WO1999066379A3 - Stochastic scanning documents to change moire effects - Google Patents

Stochastic scanning documents to change moire effects Download PDF

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Publication number
WO1999066379A3
WO1999066379A3 PCT/US1999/013320 US9913320W WO9966379A3 WO 1999066379 A3 WO1999066379 A3 WO 1999066379A3 US 9913320 W US9913320 W US 9913320W WO 9966379 A3 WO9966379 A3 WO 9966379A3
Authority
WO
WIPO (PCT)
Prior art keywords
document
moved
motion
change
sensor array
Prior art date
Application number
PCT/US1999/013320
Other languages
French (fr)
Other versions
WO1999066379A2 (en
Inventor
Geoffrey B Rhoads
Original Assignee
Digimarc Corp
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 Digimarc Corp filed Critical Digimarc Corp
Priority to AU46810/99A priority Critical patent/AU4681099A/en
Publication of WO1999066379A2 publication Critical patent/WO1999066379A2/en
Publication of WO1999066379A3 publication Critical patent/WO1999066379A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
    • H04N1/1013—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components
    • H04N1/1017—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of at least a part of the main-scanning components the main-scanning components remaining positionally invariant with respect to one another in the sub-scanning direction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
    • H04N1/191—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a one-dimensional array, or a combination of one-dimensional arrays, or a substantially one-dimensional array, e.g. an array of staggered elements
    • H04N1/192—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
    • H04N1/193—Simultaneously or substantially simultaneously scanning picture elements on one main scanning line using electrically scanned linear arrays, e.g. linear CCD arrays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/0458—Additional arrangements for improving or optimising scanning resolution or quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
    • H04N2201/04—Scanning arrangements
    • H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
    • H04N2201/046—Actively compensating for disturbances, e.g. vibrations

Abstract

An additional motion is introduced into a scanning operation in addition to the motion inherent in the operation. In a flatbed scanner a linear sensor array is fixedly positioned across the document in an 'x' direction and is moved across the document in a perpendicular or 'y' direction. In a drum scanner a light beam moves across the document in the 'x' direction and the document is moved in the 'y' direction. Light reflected from the document is directed to a fixed photoreceptor. With the present invention, the sensor array (14), or the photoreceptor, is moved or vibrated in the 'x' direction by a simple piezo electric transducer (15) or by a simple mechanical cam. To eliminate Moire patterns the vibratory movement is a pseudo random series of movements. To introduce a special pattern into the document or to otherwise create special effects, various other types of motion can be used.
PCT/US1999/013320 1998-06-18 1999-06-14 Stochastic scanning documents to change moire effects WO1999066379A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46810/99A AU4681099A (en) 1998-06-18 1999-06-14 Stochastic scanning documents to change moire effects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/099,864 US6320680B1 (en) 1998-06-18 1998-06-18 Stochastic scanning documents to change moire effects
US09/099,864 1998-06-18

Publications (2)

Publication Number Publication Date
WO1999066379A2 WO1999066379A2 (en) 1999-12-23
WO1999066379A3 true WO1999066379A3 (en) 2000-04-06

Family

ID=22276989

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/013320 WO1999066379A2 (en) 1998-06-18 1999-06-14 Stochastic scanning documents to change moire effects

Country Status (3)

Country Link
US (4) US6320680B1 (en)
AU (1) AU4681099A (en)
WO (1) WO1999066379A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6320680B1 (en) * 1998-06-18 2001-11-20 Digimarc Corporation Stochastic scanning documents to change moire effects
US6956963B2 (en) * 1998-07-08 2005-10-18 Ismeca Europe Semiconductor Sa Imaging for a machine-vision system
JP4032527B2 (en) * 1998-10-05 2008-01-16 コニカミノルタビジネステクノロジーズ株式会社 Image reading device
US6788411B1 (en) * 1999-07-08 2004-09-07 Ppt Vision, Inc. Method and apparatus for adjusting illumination angle
WO2004072659A2 (en) * 2003-02-07 2004-08-26 University Of Southern California Reflectometry apparatus and method
DE102006041462B3 (en) * 2006-09-04 2008-01-03 Chromasens Gmbh Optical scanning method for documents with line camera, involves scanning document which is guided with variable transportation speed and line frequency
JP4913184B2 (en) * 2009-08-06 2012-04-11 株式会社東芝 Identity verification document authenticity determination device, identity verification document authentication method and program
US9726818B1 (en) * 2013-05-30 2017-08-08 Hrl Laboratories, Llc Multi-wavelength band optical phase and amplitude controller
US9485380B2 (en) * 2014-06-25 2016-11-01 Fuji Xerox Co., Ltd. Image reading apparatus, image forming apparatus and computer readable medium storing program
CN105260152B (en) * 2015-10-09 2018-05-08 利亚德光电股份有限公司 Image processing method and device for LED display

