[go: up one dir, main page]

WO2002019269A3 - Procede de codage et de decodage de filigranes associes a une image - Google Patents

Procede de codage et de decodage de filigranes associes a une image Download PDF

Info

Publication number
WO2002019269A3
WO2002019269A3 PCT/CA2001/001146 CA0101146W WO0219269A3 WO 2002019269 A3 WO2002019269 A3 WO 2002019269A3 CA 0101146 W CA0101146 W CA 0101146W WO 0219269 A3 WO0219269 A3 WO 0219269A3
Authority
WO
WIPO (PCT)
Prior art keywords
encoding
decoding image
image dependent
dependent
watermarks
Prior art date
Application number
PCT/CA2001/001146
Other languages
English (en)
Other versions
WO2002019269A2 (fr
Inventor
Shelby Pereira
Original Assignee
Shelby Pereira
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 Shelby Pereira filed Critical Shelby Pereira
Publication of WO2002019269A2 publication Critical patent/WO2002019269A2/fr
Publication of WO2002019269A3 publication Critical patent/WO2002019269A3/fr

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)

Abstract

L'invention concerne un procédé permettant de générer des filigranes associés à des signaux. Ce procédé se base sur une nouvelle technique de codage basée sur l'utilisation de valeurs absolues associant le filigrane à une image. L'invention concerne divers modes de réalisation dans lesquels un bit ou un groupe de plusieurs bits sont codés à l'aide d'une fonction contenant un ou plusieurs niveaux de valeur absolue. Le décodage est simple et consiste à calculer la fonction utilisée dans l'intégration et à la comparer à un seuil afin de déterminer si un 1 ou un 0 ont été intégrés. Ce procédé est utilisé, en particulier, avec des images et des images vidéo individuelles mais peut facilement s'appliquer à un quelconque signal numérique, y compris des signaux audio.
PCT/CA2001/001146 2000-08-28 2001-08-14 Procede de codage et de decodage de filigranes associes a une image WO2002019269A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64842400A 2000-08-28 2000-08-28
US09/648,424 2000-08-28

Publications (2)

Publication Number Publication Date
WO2002019269A2 WO2002019269A2 (fr) 2002-03-07
WO2002019269A3 true WO2002019269A3 (fr) 2002-05-02

Family

ID=24600718

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/001146 WO2002019269A2 (fr) 2000-08-28 2001-08-14 Procede de codage et de decodage de filigranes associes a une image

Country Status (1)

Country Link
WO (1) WO2002019269A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891959B2 (en) 2000-04-19 2005-05-10 Digimarc Corporation Hiding information out-of-phase in color channels
US6912295B2 (en) 2000-04-19 2005-06-28 Digimarc Corporation Enhancing embedding of out-of-phase signals
US7027614B2 (en) 2000-04-19 2006-04-11 Digimarc Corporation Hiding information to reduce or offset perceptible artifacts
US7427030B2 (en) 2001-08-31 2008-09-23 Digimarc Corporation Security features for objects and method regarding same
US7537170B2 (en) 2001-08-31 2009-05-26 Digimarc Corporation Machine-readable security features for printed objects
US9117268B2 (en) 2008-12-17 2015-08-25 Digimarc Corporation Out of phase digital watermarking in two chrominance directions
US9179033B2 (en) 2000-04-19 2015-11-03 Digimarc Corporation Digital watermarking in data representing color channels
US9245308B2 (en) 2008-12-17 2016-01-26 Digimarc Corporation Encoding in two chrominance directions

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6763122B1 (en) 1999-11-05 2004-07-13 Tony Rodriguez Watermarking an image in color plane separations and detecting such watermarks
US20020032734A1 (en) * 2000-07-26 2002-03-14 Rhoads Geoffrey B. Collateral data combined with user characteristics to select web site
US6763124B2 (en) 2000-04-19 2004-07-13 Digimarc Corporation Embedding digital watermarks in spot colors
US6993149B2 (en) 2001-09-25 2006-01-31 Digimarc Corporation Embedding digital watermarks in spot colors
US7111168B2 (en) 2000-05-01 2006-09-19 Digimarc Corporation Digital watermarking systems
US7072487B2 (en) 2001-01-26 2006-07-04 Digimarc Corporation Watermark detection using adaptive color projections
US7321667B2 (en) 2002-01-18 2008-01-22 Digimarc Corporation Data hiding through arrangement of objects

