CA2088235A1 - Image processing for adding images information unrecognizable to human eyes - Google Patents
Image processing for adding images information unrecognizable to human eyesInfo
- Publication number
- CA2088235A1 CA2088235A1 CA002088235A CA2088235A CA2088235A1 CA 2088235 A1 CA2088235 A1 CA 2088235A1 CA 002088235 A CA002088235 A CA 002088235A CA 2088235 A CA2088235 A CA 2088235A CA 2088235 A1 CA2088235 A1 CA 2088235A1
- Authority
- CA
- Canada
- Prior art keywords
- added
- predetermined value
- image processing
- pixel data
- information
- 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.)
- Granted
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
- H04N1/00838—Preventing unauthorised reproduction
- H04N1/00856—Preventive measures
- H04N1/00864—Modifying the reproduction, e.g. outputting a modified copy of a scanned original
- H04N1/00867—Modifying the reproduction, e.g. outputting a modified copy of a scanned original with additional data, e.g. by adding a warning message
-
- 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
- H04N1/00838—Preventing unauthorised reproduction
- H04N1/00856—Preventive measures
- H04N1/00864—Modifying the reproduction, e.g. outputting a modified copy of a scanned original
- H04N1/00867—Modifying the reproduction, e.g. outputting a modified copy of a scanned original with additional data, e.g. by adding a warning message
- H04N1/0087—Modifying the reproduction, e.g. outputting a modified copy of a scanned original with additional data, e.g. by adding a warning message with hidden additional data, e.g. data invisible to the human eye
-
- 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
- H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N2201/3204—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a user, sender, addressee, machine or electronic recording medium
- H04N2201/3205—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to a user, sender, addressee, machine or electronic recording medium of identification information, e.g. name or ID code
-
- 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
- H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N2201/3269—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs
- H04N2201/327—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs which are undetectable to the naked eye, e.g. embedded codes
-
- 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
- H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N2201/3201—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N2201/3271—Printing or stamping
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Editing Of Facsimile Originals (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Processing (AREA)
Abstract
Provided are an image processing method and apparatus in which there is little deterioration in picture quality when specific information specifying a copying machine or the user thereof is added to image data. Pixel data in an 8 x 4 array at a predetermined position of the image data is modulated by subtracting a predetermined value .alpha. from 2 x 4 pixel data 2302 and 2 x 4 pixel data 2303 and adding the predetermined value a to 4 x 4 pixel data 2301 in such a manner that the number of pixels from which the predetermined value is subtracted and the number of pixels to which the predetermined value is added will become equal. The modulated data serves as a unit of added information. A
plurality of units of the added information are arranged on the image data and the added information is represented by the mutual positional relationship of the plurality of information units.
plurality of units of the added information are arranged on the image data and the added information is represented by the mutual positional relationship of the plurality of information units.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP01704692A JP3367959B2 (en) | 1992-01-31 | 1992-01-31 | Image processing apparatus and method |
