GB0306047D0 - Double watermarking - Google Patents

Double watermarking

Info

Publication number
GB0306047D0
GB0306047D0 GB0306047A GB0306047A GB0306047D0 GB 0306047 D0 GB0306047 D0 GB 0306047D0 GB 0306047 A GB0306047 A GB 0306047A GB 0306047 A GB0306047 A GB 0306047A GB 0306047 D0 GB0306047 D0 GB 0306047D0
Authority
GB
United Kingdom
Prior art keywords
watermarking
double
double watermarking
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.)
Withdrawn
Application number
GB0306047A
Other versions
GB2390251A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Bristol
Original Assignee
University of Bristol
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 University of Bristol filed Critical University of Bristol
Publication of GB0306047D0 publication Critical patent/GB0306047D0/en
Priority to AU2003244781A priority Critical patent/AU2003244781A1/en
Priority to PCT/GB2003/002470 priority patent/WO2004003841A2/en
Publication of GB2390251A publication Critical patent/GB2390251A/en
Withdrawn legal-status Critical Current

Links

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
    • G06T1/005—Robust watermarking, e.g. average attack or collusion attack resistant
    • G06T1/0078—Robust watermarking, e.g. average attack or collusion attack resistant using multiple thresholds
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)
GB0306047A 2002-06-27 2003-03-17 Detecting and characterising attacks on a watermarked digital object Withdrawn GB2390251A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003244781A AU2003244781A1 (en) 2002-06-27 2003-06-09 Image attack characterisation by double watermarking
PCT/GB2003/002470 WO2004003841A2 (en) 2002-06-27 2003-06-09 Image attack characterisation by double watermarking

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0214985A GB2390246A (en) 2002-06-27 2002-06-27 Method of characterising attacks on a watermarked object

Publications (2)

Publication Number Publication Date
GB0306047D0 true GB0306047D0 (en) 2003-04-23
GB2390251A GB2390251A (en) 2003-12-31

Family

ID=9939474

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0214985A Withdrawn GB2390246A (en) 2002-06-27 2002-06-27 Method of characterising attacks on a watermarked object
GB0306047A Withdrawn GB2390251A (en) 2002-06-27 2003-03-17 Detecting and characterising attacks on a watermarked digital object

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB0214985A Withdrawn GB2390246A (en) 2002-06-27 2002-06-27 Method of characterising attacks on a watermarked object

Country Status (1)

Country Link
GB (2) GB2390246A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101105857B (en) * 2007-07-20 2010-09-29 北京交通大学 High capacity reversible water mark method based on predication and companding technology
CN107679572B (en) * 2017-09-29 2021-05-04 深圳大学 Image distinguishing method, storage device and mobile terminal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6654479B1 (en) * 1999-08-19 2003-11-25 Academia Sinica Cocktail watermarking on images
US6512837B1 (en) * 2000-10-11 2003-01-28 Digimarc Corporation Watermarks carrying content dependent signal metrics for detecting and characterizing signal alteration
GB2374995A (en) * 2001-04-25 2002-10-30 Univ Bristol Watermarking using representative values

Also Published As

Publication number Publication date
GB2390251A (en) 2003-12-31
GB0214985D0 (en) 2002-08-07
GB2390246A (en) 2003-12-31

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)