EP 1145562 A1 20011017 - IMPROVED CASCADED COMPRESSION METHOD AND SYSTEM FOR DIGITAL VIDEO AND IMAGES
Title (en)
IMPROVED CASCADED COMPRESSION METHOD AND SYSTEM FOR DIGITAL VIDEO AND IMAGES
Title (de)
VERBESSERTES CASCADEN-KOMPRESSIONSVERFAHREN UND -SYSTEM FÜR DIGITALE VIDEODATEN UND BILDER
Title (fr)
PROCEDE ET SYSTEME AMELIORES DE COMPRESSION EN CASCADE DESTINE A LA VIDEO ET AUX IMAGES NUMERIQUES
Publication
Application
Priority
- EP 0010158 W 20001013
- US 43350799 A 19991103
Abstract (en)
[origin: WO0133860A1] A system and method are disclosed for reducing quantization error in a system using a cascaded compression scheme. An expected quantization error introduced by the cascaded compression scheme is determined. The expected quantization errors based upon two or more second or higher stage test quantizers are then compared. Based on this comparison, a quantizer for the second or higher stage of compression is selected to reduce and/or minimize the quantization error caused by the cascaded compression scheme.
IPC 1-7
IPC 8 full level
H04N 19/124 (2014.01); G06F 17/18 (2006.01); H03M 7/30 (2006.01); H04N 1/41 (2006.01); H04N 7/26 (2006.01); H04N 7/30 (2006.01); H04N 7/50 (2006.01)
CPC (source: EP KR)
H04N 19/124 (2014.11 - KR); H04N 19/40 (2014.11 - EP)
Citation (search report)
See references of WO 0133860A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0133860 A1 20010510; CN 1186940 C 20050126; CN 1342369 A 20020327; EP 1145562 A1 20011017; JP 2003513563 A 20030408; KR 100744442 B1 20070801; KR 20010089765 A 20011008
DOCDB simple family (application)
EP 0010158 W 20001013; CN 00804549 A 20001013; EP 00967876 A 20001013; JP 2001534882 A 20001013; KR 20017008507 A 20010703