JP2000510980A - 情報信号に埋め込まれた透かし情報の検出方法 - Google Patents
情報信号に埋め込まれた透かし情報の検出方法Info
- Publication number
- JP2000510980A JP2000510980A JP10505787A JP50578798A JP2000510980A JP 2000510980 A JP2000510980 A JP 2000510980A JP 10505787 A JP10505787 A JP 10505787A JP 50578798 A JP50578798 A JP 50578798A JP 2000510980 A JP2000510980 A JP 2000510980A
- Authority
- JP
- Japan
- Prior art keywords
- information
- watermark information
- watermark
- signal
- information signal
- 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.)
- Granted
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23892—Multiplex stream processing, e.g. multiplex stream encrypting involving embedding information at multiplex stream level, e.g. embedding a watermark at packet level
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8358—Generation of protective data, e.g. certificates involving watermark
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/24—Systems for the transmission of television signals using pulse code modulation
- H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
-
- 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
-
- 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
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
- Television Systems (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 情報信号中に埋め込まれている透かし情報を検出する方法であって、前記情 報信号と供給された透かし情報との相関をとる相関ステップと、前記相関の結 果を評価する評価ステップとを具えている透かし情報検出方法において、前記 情報信号及び前記供給された透かし情報の一方又は双方を予測フィルタリング 処理し、これにて処理した情報信号と前記フィルタリング処理した透かし情報 とに対して前記相関ステップを適用することを特徴とする透かし情報検出方法 。 2. 前記予測フィルタリング処理を前記情報信号の予定した統計的特性に適合さ せることを特徴とする請求の範囲1に記載の方法。 3. 前記双方の予測フィルタリング処理を同じとすることを特徴とする請求の範 囲1に記載の方法。 4. 情報信号に埋め込まれている透かし情報を検出する方法であって、供給され た透かし情報によって決定されるフィルタ係数を用いて前記情報信号をフィル タリング処理するステップと、前記フィルタリング処理の結果を評価するステ ップとを具えている透かし情報検出方法において、前記フィルタ係数を前記情 報信号の統計的特性のモデルによっても決定することを特徴とする透かし情報 検出方法。 5. 情報信号中に埋め込まれている透かし情報(Wi)を検出する装置であって 、前記情報信号(xi)と供給された透かし情報(Wj)との相関をとる相関 手段(22,23)と、前記相関の結果を評価する評価手段(24)とを具え ている透かし情報検出装置において、前記情報信号をフィルタリング処理する 予測フィルタ(25)及び前記供給された透かし情報をフィルタリング処理す る予測フィルタ(26)の一方又は双方の予測フィルタを設け、フィルタリン グ処理した情報信号及びフィルタリング処理した透かし情報を前記相関手段に 供給するようにしたことを特徴とする透かし情報検出装置。 6. 前記予測フィルタ(25,26)を前記情報信号の予定した統計的特性に適 合させるようにしたことを特徴とする請求の範囲4に記載の装置。 7. 前記両予測フィルタ(25,26)を同じものとすることを特徴とする請求 の範囲5に記載の装置。 8. 情報信号(xi)中に埋め込まれた透かし情報(Wi)を検出する装置であ って、フィルタ係数を用いて前記情報信号をフィルタリング処理するフィルタ (41,42,43)と、供給された透かし情報(Wj)に応じて前記フィル タ係数を計算する計算手段(44)と、前記フィルタリング処理の結果を評価 する評価手段(24)とを具えている透かし情報検出装置において、前記計算 手段(44)を前記情報信号の統計的特性のモデルに従って前記フィルタ計数 を決定するのにも適合させるようにしたことを特徴とする透かし情報検出装置 。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96202016 | 1996-07-16 | ||
EP96202016.0 | 1996-07-16 | ||
PCT/IB1997/000692 WO1998003014A1 (en) | 1996-07-16 | 1997-06-12 | Detecting a watermark embedded in an information signal |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2000510980A true JP2000510980A (ja) | 2000-08-22 |
JP2000510980A5 JP2000510980A5 (ja) | 2005-03-10 |
JP3982836B2 JP3982836B2 (ja) | 2007-09-26 |
Family
ID=8224197
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50578798A Expired - Lifetime JP3982836B2 (ja) | 1996-07-16 | 1997-06-12 | 情報信号に埋め込まれた透かし情報の検出方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5933798A (ja) |
EP (1) | EP0940037B1 (ja) |
JP (1) | JP3982836B2 (ja) |
KR (1) | KR100449354B1 (ja) |
DE (1) | DE69734207T2 (ja) |
WO (1) | WO1998003014A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007053587A (ja) * | 2005-08-18 | 2007-03-01 | Shikoku Res Inst Inc | 映像信号への信号重畳装置および信号重畳方法 |
JP2008228344A (ja) * | 2001-12-13 | 2008-09-25 | Sony United Kingdom Ltd | 検出データ処理装置、識別方法及びプログラム |
JP2008546292A (ja) * | 2005-06-02 | 2008-12-18 | トムソン ライセンシング | 拡散スペクトルを用いて透かしデータでオーディオまたはビデオ信号に透かしを入れる方法及び装置 |
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- 1997-06-12 EP EP97924186A patent/EP0940037B1/en not_active Expired - Lifetime
- 1997-06-12 KR KR10-1998-0701915A patent/KR100449354B1/ko not_active IP Right Cessation
- 1997-06-12 DE DE69734207T patent/DE69734207T2/de not_active Expired - Lifetime
- 1997-07-16 US US08/895,250 patent/US5933798A/en not_active Expired - Lifetime
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JP2008228344A (ja) * | 2001-12-13 | 2008-09-25 | Sony United Kingdom Ltd | 検出データ処理装置、識別方法及びプログラム |
JP2008546292A (ja) * | 2005-06-02 | 2008-12-18 | トムソン ライセンシング | 拡散スペクトルを用いて透かしデータでオーディオまたはビデオ信号に透かしを入れる方法及び装置 |
JP2007053587A (ja) * | 2005-08-18 | 2007-03-01 | Shikoku Res Inst Inc | 映像信号への信号重畳装置および信号重畳方法 |
Also Published As
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EP0940037B1 (en) | 2005-09-14 |
KR19990044661A (ko) | 1999-06-25 |
DE69734207T2 (de) | 2006-06-14 |
DE69734207D1 (de) | 2005-10-20 |
EP0940037A1 (en) | 1999-09-08 |
US5933798A (en) | 1999-08-03 |
JP3982836B2 (ja) | 2007-09-26 |
KR100449354B1 (ko) | 2005-08-17 |
WO1998003014A1 (en) | 1998-01-22 |
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