JP4-017046 | 1992-01-31 | ||
JP04103392A JP3193098B2 (en) | 1992-02-27 | 1992-02-27 | Image processing apparatus and method |
JP4-041033 | 1992-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2088235A1 true CA2088235A1 (en) | 1993-08-01 |
CA2088235C CA2088235C (en) | 2001-11-27 |
Family
ID=26353502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002088235A Expired - Fee Related CA2088235C (en) | 1992-01-31 | 1993-01-27 | Image processing for adding images information unrecognizable to human eyes |
Country Status (4)
Country | Link |
---|---|
US (1) | US6166750A (en) |
EP (1) | EP0554115B1 (en) |
CA (1) | CA2088235C (en) |
DE (1) | DE69324290T2 (en) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6738491B1 (en) | 1992-06-30 | 2004-05-18 | Minolta Co., Ltd. | Image forming apparatus and copy management system |
US5721788A (en) | 1992-07-31 | 1998-02-24 | Corbis Corporation | Method and system for digital image signatures |
US6421145B1 (en) * | 1992-09-28 | 2002-07-16 | Canon Kabushiki Kaisha | Image processing apparatus and method using image information and additional information or an additional pattern added thereto or superposed thereon |
US6574350B1 (en) | 1995-05-08 | 2003-06-03 | Digimarc Corporation | Digital watermarking employing both frail and robust watermarks |
US6681028B2 (en) | 1995-07-27 | 2004-01-20 | Digimarc Corporation | Paper-based control of computer systems |
US6580819B1 (en) * | 1993-11-18 | 2003-06-17 | Digimarc Corporation | Methods of producing security documents having digitally encoded data and documents employing same |
US6522770B1 (en) | 1999-05-19 | 2003-02-18 | Digimarc Corporation | Management of documents and other objects using optical devices |
JP2996277B2 (en) * | 1994-06-15 | 1999-12-27 | 富士ゼロックス株式会社 | Image forming device |
GB2292036A (en) * | 1994-08-02 | 1996-02-07 | Gestetner Management Ltd | Data security monitoring system |
EP0720343B1 (en) * | 1994-12-28 | 2002-03-20 | Canon Kabushiki Kaisha | Image processing apparatus |
US6728390B2 (en) | 1995-05-08 | 2004-04-27 | Digimarc Corporation | Methods and systems using multiple watermarks |
US6721440B2 (en) | 1995-05-08 | 2004-04-13 | Digimarc Corporation | Low visibility watermarks using an out-of-phase color |
US6590996B1 (en) * | 2000-02-14 | 2003-07-08 | Digimarc Corporation | Color adaptive watermarking |
US6788800B1 (en) | 2000-07-25 | 2004-09-07 | Digimarc Corporation | Authenticating objects using embedded data |
US6829368B2 (en) | 2000-01-26 | 2004-12-07 | Digimarc Corporation | Establishing and interacting with on-line media collections using identifiers in media signals |
US6577746B1 (en) | 1999-12-28 | 2003-06-10 | Digimarc Corporation | Watermark-based object linking and embedding |
EP0901282B1 (en) | 1997-09-03 | 2006-06-28 | Hitachi, Ltd. | Method for recording and reproducing electronic watermark information |
EP0921675B1 (en) * | 1997-12-03 | 2006-07-05 | Kabushiki Kaisha Toshiba | Method of processing image information and method of preventing forgery of certificates or the like |
US6804376B2 (en) | 1998-01-20 | 2004-10-12 | Digimarc Corporation | Equipment employing watermark-based authentication function |
JP3397680B2 (en) | 1998-03-23 | 2003-04-21 | 株式会社東芝 | Method for manufacturing conductive antireflection film and method for manufacturing cathode ray tube |
JP2000155798A (en) * | 1998-11-18 | 2000-06-06 | Toshiba Corp | Method and system for device control |
US6608919B1 (en) * | 1999-11-10 | 2003-08-19 | Digimarc Corporation | Method and apparatus for encoding paper with information |
US6625297B1 (en) | 2000-02-10 | 2003-09-23 | Digimarc Corporation | Self-orienting watermarks |
US6804377B2 (en) | 2000-04-19 | 2004-10-12 | Digimarc Corporation | Detecting information hidden out-of-phase in color channels |
US7684088B2 (en) * | 2000-09-20 | 2010-03-23 | Alpvision S.A. | Method for preventing counterfeiting or alteration of a printed or engraved surface |
GB0025096D0 (en) * | 2000-10-13 | 2000-11-29 | Bank Of England | Detection of printing and coating media |
US6930759B2 (en) * | 2003-09-23 | 2005-08-16 | Eastman Kodak Company | Method and apparatus for exposing a latent watermark on film |
JP2006079448A (en) * | 2004-09-10 | 2006-03-23 | Konica Minolta Business Technologies Inc | Data control method, data control device and data control server |
WO2008146390A1 (en) * | 2007-05-31 | 2008-12-04 | Pfu Limited | Paper media information encryption system, decryption system, program and method for the same |
US8023160B2 (en) * | 2008-09-10 | 2011-09-20 | Xerox Corporation | Encoding message data in a cover contone image via halftone dot orientation |
JP4875723B2 (en) * | 2009-04-24 | 2012-02-15 | シャープ株式会社 | Image forming apparatus |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3997873A (en) * | 1975-03-31 | 1976-12-14 | Manitou Systems, Inc. | Multiterminal monitoring system |
GB2101376B (en) * | 1981-07-11 | 1986-05-21 | John Gordon Lawrence | Method and apparatus for use against counterfeiting |
EP0079153B1 (en) * | 1981-10-30 | 1985-08-21 | Crosfield Electronics Limited | Controlling register in a printing press |
DE3229616A1 (en) * | 1982-08-09 | 1984-02-09 | Siemens AG, 1000 Berlin und 8000 München | Method and circuit arrangement for superimposing graphical patterns and/or symbols |
US4908873A (en) * | 1983-05-13 | 1990-03-13 | Philibert Alex C | Document reproduction security system |
US4709274A (en) * | 1983-08-29 | 1987-11-24 | Canon Kabushiki Kaisha | Image processing apparatus |
JPH0650901B2 (en) * | 1984-04-27 | 1994-06-29 | キヤノン株式会社 | Image processing device |
US4780806A (en) * | 1984-09-26 | 1988-10-25 | Minolta Camera Kabushiki Kaisha | Control device for an apparatus |
US4723149A (en) * | 1985-05-08 | 1988-02-02 | Kabushiki Kaisha Toshiba | Image forming apparatus having a function for checking to copy a secret document |
JPS62154942A (en) * | 1985-12-27 | 1987-07-09 | Canon Inc | Facsimile equipment |
US4788575A (en) * | 1986-01-29 | 1988-11-29 | Minolta Camera Kabushiki Kaisha | Copying machine for detecting a workable document turnover unit |
US4739377A (en) * | 1986-10-10 | 1988-04-19 | Eastman Kodak Company | Confidential document reproduction method and apparatus |
JPS6461777A (en) * | 1987-09-01 | 1989-03-08 | Fuji Photo Film Co Ltd | Copying device |
DE3839299C2 (en) * | 1987-11-20 | 1995-06-01 | Canon Kk | Image processing device |
JPH01221070A (en) * | 1988-02-29 | 1989-09-04 | Casio Comput Co Ltd | Image information processor |
EP0342060B1 (en) * | 1988-05-13 | 1994-08-17 | Canon Kabushiki Kaisha | Image processing apparatus |
JP2794714B2 (en) * | 1988-06-29 | 1998-09-10 | ソニー株式会社 | Printer |
US4891666A (en) * | 1988-11-28 | 1990-01-02 | Quebecor Publitech Inc. | Copy indicator for a document |
SG126671A1 (en) * | 1989-02-10 | 2006-11-29 | Canon Kk | Apparatus for image reading or processing |
JP3053423B2 (en) * | 1990-11-01 | 2000-06-19 | キヤノン株式会社 | Printing equipment |
US5149140A (en) * | 1991-03-11 | 1992-09-22 | The Standard Register Company | Security, information document |
CA2063785C (en) * | 1991-03-25 | 1998-09-29 | Masahiro Funada | Image processing apparatus |
US5457540A (en) * | 1992-01-06 | 1995-10-10 | Canon Kabushiki Kaisha | Image processing method and apparatus in which identification information is added based on image density |
-
1993
- 1993-01-27 US US08/009,735 patent/US6166750A/en not_active Expired - Lifetime
- 1993-01-27 CA CA002088235A patent/CA2088235C/en not_active Expired - Fee Related
- 1993-01-29 EP EP93300677A patent/EP0554115B1/en not_active Expired - Lifetime
- 1993-01-29 DE DE69324290T patent/DE69324290T2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2088235C (en) | 2001-11-27 |
EP0554115B1 (en) | 1999-04-07 |
DE69324290T2 (en) | 1999-09-16 |
EP0554115A1 (en) | 1993-08-04 |
US6166750A (en) | 2000-12-26 |
DE69324290D1 (en) | 1999-05-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20130128 |