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 computadorInfo
- 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
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)
- Image Processing (AREA)
- Television Systems (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Complex Calculations (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.
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)
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 |
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 |
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 |
EP2425563A1 (en) | 2009-05-01 | 2012-03-07 | 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)
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 |
EP0981900A2 (en) * | 1998-03-04 | 2000-03-01 | Koninklijke Philips Electronics N.V. | Watermark detection |
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 |
ATE312472T1 (de) * | 2001-02-13 | 2005-12-15 | Koninkl Philips Electronics Nv | Bildsignalwasserzeichendetektionssystem und verfahren |
US7167574B2 (en) * | 2002-03-14 | 2007-01-23 | Seiko Epson Corporation | Method and apparatus for content-based image copy detection |
-
2003
- 2003-07-07 DE DE60308686T patent/DE60308686T2/de not_active Expired - Fee Related
- 2003-07-07 WO PCT/IB2003/003095 patent/WO2004010376A1/en active IP Right Grant
- 2003-07-07 AU AU2003281648A patent/AU2003281648A1/en not_active Abandoned
- 2003-07-07 AT AT03740978T patent/ATE341043T1/de not_active IP Right Cessation
- 2003-07-07 JP JP2004522629A patent/JP2005534053A/ja not_active Withdrawn
- 2003-07-07 US US10/521,660 patent/US20060156002A1/en not_active Abandoned
- 2003-07-07 BR BR0305626-0A patent/BR0305626A/pt not_active IP Right Cessation
- 2003-07-07 CN CN03817711.0A patent/CN1672172A/zh active Pending
- 2003-07-07 EP EP03740978A patent/EP1525557B1/en not_active Expired - Lifetime
- 2003-07-07 RU RU2005104835/09A patent/RU2005104835A/ru not_active Application Discontinuation
- 2003-07-07 ES ES03740978T patent/ES2270060T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1525557A1 (en) | 2005-04-27 |
US20060156002A1 (en) | 2006-07-13 |
DE60308686T2 (de) | 2007-08-16 |
ES2270060T3 (es) | 2007-04-01 |
AU2003281648A1 (en) | 2004-02-09 |
JP2005534053A (ja) | 2005-11-10 |
CN1672172A (zh) | 2005-09-21 |
ATE341043T1 (de) | 2006-10-15 |
RU2005104835A (ru) | 2005-07-20 |
EP1525557B1 (en) | 2006-09-27 |
DE60308686D1 (de) | 2006-11-09 |
WO2004010376A1 (en) | 2004-01-29 |
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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. |