BR0305626A - Método e arranjo para detectar uma marca d'água em um sinal, e, produto de programa de computador - Google Patents

Método e arranjo para detectar uma marca d'água em um sinal, e, produto de programa de computador

Info

Publication number
BR0305626A
BR0305626A BR0305626-0A BR0305626A BR0305626A BR 0305626 A BR0305626 A BR 0305626A BR 0305626 A BR0305626 A BR 0305626A BR 0305626 A BR0305626 A BR 0305626A
Authority
BR
Brazil
Prior art keywords
signal
watermark
sequences
sub
detecting
Prior art date
Application number
BR0305626-0A
Other languages
English (en)
Inventor
Alphons Antonius Mari Bruekers
Jaap Andre Haitsma
Minne Van Der Veen
Antonius Adrianus Corne Kalker
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BR0305626A publication Critical patent/BR0305626A/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
    • 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
    • G06T2201/0052—Embedding of the watermark in the frequency domain
    • 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
    • G06T2201/0065—Extraction of an embedded watermark; Reliable detection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Analysis (AREA)
  • Burglar Alarm Systems (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Complex Calculations (AREA)
  • Image Processing (AREA)
  • Television Systems (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

"MéTODO E ARRANJO PARA DETECTAR UMA MARCA D'AGUA EM UM SINAL, E, PRODUTO DE PROGRAMA DE COMPUTADOR". Um método de detecção de marca d'água é exposto, que é baseado em computar a correlação cruzada entre um sinal suspeito e uma marca d'água. A fim de ser mais robusto contra componentes de sinal dominantes prolongados que adversamente afetam a correlação, a seq³ência de amostras de sinal (61) a ser correlatada com a marca d'água é dividida em sub-seq³ências (A(k)). As sub-seq³ências são processadas, por uma função de ponderação, para obter sub-seq³ências modificadas (B(k)) que individualmente exibem as variações de sinal originais, mas coletivamente (62) exibem uma distribuição mais plana de valores de amostra. Picos dominantes no sinal são por esse meio substancialmente reduzidos.
BR0305626-0A 2002-07-22 2003-07-07 Método e arranjo para detectar uma marca d'água em um sinal, e, produto de programa de computador BR0305626A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02077982 2002-07-22
PCT/IB2003/003095 WO2004010376A1 (en) 2002-07-22 2003-07-07 Watermark detection

Publications (1)

Publication Number Publication Date
BR0305626A true BR0305626A (pt) 2004-10-19

Family

ID=30470297

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0305626-0A BR0305626A (pt) 2002-07-22 2003-07-07 Método e arranjo para detectar uma marca d'água em um sinal, e, produto de programa de computador

Country Status (11)

Country Link
US (1) US20060156002A1 (pt)
EP (1) EP1525557B1 (pt)
JP (1) JP2005534053A (pt)
CN (1) CN1672172A (pt)
AT (1) ATE341043T1 (pt)
AU (1) AU2003281648A1 (pt)
BR (1) BR0305626A (pt)
DE (1) DE60308686T2 (pt)
ES (1) ES2270060T3 (pt)
RU (1) RU2005104835A (pt)
WO (1) WO2004010376A1 (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1887565A1 (fr) 2006-07-11 2008-02-13 France Telecom Procédé et dispositif de détection d'un identificateur de tatouage dans un signal audio
US9466307B1 (en) 2007-05-22 2016-10-11 Digimarc Corporation Robust spectral encoding and decoding methods
US8359205B2 (en) 2008-10-24 2013-01-22 The Nielsen Company (Us), Llc Methods and apparatus to perform audio watermarking and watermark detection and extraction
US9667365B2 (en) 2008-10-24 2017-05-30 The Nielsen Company (Us), Llc Methods and apparatus to perform audio watermarking and watermark detection and extraction
AU2010242814B2 (en) 2009-05-01 2014-07-31 The Nielsen Company (Us), Llc Methods, apparatus and articles of manufacture to provide secondary content in association with primary broadcast media content
EP2362387A1 (en) * 2010-02-26 2011-08-31 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Watermark generator, watermark decoder, method for providing a watermark signal in dependence on binary message data, method for providing binary message data in dependence on a watermarked signal and computer program using a differential encoding
EP2362386A1 (en) * 2010-02-26 2011-08-31 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Watermark generator, watermark decoder, method for providing a watermark signal in dependence on binary message data, method for providing binary message data in dependence on a watermarked signal and computer program using a two-dimensional bit spreading
EP2565667A1 (en) 2011-08-31 2013-03-06 Friedrich-Alexander-Universität Erlangen-Nürnberg Direction of arrival estimation using watermarked audio signals and microphone arrays
CN107995500B (zh) * 2017-10-27 2019-01-01 北京达佳互联信息技术有限公司 视频水印识别方法、装置及终端

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6185312B1 (en) * 1997-01-28 2001-02-06 Nippon Telegraph And Telephone Corporation Method for embedding and reading watermark-information in digital form, and apparatus thereof
CN1153456C (zh) * 1998-03-04 2004-06-09 皇家菲利浦电子有限公司 水印检测的方法和设备
US6731774B1 (en) * 1998-11-30 2004-05-04 Sony Corporation Associated information adding apparatus and method, and associated information detecting apparatus and method
GB9914567D0 (en) * 1999-06-22 1999-08-25 Thames Water Utilities Correlation analysis in the phase domain
JP3659321B2 (ja) * 2000-06-29 2005-06-15 インターナショナル・ビジネス・マシーンズ・コーポレーション 電子透かし方法およびそのシステム
EP1362474B1 (en) * 2001-02-13 2005-12-07 Koninklijke Philips Electronics N.V. Method and apparatus for detecting a watermark in an information signal
US7167574B2 (en) * 2002-03-14 2007-01-23 Seiko Epson Corporation Method and apparatus for content-based image copy detection

Also Published As

Publication number Publication date
JP2005534053A (ja) 2005-11-10
WO2004010376A1 (en) 2004-01-29
ES2270060T3 (es) 2007-04-01
US20060156002A1 (en) 2006-07-13
AU2003281648A1 (en) 2004-02-09
EP1525557B1 (en) 2006-09-27
ATE341043T1 (de) 2006-10-15
DE60308686T2 (de) 2007-08-16
RU2005104835A (ru) 2005-07-20
EP1525557A1 (en) 2005-04-27
CN1672172A (zh) 2005-09-21
DE60308686D1 (de) 2006-11-09

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A ANUIDADE

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 DA RPI 2047 DE 30/03/2010.