EP 1971962 A2 20080924 - METHOD FOR IDENTIFYING MARKED IMAGES BASED AT LEAST IN PART ON FREQUENCY DOMAIN COEFFICIENT DIFFERENCES
Title (en)
METHOD FOR IDENTIFYING MARKED IMAGES BASED AT LEAST IN PART ON FREQUENCY DOMAIN COEFFICIENT DIFFERENCES
Title (de)
VERFAHREN ZUM IDENTIFIZIEREN MARKIERTER BILDER MINDESTENS TEILWEISE AUF DER BASIS VON FREQUENZBEREICHSKOEFFIZIENTENDIFFERENZEN
Title (fr)
PROCEDE D'IDENTIFICATION D'IMAGES MARQUEES BASE AU MOINS EN PARTIE SUR DES DIFFERENCES DE COEFFICIENT DE DOMAINE DE FREQUENCE
Publication
Application
Priority
US 2006001393 W 20060113
Abstract (en)
[origin: WO2007086833A2] Briefly, in accordance with one embodiment, a method of identifying marked images based at least in part on frequency domain coefficient differences is disclosed.
IPC 8 full level
G06K 9/62 (2006.01)
CPC (source: EP)
G06V 20/80 (2022.01); H04N 1/32144 (2013.01); H04N 1/32154 (2013.01)
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
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
WO 2007086833 A2 20070802; WO 2007086833 A3 20090528; EP 1971962 A2 20080924; EP 1971962 A4 20110406; JP 2009527930 A 20090730; JP 4920045 B2 20120418
DOCDB simple family (application)
US 2006001393 W 20060113; EP 06718464 A 20060113; JP 2008550284 A 20060113