MY163424A - Watermarking - Google Patents

Watermarking

Info

Publication number
MY163424A
MY163424A MYPI20032891A MYPI20032891A MY163424A MY 163424 A MY163424 A MY 163424A MY PI20032891 A MYPI20032891 A MY PI20032891A MY PI20032891 A MYPI20032891 A MY PI20032891A MY 163424 A MY163424 A MY 163424A
Authority
MY
Malaysia
Prior art keywords
image
indicator region
colour
intensity
naked eye
Prior art date
Application number
MYPI20032891A
Inventor
Huijuan Yang
Original Assignee
Crimsonlogic Pte Ltd
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 Crimsonlogic Pte Ltd filed Critical Crimsonlogic Pte Ltd
Publication of MY163424A publication Critical patent/MY163424A/en

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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
    • G07D7/0034—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements using watermarks
    • 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
    • G06T2201/0051—Embedding of the watermark in the spatial 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
    • G06T2201/0064—Image watermarking for copy protection or copy management, e.g. CGMS, copy only once, one-time copy

Abstract

A METHOD AND SYSTEM FOR PRODUCING A PRINTABLE WATERMARK IMAGE (1207) FOR EMBEDDING INTO A DOCUMENT FOR PRINTING (1304), SAID IMAGE (1207) COMPRISING: AN IMAGE BACKGROUND (103) HAVING A AVERAGE INTENSITY OF A FIRST COLOUR; AND AN INDICATOR REGION (102) ALSO HAVING SAID AVERAGE INTENSITY OF SAID COLOUR, AT LEAST SAID INDICATOR REGION INTENSITY BEING THE RESULT OF A DITHERED ARRANGEMENT OF AT LEAST TWO DIFFERENT INTENSITIES, AND WHEREIN THE RESOLUTION OF SAID IMAGE (1207), THE DITHERED ARRANGEMENT AND THE TWO OR MORE INTENSITIES ARE SELECTED SUCH THAT THE COLOUR AND INTENSITY OF THE IMAGE BACKGROUND (103) AND THE INDICATOR REGION (102) APPEAR UNIFORM TO THE NAKED EYE BUT THE INDICATOR REGION (102) BECOMES APPARENT TO THE NAKED EYE AFTER PROCESSING THE PRINTED IMAGE WITH A COPYING DEVICE OPERATING AS A LOW PASS FILTER.
MYPI20032891A 2002-07-31 2003-07-30 Watermarking MY163424A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SG2002046068 2002-07-31

Publications (1)

Publication Number Publication Date
MY163424A true MY163424A (en) 2017-09-15

Family

ID=31713319

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20032891A MY163424A (en) 2002-07-31 2003-07-30 Watermarking

Country Status (4)

Country Link
AU (1) AU2003256230A1 (en)
MY (1) MY163424A (en)
TW (1) TWI298144B (en)
WO (1) WO2004015617A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI409648B (en) * 2008-03-10 2013-09-21 Ind Tech Res Inst Capturing system and method for technical documents and capturing system for patent documents thereof
US8373880B2 (en) 2008-03-26 2013-02-12 Industrial Technology Research Institute Technical documents capturing and patents analysis system and method
DE102020000512A1 (en) * 2020-01-28 2021-07-29 Mühlbauer Gmbh & Co. Kg Method for making security information of a digitally stored image visible and image display device for carrying out such a method
CN114265567B (en) * 2022-02-25 2022-06-10 北京辰光融信技术有限公司 Watermark printing method, printing equipment and storage medium
TWI817551B (en) * 2022-06-10 2023-10-01 友達光電股份有限公司 Image encryption system and image encryption method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4310180A (en) * 1977-05-18 1982-01-12 Burroughs Corporation Protected document and method of making same
US4582346A (en) * 1984-05-08 1986-04-15 Moore Business Forms, Inc. Document security system
JPH06511611A (en) * 1992-05-29 1994-12-22 エコール ポリテクニーク フェデラル ドゥ ローザンヌ（エーペーエフエル） How to mark a document
US5375886A (en) * 1993-04-14 1994-12-27 Hosokawa Printing Co., Ltd. Counterfeit-proof paper for discouraging attempt at reproduction with copying device
JP2003527779A (en) * 1999-09-01 2003-09-16 ディジマーク コーポレイション Method of forming watermark on digital image by specifying intensity for each area

Also Published As

Publication number Publication date
WO2004015617A1 (en) 2004-02-19
TWI298144B (en) 2008-06-21
AU2003256230A1 (en) 2004-02-25
TW200406717A (en) 2004-05-01

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