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Procedes et systemes utilisant de multiples filigranes

Info

Publication number
WO2001033495A1
WO2001033495A1 PCT/US2000/029454 US0029454W WO2001033495A1 WO 2001033495 A1 WO2001033495 A1 WO 2001033495A1 US 0029454 W US0029454 W US 0029454W WO 2001033495 A1 WO2001033495 A1 WO 2001033495A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
document
watermarks
watermark
original
wear
Prior art date
Application number
PCT/US2000/029454
Other languages
English (en)
Inventor
Geoffrey B. Rhoads
Ammon E. Gustafson
Original Assignee
Digimarc Corporation
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

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00General purpose image data processing
    • G06T1/0021Image watermarking
    • G06T1/005Robust watermarking, e.g. average attack or collusion attack resistant
    • G06T1/0071Robust watermarking, e.g. average attack or collusion attack resistant using multiple or alternating watermarks
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/0002Inspection of images, e.g. flaw detection
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00005Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to image data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026Methods therefor
    • H04N1/00037Detecting, i.e. determining the occurrence of a predetermined state
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00092Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to the original or to the reproducing medium, e.g. imperfections or dirt
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device
    • H04N1/32101Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32288Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
    • H04N1/32304Embedding different sets of additional information
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00General purpose image data processing
    • G06T2201/005Image watermarking
    • G06T2201/0083Image watermarking whereby only watermarked image required at decoder, e.g. source-based, blind, oblivious

Abstract

Au moins deux filigranes numériques présentant des caractéristiques numériques sont intégrés à un document (10). Les caractéristiques sont choisies de sorte que les filigranes subissent des altérations de différentes sortes si le document fait l'objet d'une copie ou d'une reproduction ultérieure. Le processus ou le mécanisme de détection permet la lecture d'au moins deux filigranes et la comparaison de leurs caractéristiques. Alors que l'usure et la manipulation (11) peuvent modifier les caractéristiques des filigranes numériques d'un document, la relation entre les caractéristiques de multiples filigranes numériques d'un document permet cependant de donner une indication sur le fait qu'un document est un original ou une copie d'original (10B). L'usure d'un document peut être évaluée de manière indépendante et utilisée comme un élément facilitant l'interprétation des caractéristiques de filigranes détectés.
PCT/US2000/029454 1999-01-20 2000-10-25 Procedes et systemes utilisant de multiples filigranes WO2001033495A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US23478099 true 1999-01-20 1999-01-20
US09/433,104 1999-11-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20000973864 EP1264268A1 (fr) 1999-01-20 2000-10-25 Procedes et systemes utilisant de multiples filigranes

Publications (1)

Publication Number Publication Date
WO2001033495A1 true true WO2001033495A1 (fr) 2001-05-10

Family

ID=22882800

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/029454 WO2001033495A1 (fr) 1999-01-20 2000-10-25 Procedes et systemes utilisant de multiples filigranes

Country Status (1)

Country Link
WO (1) WO2001033495A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5617119A (en) * 1994-06-08 1997-04-01 Systems Research & Applications Corporation Protection of an electronically stored image in a first color space by the alteration of a digital component in a second color space
US5664018A (en) * 1996-03-12 1997-09-02 Leighton; Frank Thomson Watermarking process resilient to collusion attacks
US5687236A (en) * 1995-06-07 1997-11-11 The Dice Company Steganographic method and device
US5825892A (en) * 1996-10-28 1998-10-20 International Business Machines Corporation Protecting images with an image watermark
US5862218A (en) * 1996-04-04 1999-01-19 Fotonation, Inc. Method and apparatus for in-camera image marking and authentication
US5933798A (en) * 1996-07-16 1999-08-03 U.S. Philips Corporation Detecting a watermark embedded in an information signal
US5974548A (en) * 1996-07-12 1999-10-26 Novell, Inc. Media-independent document security method and apparatus

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5617119A (en) * 1994-06-08 1997-04-01 Systems Research & Applications Corporation Protection of an electronically stored image in a first color space by the alteration of a digital component in a second color space
US5893101A (en) * 1994-06-08 1999-04-06 Systems Research & Applications Corporation Protection of an electronically stored image in a first color space by the alteration of digital component in a second color space
US5687236A (en) * 1995-06-07 1997-11-11 The Dice Company Steganographic method and device
US5664018A (en) * 1996-03-12 1997-09-02 Leighton; Frank Thomson Watermarking process resilient to collusion attacks
US5862218A (en) * 1996-04-04 1999-01-19 Fotonation, Inc. Method and apparatus for in-camera image marking and authentication
US5974548A (en) * 1996-07-12 1999-10-26 Novell, Inc. Media-independent document security method and apparatus
US5933798A (en) * 1996-07-16 1999-08-03 U.S. Philips Corporation Detecting a watermark embedded in an information signal
US5825892A (en) * 1996-10-28 1998-10-20 International Business Machines Corporation Protecting images with an image watermark

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