JP4373045B2 - 光学的ウォーターマーク - Google Patents

光学的ウォーターマーク Download PDF

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Publication number
JP4373045B2
JP4373045B2 JP2001549269A JP2001549269A JP4373045B2 JP 4373045 B2 JP4373045 B2 JP 4373045B2 JP 2001549269 A JP2001549269 A JP 2001549269A JP 2001549269 A JP2001549269 A JP 2001549269A JP 4373045 B2 JP4373045 B2 JP 4373045B2
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Japan
Prior art keywords
watermark
document
layer
latent image
layers
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English (en)
Japanese (ja)
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JP2003530737A5 (enExample
JP2003530737A (ja
Inventor
フアン、シェン
ウー、ジアン・カン
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トラストコピー・ピーティーイー・リミテッド
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Publication of JP2003530737A5 publication Critical patent/JP2003530737A5/ja
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    • 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
    • G06T1/005—Robust watermarking, e.g. average attack or collusion attack resistant
    • G06T1/0071—Robust watermarking, e.g. average attack or collusion attack resistant using multiple or alternating watermarks
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00—General purpose image data processing
    • G06T2201/005—Image watermarking
    • G06T2201/0051—Embedding of the watermark in the spatial domain

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)
  • Holo Graphy (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Credit Cards Or The Like (AREA)
JP2001549269A 2000-09-15 2000-09-15 光学的ウォーターマーク Expired - Fee Related JP4373045B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2000/000147 WO2002023481A1 (en) 2000-09-15 2000-09-15 Optical watermark

Publications (3)

Publication Number Publication Date
JP2003530737A JP2003530737A (ja) 2003-10-14
JP2003530737A5 JP2003530737A5 (enExample) 2007-10-11
JP4373045B2 true JP4373045B2 (ja) 2009-11-25

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Family Applications (1)

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JP2001549269A Expired - Fee Related JP4373045B2 (ja) 2000-09-15 2000-09-15 光学的ウォーターマーク

Country Status (8)

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US (1) US7366301B2 (enExample)
EP (1) EP1317734B1 (enExample)
JP (1) JP4373045B2 (enExample)
CN (1) CN1170254C (enExample)
AT (1) ATE289437T1 (enExample)
AU (1) AU785178B2 (enExample)
DE (1) DE60018222T2 (enExample)
WO (1) WO2002023481A1 (enExample)

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Also Published As

Publication number Publication date
US20020054680A1 (en) 2002-05-09
EP1317734A1 (en) 2003-06-11
AU785178B2 (en) 2006-10-12
US7366301B2 (en) 2008-04-29
DE60018222D1 (de) 2005-03-24
CN1372677A (zh) 2002-10-02
AU7569000A (en) 2002-03-26
WO2002023481A1 (en) 2002-03-21
JP2003530737A (ja) 2003-10-14
DE60018222T2 (de) 2006-01-12
EP1317734B1 (en) 2005-02-16
ATE289437T1 (de) 2005-03-15
CN1170254C (zh) 2004-10-06

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