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MUKHERJEE D ET AL: "A SOURCE AND CHANNEL CODING APPROACH TO DATA HIDING WITH APPLICATION TO HIDING SPEECH IN VIDEO", PROCEEDINGS OF THE 1998 INTERNATIONAL CONFERENCE ON IMAGE PROCESSING. ICIP '98. CHICAGO, IL, OCT. 4 - 7, 1998, INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, LOS ALAMITOS, CA: IEEE COMPUTER SOC, US, vol. 1 CONF. 5, October 1998 (1998-10-01), pages 348 - 352, XP000668952, ISBN: 0-8186-8822-X *
SERVETTO S D ET AL: "CAPACITY ISSUES IN DIGITAL IMAGE WATERMARKING", PROCEEDINGS OF THE 1998 INTERNATIONAL CONFERENCE ON IMAGE PROCESSING. ICIP '98. CHICAGO, IL, OCT. 4 - 7, 1998, INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, LOS ALAMITOS, CA: IEEE COMPUTER SOC, US, vol. 1 CONF. 5, 4 October 1998 (1998-10-04), pages 445 - 449, XP000953823, ISBN: 0-8186-8822-X *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891959B2 (en) 2000-04-19 2005-05-10 Digimarc Corporation Hiding information out-of-phase in color channels
US6912295B2 (en) 2000-04-19 2005-06-28 Digimarc Corporation Enhancing embedding of out-of-phase signals
US7027614B2 (en) 2000-04-19 2006-04-11 Digimarc Corporation Hiding information to reduce or offset perceptible artifacts
US9179033B2 (en) 2000-04-19 2015-11-03 Digimarc Corporation Digital watermarking in data representing color channels
US7427030B2 (en) 2001-08-31 2008-09-23 Digimarc Corporation Security features for objects and method regarding same
US7537170B2 (en) 2001-08-31 2009-05-26 Digimarc Corporation Machine-readable security features for printed objects
US9117268B2 (en) 2008-12-17 2015-08-25 Digimarc Corporation Out of phase digital watermarking in two chrominance directions
US9245308B2 (en) 2008-12-17 2016-01-26 Digimarc Corporation Encoding in two chrominance directions
US9582844B2 (en) 2008-12-17 2017-02-28 Digimarc Corporation Detection from two chrominance directions

Also Published As

Publication number Publication date
WO2002019269A2 (fr) 2002-03-07

Similar Documents

Publication Publication Date Title
WO2002019269A3 (fr) Procede de codage et de decodage de filigranes associes a une image
MY139799A (en) Decoding method and apparatus for detection of watermarks in a compressed video bitstream
MY140227A (en) Picture coding method
GB2362532B (en) Video coding
GB2352350B (en) Video coding
MY154342A (en) Technique for simulating film grain on encoded video
GB2605029A (en) Use of transformed coefficients to provide embedded signalling for watermarking
JPH11284843A (ja) ウォ―タマ―クをディジタル画像シ―ケンスのビットストリ―ム表現に組み込むための方法及び装置
WO2004070952A3 (fr) Diffusion sur frequences decalees en mode robuste sans artefacts
EP0732856A3 (fr) Codeur et décodeur vidéo hiérarchique
EP0933946A3 (fr) Méthode de transmission de données utilisant un flux binaire imbriqué créé dans un quantificateur vectoriel avec consultation de tables
EP1365593A3 (fr) Compression de signaux vidéo
EP1091593A3 (fr) Méthode et appareil pour codage vidéo amélioré
EP1331820A4 (fr) Appareil de traitement de donnees
Wang et al. A region and data hiding based error concealment scheme for images
EP0859517A3 (fr) Codeur vidéo utilisant une transpostion de pixels
DE69711736D1 (de) Adaptive Postfilterung für ein Bildfernsprechsystem mit niedriger Bitrate
EP0539473A1 (fr) Protection contre l'erreur de donnees codees au moyen de mots-codes de longueur variable (clv)
KR20010024001A (ko) 압축된 비디오 신호에서 워터마크 검출
KR20010074604A (ko) 엠피이지 비디오 스트림상의 블록 유닛 양자화를 이용한실시간 동영상 워터마크 삽입방법 및 검출방법
ATE555470T1 (de) Toncodiereinrichtung und toncodierverfahren
JP3672143B2 (ja) 電子すかし作成方法
EP1202576A3 (fr) Procédé et appareil de codage et de décodage d'images
Seki et al. Quantization-based image steganography without data hiding position memorization
JP3464397B2 (ja) 画像情報コーディング時符号化表示方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE BG BR CA CN CZ DK DZ HU IL IN IS JP KP KR MX PL RO RU UA

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP