WO2002019269A3 - A method for encoding and decoding image dependent watermarks - Google Patents

A method for encoding and decoding image dependent watermarks Download PDF

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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
French (fr)
Other versions
WO2002019269A2 (en
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/en
Publication of WO2002019269A3 publication Critical patent/WO2002019269A3/en

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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
    • G06T1/0028—Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking

Abstract

A method for generating signal dependent wa-termarks is described. The method is based on a novel coding technique based on the use of absolute values which renders the watermark dependent on the image. Various embodiments are described in which 1 bit or a group of several bits are encoded by using a function containing one or more levels of absolute value. The de-coding is straightforward and consists of calculating the function used at embedding and comparing it against a threshold to determine if a 1 or 0 was embedded. The method is described for the particular case of images and individual video frames, but is easily applicable to any digital signal including audio signals.
PCT/CA2001/001146 2000-08-28 2001-08-14 A method for encoding and decoding image dependent watermarks WO2002019269A2 (en)

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 (en) 2002-03-07
WO2002019269A3 true WO2002019269A3 (en) 2002-05-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/001146 WO2002019269A2 (en) 2000-08-28 2001-08-14 A method for encoding and decoding image dependent watermarks

Country Status (1)

Country Link
WO (1) WO2002019269A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 (6)

* 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
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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9179033B2 (en) 2000-04-19 2015-11-03 Digimarc Corporation Digital watermarking in data representing color channels
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

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Publication number Publication date
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