KR20020071925A - 정보 신호 내에 워터마크를 삽입하기 위한 방법 및 장치 - Google Patents
정보 신호 내에 워터마크를 삽입하기 위한 방법 및 장치 Download PDFInfo
- Publication number
- KR20020071925A KR20020071925A KR1020027008781A KR20027008781A KR20020071925A KR 20020071925 A KR20020071925 A KR 20020071925A KR 1020027008781 A KR1020027008781 A KR 1020027008781A KR 20027008781 A KR20027008781 A KR 20027008781A KR 20020071925 A KR20020071925 A KR 20020071925A
- Authority
- KR
- South Korea
- Prior art keywords
- watermark
- sub
- information signal
- pattern
- local
- 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.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
- G06T1/0028—Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0081—Image watermarking whereby both original and watermarked images are required at decoder, e.g. destination-based, non-blind, non-oblivious
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2201/00—General purpose image data processing
- G06T2201/005—Image watermarking
- G06T2201/0202—Image watermarking whereby the quality of watermarked images is measured; Measuring quality or performance of watermarking methods; Balancing between quality and robustness
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
- Television Systems (AREA)
Abstract
Description
Claims (8)
- 정보 신호(P) 내에 워터마크(W)를 삽입하기 위한 방법에 있어서,상기 워터마크 패턴(W)으로부터 서브-패턴들(Wi)을 유도하는 단계로서, 각각의 서브-패턴들(Wi)의 에너지 스펙트럼 집중은 현저한 방위(a dominant orientation)를 갖는, 상기 유도하는 단계;상기 현저한 방위의 정보 신호(P)의 지역 에너지 스펙트럼(local energy spectrum)에 기초하여 상기 워터마크 서브-패턴들(Wi)에 대한 지역 가중 계수들(λ(P))을 결정하는 단계;상기 결정된 지역 가중 계수들(λ(P))에 기초하여 상기 워터마크 서브-패턴들(Wi)을 지역적으로 가중하는 단계; 및지역적으로 가중된 워터마크 서브-패턴들(Wi)을 상기 정보 신호(P)에 부가하는 단계를 포함하는, 워터마크 삽입 방법.
- 제 1 항에 있어서,상기 워터마크 서브-패턴들(Wi)에 대한 지역 가중 계수들(λ(P))의 상기 결정은 상기 현저한 방위의 정보 신호(P)의 지역 공간적 에너지 스펙트럼에 기초하는, 워터마크 삽입 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 지역 가중 계수들(λ(P))은 상기 정보 신호의 활동(activity)에 기초하여 더 결정되는, 워터마크 삽입 방법.
- 제 1 항에 있어서,상기 워터마크(W)의 상기 서브-패턴들(Wi)은 0-위상 컨벌루션들(zero-phase convolution)에 의해 얻어지는, 워터마크 삽입 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 서브-패턴들(Wi)의 합은 상기 워터마크(W)와 대략 동일한, 워터마크 삽입 방법.
- 정보 신호내에 워터마크(W)를 삽입하기 위한 장치(arrangement)에 있어서,상기 워터마크 패턴(W)으로부터 서브-패턴들(Wi)을 유도하기 위한 유도 수단(30)으로서, 각각의 서브-패턴들(Wi)의 에너지 스펙트럼 집중은 현저한 방위를 갖는, 상기 유도 수단;상기 현저한 방위의 정보 신호(P)의 지역 에너지 스펙트럼(local energyspectrum)에 기초하여 상기 워터마크 서브-패턴들(Wi)에 대한 지역 가중 계수들(λ(P))을 결정하기 위한 결정 수단(16);상기 결정된 지역 가중 계수들(λ(P))에 기초하여 상기 워터마크 서브-패턴들(Wi)을 지역적으로 가중하기 위한 가중 수단(17); 및지역적으로 가중된 워터마크 서브-패턴들(Wi)을 상기 정보 신호(P)에 부가하기 위한 부가 수단(12)을 포함하는, 워터마크를 삽입하기 위한 장치.
- 삽입된 워터마크(W)를 갖는 정보 신호에 있어서,상기 워터마크(W)는 상기 정보 신호내에 삽입되며,서브-패턴들(Wi)은 상기 워터마크 패턴(W)으로부터 유도되며, 각각의 서브-패턴(Wi)의 에너지 스펙트럼 집중은 현저한 방위를 가지며,상기 워터마크 서브-패턴들(Wi)에 대한 지역 가중 계수들(λ(P))은 상기 현저한 방위의 정보 신호(P)의 지역 에너지 스펙트럼(local energy spectrum)에 기초하여 결정되며,상기 워터마크 서브-패턴들(Wi)은 상기 결정된 지역 가중 계수들(λ(P))에 기초하여 지역적으로 가중되며; 및지역적으로 가중된 워터마크 서브-패턴들(Wi)은 상기 정보 신호(P)에 부가되는, 워터마크 삽입된 정보 신호.
- 삽입된 워터마크(W)를 갖는 정보 신호가 그 위에 저장된 저장 매체(50)에 있어서,상기 워터마크(W)는 상기 정보 신호내에 삽입되며,서브-패턴들(Wi)은 상기 워터마크 패턴(W)으로부터 유도되며, 각각의 서브-패턴(Wi)의 에너지 스펙트럼 집중은 현저한 방위를 가지며,상기 워터마크 서브-패턴들(Wi)에 대한 지역 가중 계수들(λ(P))은 상기 현저한 방위의 정보 신호(P)의 지역 에너지 스펙트럼(local energy spectrum)에 기초하여 결정되며,상기 워터마크 서브-패턴들(Wi)은 상기 결정된 지역 가중 계수들(λ(P))에 기초하여 지역적으로 가중되며; 및지역적으로 가중된 워터마크 서브-패턴들(Wi)은 상기 정보 신호(P)에 부가되는, 저장 매체.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00203894.1 | 2000-11-07 | ||
| EP00203894 | 2000-11-07 | ||
| PCT/EP2001/012749 WO2002039384A1 (en) | 2000-11-07 | 2001-10-29 | Method and arrangement for embedding a watermark in an information signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20020071925A true KR20020071925A (ko) | 2002-09-13 |
Family
ID=8172232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020027008781A Ceased KR20020071925A (ko) | 2000-11-07 | 2001-10-29 | 정보 신호 내에 워터마크를 삽입하기 위한 방법 및 장치 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6707930B2 (ko) |
| EP (1) | EP1336161A1 (ko) |
| JP (1) | JP3898128B2 (ko) |
| KR (1) | KR20020071925A (ko) |
| CN (1) | CN1237484C (ko) |
| WO (1) | WO2002039384A1 (ko) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100692527B1 (ko) * | 2005-10-12 | 2007-03-09 | 한국전자통신연구원 | 워터마크 삽입을 위한 인간시각시스템용 마스킹모델생성방법 |
| KR20220099304A (ko) * | 2021-01-06 | 2022-07-13 | 스냅태그 주식회사 | 워터마크 데이터의 임베딩 및 추출 방법 |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6633654B2 (en) * | 2000-06-19 | 2003-10-14 | Digimarc Corporation | Perceptual modeling of media signals based on local contrast and directional edges |
| US6879652B1 (en) * | 2000-07-14 | 2005-04-12 | Nielsen Media Research, Inc. | Method for encoding an input signal |
| US7346776B2 (en) | 2000-09-11 | 2008-03-18 | Digimarc Corporation | Authenticating media signals by adjusting frequency characteristics to reference values |
| US20030026453A1 (en) * | 2000-12-18 | 2003-02-06 | Sharma Ravi K. | Repetition coding of error correction coded messages in auxiliary data embedding applications |
| US20020191812A1 (en) * | 2001-04-24 | 2002-12-19 | Nam-Deuk Kim | Object edge watermarking |
| JP3861623B2 (ja) * | 2001-06-05 | 2006-12-20 | ソニー株式会社 | 電子透かし埋め込み処理装置、および電子透かし埋め込み処理方法、並びにプログラム |
| US20030131350A1 (en) | 2002-01-08 | 2003-07-10 | Peiffer John C. | Method and apparatus for identifying a digital audio signal |
| US7567721B2 (en) * | 2002-01-22 | 2009-07-28 | Digimarc Corporation | Digital watermarking of low bit rate video |
| US20040003394A1 (en) * | 2002-07-01 | 2004-01-01 | Arun Ramaswamy | System for automatically matching video with ratings information |
| US7577841B2 (en) * | 2002-08-15 | 2009-08-18 | Digimarc Corporation | Watermark placement in watermarking of time varying media signals |
| NZ539596A (en) * | 2002-10-23 | 2008-11-28 | Nielsen Media Res Inc | Digital data insertion apparatus and methods for use with compressed audio/video data |
| US7460684B2 (en) * | 2003-06-13 | 2008-12-02 | Nielsen Media Research, Inc. | Method and apparatus for embedding watermarks |
| AU2003279935A1 (en) * | 2003-08-29 | 2005-04-14 | Nielsen Media Research, Inc. | Methods and apparatus for embedding and recovering an image for use with video content |
| CA2562137C (en) * | 2004-04-07 | 2012-11-27 | Nielsen Media Research, Inc. | Data insertion apparatus and methods for use with compressed audio/video data |
| CA2572622A1 (en) | 2004-07-02 | 2006-02-09 | Nielsen Media Research, Inc. | Methods and apparatus for mixing compressed digital bit streams |
| WO2006109266A1 (en) | 2005-04-13 | 2006-10-19 | Koninklijke Philips Electronics N.V. | Method and apparatus for embedding data |
| EP2095560B1 (en) | 2006-10-11 | 2015-09-09 | The Nielsen Company (US), LLC | Methods and apparatus for embedding codes in compressed audio data streams |
| US20090076904A1 (en) * | 2007-09-17 | 2009-03-19 | Frank David Serena | Embedding digital values for digital exchange |
| US8098401B2 (en) * | 2008-08-26 | 2012-01-17 | Xerox Corporation | Method and apparatus for printing that considers an undesirable optical density printing range |
| US9749607B2 (en) | 2009-07-16 | 2017-08-29 | Digimarc Corporation | Coordinated illumination and image signal capture for enhanced signal detection |
| US8774450B2 (en) * | 2011-04-25 | 2014-07-08 | Xerox Corporation | Unauthorized text alteration prevention with contour following background patterns |
| US9635378B2 (en) | 2015-03-20 | 2017-04-25 | Digimarc Corporation | Sparse modulation for robust signaling and synchronization |
| US10424038B2 (en) | 2015-03-20 | 2019-09-24 | Digimarc Corporation | Signal encoding outside of guard band region surrounding text characters, including varying encoding strength |
| US10652127B2 (en) | 2014-10-03 | 2020-05-12 | The Nielsen Company (Us), Llc | Fusing online media monitoring data with secondary online data feeds to generate ratings data for online media exposure |
| US10783601B1 (en) | 2015-03-20 | 2020-09-22 | Digimarc Corporation | Digital watermarking and signal encoding with activable compositions |
| WO2016153936A1 (en) | 2015-03-20 | 2016-09-29 | Digimarc Corporation | Digital watermarking and data hiding with narrow-band absorption materials |
| EP3073488A1 (en) * | 2015-03-24 | 2016-09-28 | Thomson Licensing | Method and apparatus for embedding and regaining watermarks in an ambisonics representation of a sound field |
| US10872392B2 (en) | 2017-11-07 | 2020-12-22 | Digimarc Corporation | Generating artistic designs encoded with robust, machine-readable data |
| US10896307B2 (en) | 2017-11-07 | 2021-01-19 | Digimarc Corporation | Generating and reading optical codes with variable density to adapt for visual quality and reliability |
| US11062108B2 (en) | 2017-11-07 | 2021-07-13 | Digimarc Corporation | Generating and reading optical codes with variable density to adapt for visual quality and reliability |
| CN108055105B (zh) * | 2017-11-14 | 2019-08-13 | 华中科技大学 | 一种面向cpm信号的射频水印嵌入和提取方法 |
| AU2019430941B2 (en) * | 2019-08-20 | 2021-05-13 | Citrix Systems, Inc. | Masked watermarks and related systems and techniques |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9502274D0 (en) * | 1995-02-06 | 1995-03-29 | Central Research Lab Ltd | Method and apparatus for coding information |
| US6222932B1 (en) * | 1997-06-27 | 2001-04-24 | International Business Machines Corporation | Automatic adjustment of image watermark strength based on computed image texture |
| KR20010012214A (ko) * | 1998-03-04 | 2001-02-15 | 요트.게.아. 롤페즈 | 워터마크 검출 방법 및 장치 |
| US6633654B2 (en) * | 2000-06-19 | 2003-10-14 | Digimarc Corporation | Perceptual modeling of media signals based on local contrast and directional edges |
-
2001
- 2001-10-29 KR KR1020027008781A patent/KR20020071925A/ko not_active Ceased
- 2001-10-29 WO PCT/EP2001/012749 patent/WO2002039384A1/en not_active Ceased
- 2001-10-29 CN CNB018060935A patent/CN1237484C/zh not_active Expired - Fee Related
- 2001-10-29 EP EP01993908A patent/EP1336161A1/en not_active Withdrawn
- 2001-10-29 JP JP2002541628A patent/JP3898128B2/ja not_active Expired - Fee Related
- 2001-11-02 US US10/003,064 patent/US6707930B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100692527B1 (ko) * | 2005-10-12 | 2007-03-09 | 한국전자통신연구원 | 워터마크 삽입을 위한 인간시각시스템용 마스킹모델생성방법 |
| KR20220099304A (ko) * | 2021-01-06 | 2022-07-13 | 스냅태그 주식회사 | 워터마크 데이터의 임베딩 및 추출 방법 |
| KR20230132761A (ko) * | 2021-01-06 | 2023-09-18 | 스냅태그 주식회사 | 워터마크 데이터의 임베딩 및 추출 방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1237484C (zh) | 2006-01-18 |
| JP2004513587A (ja) | 2004-04-30 |
| CN1411591A (zh) | 2003-04-16 |
| US20020085736A1 (en) | 2002-07-04 |
| EP1336161A1 (en) | 2003-08-20 |
| US6707930B2 (en) | 2004-03-16 |
| JP3898128B2 (ja) | 2007-03-28 |
| WO2002039384A1 (en) | 2002-05-16 |
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