EP1264268A1 - Procedes et systemes utilisant de multiples filigranes - Google Patents

Procedes et systemes utilisant de multiples filigranes

Info

Publication number
EP1264268A1
EP1264268A1 EP00973864A EP00973864A EP1264268A1 EP 1264268 A1 EP1264268 A1 EP 1264268A1 EP 00973864 A EP00973864 A EP 00973864A EP 00973864 A EP00973864 A EP 00973864A EP 1264268 A1 EP1264268 A1 EP 1264268A1
Authority
EP
European Patent Office
Prior art keywords
document
watermarks
watermark
original
wear
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00973864A
Other languages
German (de)
English (en)
Inventor
Geoffrey B. Rhoads
Ammon E. Gustafson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digimarc Corp
Original Assignee
Digimarc Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/433,104 external-priority patent/US6636615B1/en
Application filed by Digimarc Corp filed Critical Digimarc Corp
Priority claimed from PCT/US2000/029454 external-priority patent/WO2001033495A1/fr
Publication of EP1264268A1 publication Critical patent/EP1264268A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0021—Image watermarking
    • G06T1/005—Robust watermarking, e.g. average attack or collusion attack resistant
    • G06T1/0071—Robust watermarking, e.g. average attack or collusion attack resistant using multiple or alternating watermarks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00—General purpose image data processing
    • G06T2201/005—Image watermarking
    • G06T2201/0083—Image watermarking whereby only watermarked image required at decoder, e.g. source-based, blind, oblivious
EP00973864A 1999-01-20 2000-10-25 Procedes et systemes utilisant de multiples filigranes Withdrawn EP1264268A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US23478099A 1999-01-20 1999-01-20
US433104 1999-11-03
US09/433,104 US6636615B1 (en) 1998-01-20 1999-11-03 Methods and systems using multiple watermarks
PCT/US2000/029454 WO2001033495A1 (fr) 1999-01-20 2000-10-25 Procedes et systemes utilisant de multiples filigranes

Publications (1)

Publication Number Publication Date
EP1264268A1 true EP1264268A1 (fr) 2002-12-11

Family

ID=23718865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00973864A Withdrawn EP1264268A1 (fr) 1999-01-20 2000-10-25 Procedes et systemes utilisant de multiples filigranes

Country Status (2)

Country Link
EP (1) EP1264268A1 (fr)
AU (1) AU1232001A (fr)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0133495A1 *

Also Published As

Publication number Publication date
AU1232001A (en) 2001-05-14

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