EP 1929782 A4 20120321 - METHOD AND APPARATUS FOR ENHANCING PERFORMANCE OF ENTROPY CODING, AND VIDEO CODING METHOD AND APPARATUS USING THE ENTROPY CODING PERFORMANCE ENHANCING METHOD
Title (en)
METHOD AND APPARATUS FOR ENHANCING PERFORMANCE OF ENTROPY CODING, AND VIDEO CODING METHOD AND APPARATUS USING THE ENTROPY CODING PERFORMANCE ENHANCING METHOD
Title (de)
VERFAHREN UND VORRICHTUNG ZUR ERHÖHUNG DER LEISTUNG BEI DER ENTROPIEKODIERUNG SOWIE VIDEOKODIERUNGSVERFAHREN UND VORRICHTUNG ZUR ANWENDUNG DES VERFAHRENS ZUR ERHÖHUNG DER LEISTUNG BEI DER ENTROPIEKODIERUNG
Title (fr)
PROCEDE ET APPAREIL D'AMELIORATION DE L'EFFICACITE DU CODAGE ENTROPIQUE ET PROCEDE DE CODAGE VIDEO, ET APPAREIL UTILISANT CE PROCEDE
Publication
Application
Priority
- KR 2006003812 W 20060925
- US 71996705 P 20050926
- KR 20060003321 A 20060111
Abstract (en)
[origin: WO2007035070A1] A method and apparatus for enhancing the performance of entropy coding in a multilayer-based codec system are provided. In a variable length coding method for lossless-coding first coefficients among coefficients of a discrete layer and one or more fine granular scalability (FGS) layers, the variable length coding method includes determining a proportion of zeros included in a predetermined unit region to which the first coefficients belong, selecting one of a plurality of grouping units depending on whether or not the proportion exceeds a predetermined threshold, grouping absolute values of the first coefficients using the selected grouping unit, and transforming the grouped absolute values into a code word mapped thereto by referring to a VLC table corresponding to the selected group unit.
IPC 8 full level
CPC (source: EP)
H04N 19/136 (2014.11); H04N 19/184 (2014.11); H04N 19/187 (2014.11); H04N 19/34 (2014.11); H04N 19/61 (2014.11); H04N 19/625 (2014.11); H04N 19/13 (2014.11)
Citation (search report)
- [A] ANONYMOUS: "H.264 and MPEG-4 Video Compression, chapter 6, H.264/MPEG4 Part 10, Iain E. Richardson", NOT KNOWN,, 17 October 2003 (2003-10-17), XP030001626
- [XP] LEE B K: "VLC for 8x8 transform FGS", 17. JVT MEETING; 74. MPEG MEETING; 14-10-2005 - 21-10-2005; NICE, FR;(JOINT VIDEO TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ),, no. JVT-Q057, 11 October 2005 (2005-10-11), XP030006218, ISSN: 0000-0413
- See references of WO 2007035070A1
Citation (examination)
- US 2003202601 A1 20031030 - BJONTEGAARD GISLE [NO], et al
- SHIMA M: "CE1: Complexity reduction for adaptive VLC", 18. JVT MEETING; 75. MPEG MEETING; 14-01-2006 - 20-01-2006; BANGKOK,TH; (JOINT VIDEO TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ),, no. JVT-R021, 10 January 2006 (2006-01-10), XP030006289, ISSN: 0000-0410
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 2007035070 A1 20070329; EP 1929782 A1 20080611; EP 1929782 A4 20120321; JP 2009506710 A 20090212
DOCDB simple family (application)
KR 2006003812 W 20060925; EP 06798895 A 20060925; JP 2008528961 A 20060925