREN UND ANORDNUNGEN ZUR KODIERUNG UND DEKODIERUNG VON BILDERN MITTELS VERSCHACHTELTER MASCHEN, ENTSPRECHENDES PROGRAMM, ENTSPRECHENDES SIGNAL UND ENTSPRECHENDE VERWENDUNG
Title (fr)
PROCEDES ET DISPOSITIFS DE CODAGE ET DE DECODAGE D'IMAGES METTANT EN OEUVRE DES MAILLAGES EMBOITES, PROGRAMME, SIGNAL ET APPLICATION CORRESPONDANTS
Publication
Application
Priority
- FR 0201937 W 20020606
- FR 0107406 A 20010606
Abstract (en)
[origin: FR2825855A1] The method includes use of a hierarchical mesh which defines nested spaces, each corresponding to a decomposition level of the meshing. The process consists, at least at a decomposition level n (except at the first level), of delivering only image coefficients expressed in a base of functions defined in a space orthogonal to the spaced corresponding to the preceding decomposition level (n-1). The method for encoding a source image includes use of a hierarchical mesh which defines at least two nested spaces, each corresponding to a decomposition level of the meshing. The process consists, at least at a decomposition level n (except at the first level), of delivering only image coefficients expressed in a base of functions defined in a space orthogonal to the spaced corresponding to the preceding decomposition level (n-1). The functions are selected so that the image coefficients enable optimization for the decomposition level, n, of the data already transmitted for the preceding decomposition level, n-1. This produces a reconstructed image, representing the source image, with optimized restoration quality for the specific decomposition level, n.
IPC 1-7
IPC 8 full level
H04N 7/30 (2006.01); G06T 9/00 (2006.01); G06T 17/20 (2006.01); H03M 7/30 (2006.01); H04N 1/41 (2006.01); H04N 7/26 (2006.01)
CPC (source: EP KR US)
G06T 9/00 (2013.01 - KR); G06T 9/001 (2013.01 - EP US); G06T 17/20 (2013.01 - EP US); H03M 7/30 (2013.01 - KR); H04N 19/54 (2014.11 - EP US)
Citation (search report)
See references of WO 02100111A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
FR 2825855 A1 20021213; BR 0210204 A 20040427; CA 2449117 A1 20021212; CN 100367799 C 20080206; CN 1524383 A 20040825; EP 1393573 A1 20040303; JP 2004537887 A 20041216; JP 4350504 B2 20091021; KR 100856289 B1 20080903; KR 20040019012 A 20040304; MX PA03011235 A 20040324; US 2004218824 A1 20041104; US 7346219 B2 20080318; WO 02100111 A1 20021212
DOCDB simple family (application)
FR 0107406 A 20010606; BR 0210204 A 20020606; CA 2449117 A 20020606; CN 02813648 A 20020606; EP 02747512 A 20020606; FR 0201937 W 20020606; JP 2003501952 A 20020606; KR 20037016019 A 20031206; MX PA03011235 A 20020606; US 47990404 A 20040629