EP 1118218 A4 20040825 - APPARATUS AND METHOD FOR FORMING A CODING UNIT
Title (en)
APPARATUS AND METHOD FOR FORMING A CODING UNIT
Title (de)
GERAET UND VERFAHREN ZUR BILDUNG EINER KODIEREINHEIT
Title (fr)
DISPOSITIF ET PROCEDE DE FORMATION D'UNE UNITE DE CODAGE
Publication
Application
Priority
- US 9922889 W 19991001
- US 10308198 P 19981005
- US 12360099 P 19990310
Abstract (en)
[origin: WO0021291A1] An apparatus (200) and a method for forming a data structure that improves error resilience when applied to the coding of hierarchical subband decomposed coefficients, e.g., wavelet transform coefficients. The texture unit (320) is defined as comprising only those AC transform coefficients that are located in one or more slices in a single subband. The texture unit (320) is defined as comprising only those AC transform coefficients that are across "n" subband, where "n" is smaller than the total number of "N" levels of decomposition. A texture unit (320) can also be defined as comprising only those bits from the DC transform coefficients that form a single bitplane.
IPC 1-7
IPC 8 full level
H04N 5/92 (2006.01); H03M 7/30 (2006.01); H04N 7/26 (2006.01); H04N 7/30 (2006.01); H04N 7/52 (2011.01)
CPC (source: EP)
H04N 19/186 (2014.11); H04N 19/61 (2014.11); H04N 19/63 (2014.11); H04N 19/647 (2014.11); H04N 19/66 (2014.11); H04N 19/68 (2014.11); H04N 19/70 (2014.11); H04N 19/10 (2014.11); H04N 19/13 (2014.11); H04N 19/65 (2014.11); H04N 19/89 (2014.11)
Citation (search report)
- [A] GB 2281465 A 19950301 - SONY UK LTD [GB]
- [A] EP 0797358 A2 19970924 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] GB 2295936 A 19960612 - MICROSOFT CORP [US]
- [E] WO 0054511 A2 20000914 - CONEXANT SYSTEMS INC [US]
- [X] KARLSSON G ET AL: "SUBBAND CODING OF VIDEO FOR PACKET NETWORKS", OPTICAL ENGINEERING, SOC. OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS. BELLINGHAM, US, vol. 27, no. 7, 1 July 1988 (1988-07-01), pages 574 - 586, XP000069873, ISSN: 0091-3286
- [PX] MOCCAGATTA I ET AL: "Robust image compression with packetization: the MPEG-4 still texture case", MULTIMEDIA SIGNAL PROCESSING, 1998 IEEE SECOND WORKSHOP ON REDONDO BEACH, CA, USA 7-9 DEC. 1998, PISCATAWAY, NJ, USA,IEEE, US, 7 December 1998 (1998-12-07), pages 462 - 467, XP010318304, ISBN: 0-7803-4919-9
- See references of WO 0021291A1
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
WO 0021291 A1 20000413; WO 0021291 A8 20000720; AU 1704700 A 20000426; EP 1118218 A1 20010725; EP 1118218 A4 20040825; JP 2002527956 A 20020827
DOCDB simple family (application)
US 9922889 W 19991001; AU 1704700 A 19991001; EP 99960111 A 19991001; JP 2000575301 A 19991001