CA2486448A1 - Structuration en couches temporelle, par resolution codee et en filigrane numerique des televisions de pointe - Google Patents

Structuration en couches temporelle, par resolution codee et en filigrane numerique des televisions de pointe Download PDF

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Publication number
CA2486448A1
CA2486448A1 CA002486448A CA2486448A CA2486448A1 CA 2486448 A1 CA2486448 A1 CA 2486448A1 CA 002486448 A CA002486448 A CA 002486448A CA 2486448 A CA2486448 A CA 2486448A CA 2486448 A1 CA2486448 A1 CA 2486448A1
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CA
Canada
Prior art keywords
unit
units
watermark
data stream
watermarking technique
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
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CA002486448A
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English (en)
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CA2486448C (fr
Inventor
Gary A. Demos
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Dolby Laboratories Licensing Corp
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Individual
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Publication of CA2486448A1 publication Critical patent/CA2486448A1/fr
Application granted granted Critical
Publication of CA2486448C publication Critical patent/CA2486448C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • 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
    • G06T1/0085—Time domain based watermarking, e.g. watermarks spread over several images
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/467—Embedding additional information in the video signal during the compression process characterised by the embedded information being invisible, e.g. watermarking
    • 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
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H04N21/25841—Management of client data involving the geographical location of the client
    • 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
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
    • 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
    • G06T2201/0053—Embedding of the watermark in the coding stream, possibly without decoding; Embedding of the watermark in the compressed domain

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Graphics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Television Systems (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

L'invention concerne un procédé et un appareil de compression d'image au moyen d'une structuration en couches temporelle et par résolution de trames d'images comprimées, offrant des capacités de codage et de filigrane numérique (1404). Plus particulièrement, la compression en couches permet une forme de décomposition modularisée d'une image qui supporte les techniques de codage et de filigrane numérique (1404) flexibles. La compression en couches permet l'utilisation de la couche de base et de différents composants internes de la couche de base afin de coder un train de données de film en couches comprimées. L'utilisation d'un tel sous-ensemble en couches de bits permet de rendre tout le train d'images méconnaissable grâce au seul codage d'une fraction des bits du train entier. Plusieurs algorithmes et forces de codage peuvent être appliqués à différentes parties du train en couches, y compris des couches de renforcement. Des algorithmes ou des clés de codage peuvent être changés à chaque contour de tranche afin de fournir un meilleur entrelacement du codage et du train d'images. Le filigrane numérique (1404) repère les copies perdues ou volées pour les ramener vers la source de manière que la nature du vol puisse être déterminée et que les personnes impliquées dans le vol soient identifiées. Le filigrane numérique (1404) utilise de préférence des bits de poids faible dans certains coefficients et certains cadres d'un train de films comprimés en couches afin de fournir une identification fiable tout en étant invisible ou presque à l'oeil. Une couche de renforcement peut également avoir sa propre structure de filigrane numérique (1404) d'identification unique.
CA2486448A 2002-06-13 2002-06-13 Structuration en couches temporelle, par resolution codee et en filigrane numerique des televisions de pointe Expired - Fee Related CA2486448C (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/018884 WO2004012455A1 (fr) 2002-06-13 2002-06-13 Structuration en couches temporelle, par resolution codee et en filigrane numerique des televisions de pointe

Publications (2)

Publication Number Publication Date
CA2486448A1 true CA2486448A1 (fr) 2004-02-05
CA2486448C CA2486448C (fr) 2012-01-24

Family

ID=31185972

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2486448A Expired - Fee Related CA2486448C (fr) 2002-06-13 2002-06-13 Structuration en couches temporelle, par resolution codee et en filigrane numerique des televisions de pointe

Country Status (5)

Country Link
EP (1) EP1512286A4 (fr)
JP (1) JP2005530462A (fr)
AU (1) AU2002318344B2 (fr)
CA (1) CA2486448C (fr)
WO (1) WO2004012455A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2843517B1 (fr) * 2002-08-06 2005-02-11 Medialive Dispositif pour le brouillage de contenus multimedias et audiovisuels de type mpeg-4
EP1855436A1 (fr) * 2006-05-12 2007-11-14 Deutsche Thomson-Brandt Gmbh Procédé et dispositif de chiffrage d'un signal audio codé
JP4902274B2 (ja) * 2006-06-23 2012-03-21 日本放送協会 暗号化コンテンツ作成装置およびそのプログラム、ならびに、コンテンツ復号化装置およびそのプログラム
JP4932452B2 (ja) * 2006-11-24 2012-05-16 三菱電機株式会社 データ変換装置及びデータ変換方法及びプログラム
US9438849B2 (en) 2012-10-17 2016-09-06 Dolby Laboratories Licensing Corporation Systems and methods for transmitting video frames
JP6605789B2 (ja) 2013-06-18 2019-11-13 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 送信方法、受信方法、送信装置、および、受信装置
EP2960854A1 (fr) * 2014-06-27 2015-12-30 Thomson Licensing Procédé et dispositif pour déterminer un ensemble d'éléments modifiables dans un groupe d'images
US9906821B1 (en) 2016-08-23 2018-02-27 Cisco Technology, Inc. Packet reordering system
CN113630606B (zh) * 2020-05-07 2024-04-19 百度在线网络技术（北京）有限公司 视频水印处理方法、装置、电子设备及存储介质

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996020563A1 (fr) * 1994-12-27 1996-07-04 Kabushiki Kaisha Toshiba Emetteur, recepteur, systeme de traitement de communications qui les integre, et systeme de telediffusion numerique
US5852565A (en) * 1996-01-30 1998-12-22 Demografx Temporal and resolution layering in advanced television
US6069914A (en) * 1996-09-19 2000-05-30 Nec Research Institute, Inc. Watermarking of image data using MPEG/JPEG coefficients
US6332194B1 (en) * 1998-06-05 2001-12-18 Signafy, Inc. Method for data preparation and watermark insertion
SE513356C2 (sv) * 1998-11-20 2000-08-28 Ericsson Telefon Ab L M Förfarande och anordning för kryptering av bilder
US6182214B1 (en) * 1999-01-08 2001-01-30 Bay Networks, Inc. Exchanging a secret over an unreliable network
EP1189432A3 (fr) * 2000-08-14 2004-10-20 Matsushita Electric Industrial Co., Ltd. Un schéma hiérarchique d'encryption pour la distribution sûre de contenu prédéterminé

Also Published As

Publication number Publication date
CA2486448C (fr) 2012-01-24
AU2002318344B2 (en) 2008-01-31
EP1512286A4 (fr) 2009-05-13
AU2002318344A1 (en) 2004-02-16
EP1512286A1 (fr) 2005-03-09
JP2005530462A (ja) 2005-10-06
WO2004012455A1 (fr) 2004-02-05

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