Citations (7)

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US4689514A (en) * 1985-06-10 1987-08-25 Kabushiki Kaisha Toshiba Displacement generating device
US4743927A (en) * 1985-12-16 1988-05-10 Brother Kogyo Kabushiki Kaisha Printing apparatus
US5335091A (en) * 1991-12-31 1994-08-02 Eastman Kodak Company Apparatus for mechanically dithering a CCD array
US5396142A (en) * 1994-01-24 1995-03-07 Evan Koblanski Positioning apparatus
US5489994A (en) * 1993-10-29 1996-02-06 Eastman Kodak Company Integrated apertures on a full frame CCD image sensor
US5541741A (en) * 1991-09-30 1996-07-30 Canon Kabushiki Kaisha Image processing with anti-forgery provision
US5751444A (en) * 1995-12-18 1998-05-12 Adobe Systems Incorporated Imaging apparatus for copying bound documents

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US578223A (en) * 1897-03-02 Currycomb
US4326147A (en) 1975-08-18 1982-04-20 Hitachi, Ltd. Slotted shadow mask having apertures spaced to minimize moire
US4468706A (en) 1979-02-13 1984-08-28 Coulter Systems Corporation Imaging by varying the placement of elements in the pixels
US4336558A (en) 1980-04-23 1982-06-22 American Hoechst Corp. Imaging system and method with reduced moire interference
EP0065281B1 (en) 1981-05-20 1990-12-05 DR.-ING. RUDOLF HELL GmbH Scanning system and scanning diaphragm for suppressing moiré during the scanning of screened originals
US4613896A (en) 1984-03-30 1986-09-23 Dainippon Screen Mfg. Co., Ltd. Methods and apparatus for avoiding moire in color scanners for graphic art
JPS63209288A (en) 1987-02-25 1988-08-30 Olympus Optical Co Ltd Image pickup device
DE3856285T2 (en) 1987-08-11 1999-06-10 Canon Kk Device for producing color images
JPH0718985B2 (en) 1989-02-21 1995-03-06 日本放送協会 Solid-state imaging device
US4965599A (en) 1989-11-13 1990-10-23 Eastman Kodak Company Scanning apparatus for halftone image screen writing
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KR950001076B1 (en) * 1992-05-12 1995-02-08 주식회사 금성사 Heater fabricating method of electron gun for crt
US5767987A (en) 1994-09-26 1998-06-16 Ricoh Corporation Method and apparatus for combining multiple image scans for enhanced resolution
JP3237452B2 (en) 1995-04-20 2001-12-10 富士ゼロックス株式会社 Image writing device
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Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689514A (en) * 1985-06-10 1987-08-25 Kabushiki Kaisha Toshiba Displacement generating device
US4743927A (en) * 1985-12-16 1988-05-10 Brother Kogyo Kabushiki Kaisha Printing apparatus
US5541741A (en) * 1991-09-30 1996-07-30 Canon Kabushiki Kaisha Image processing with anti-forgery provision
US5335091A (en) * 1991-12-31 1994-08-02 Eastman Kodak Company Apparatus for mechanically dithering a CCD array
US5489994A (en) * 1993-10-29 1996-02-06 Eastman Kodak Company Integrated apertures on a full frame CCD image sensor
US5396142A (en) * 1994-01-24 1995-03-07 Evan Koblanski Positioning apparatus
US5751444A (en) * 1995-12-18 1998-05-12 Adobe Systems Incorporated Imaging apparatus for copying bound documents

Also Published As

Publication number Publication date
US6320680B1 (en) 2001-11-20
US20040130758A1 (en) 2004-07-08
US6631015B2 (en) 2003-10-07
WO1999066379A2 (en) 1999-12-23
US7656565B2 (en) 2010-02-02
US8203766B2 (en) 2012-06-19
AU4681099A (en) 2000-01-05
US20020075531A1 (en) 2002-06-20
US20110026086A1 (en) 2011-02-03

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