BR9907105A - Técnicas de marcas d'água múltiplas - Google Patents

Técnicas de marcas d'água múltiplas

Info

Publication number
BR9907105A
BR9907105A BR9907105-3A BR9907105A BR9907105A BR 9907105 A BR9907105 A BR 9907105A BR 9907105 A BR9907105 A BR 9907105A BR 9907105 A BR9907105 A BR 9907105A
Authority
BR
Brazil
Prior art keywords
document
watermarks
original
digital watermarks
multiple watermark
Prior art date
Application number
BR9907105-3A
Other languages
English (en)
Inventor
Geoffrey Rhoads
Ammon Gustafson
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
Application filed by Digimarc Corp filed Critical Digimarc Corp
Publication of BR9907105A publication Critical patent/BR9907105A/pt

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00005—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for relating to image data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00026—Methods therefor
    • H04N1/00037—Detecting, i.e. determining the occurrence of a predetermined state
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00002—Diagnosis, testing or measuring; Detecting, analysing or monitoring not otherwise provided for
    • H04N1/00092—Diagnosis, 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, 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
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, 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
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32288—Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
    • H04N1/32304—Embedding different sets of additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, 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
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32309—Methods relating to embedding, encoding, decoding, detection or retrieval operations in colour image data
    • 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
    • G06T2201/0061—Embedding of the watermark in each block of the image, e.g. segmented watermarking

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Quality & Reliability (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Television Systems (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)

Abstract

"TéCNICAS DE MARCAS D'áGUA MúLTIPLAS" Trata-se de marcas d'água digitais múltiplas, sendo que cada uma das quais tem características diferentes, e são embutidas em um documento. As características das diversas marcas d'água são escolhidas de tal modo que cada uma das marcas d'água será afetada de uma maneira diferente se o documento for subseq³entemente copiado e reproduzido. O processo ou o mecanismo de detecção lê cada uma das marcas d'água e compara suas características. Embora o desgaste e o manuseio possam alterar as características das marcas d'água digitais em um documento, a relação entre a característica de marcas d'água múltiplas em um documento, não obstante, dará uma indicação quanto a se um documento é um original ou uma cópia de um original.
BR9907105-3A 1998-01-20 1999-01-20 Técnicas de marcas d'água múltiplas BR9907105A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7198398P 1998-01-20 1998-01-20
PCT/US1999/001296 WO1999036876A2 (en) 1998-01-20 1999-01-20 Multiple watermarking techniques

Publications (1)

Publication Number Publication Date
BR9907105A true BR9907105A (pt) 2002-04-30

Family

ID=22104832

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9907105-3A BR9907105A (pt) 1998-01-20 1999-01-20 Técnicas de marcas d'água múltiplas

Country Status (11)

Country Link
US (1) US6332031B1 (pt)
EP (1) EP1050005B1 (pt)
JP (1) JP2003529225A (pt)
AT (1) ATE372559T1 (pt)
AU (1) AU747372B2 (pt)
BR (1) BR9907105A (pt)
CA (2) CA2318564C (pt)
DE (1) DE69937044T2 (pt)
HK (1) HK1032464A1 (pt)
IL (1) IL137370A0 (pt)
WO (1) WO1999036876A2 (pt)

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CA2318564C (en) 2009-07-21
DE69937044D1 (de) 2007-10-18
DE69937044T2 (de) 2008-01-03
EP1050005A4 (en) 2001-07-18
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