GB9815300D0 - A method and apparatus for electronic watermarking - Google Patents
A method and apparatus for electronic watermarkingInfo
- Publication number
- GB9815300D0 GB9815300D0 GBGB9815300.0A GB9815300A GB9815300D0 GB 9815300 D0 GB9815300 D0 GB 9815300D0 GB 9815300 A GB9815300 A GB 9815300A GB 9815300 D0 GB9815300 D0 GB 9815300D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- electronic watermarking
- watermarking
- electronic
- 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
-
- 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
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
- G06F21/16—Program or content traceability, e.g. by watermarking
-
- 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
- H04N1/32—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
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32203—Spatial or amplitude domain methods
-
- 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
- H04N1/32—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
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32203—Spatial or amplitude domain methods
- H04N1/32219—Spatial or amplitude domain methods involving changing the position of selected pixels, e.g. word shifting, or involving modulating the size of image components, e.g. of characters
-
- 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
- H04N1/32—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
- H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
- H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
- H04N1/32203—Spatial or amplitude domain methods
- H04N1/32261—Spatial or amplitude domain methods in binary data
-
- 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
- G06T2201/0062—Embedding of the watermark in text images, e.g. watermarking text documents using letter skew, letter distance or row distance
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Software Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Technology Law (AREA)
- Computer Hardware Design (AREA)
- Computer Security & Cryptography (AREA)
- General Engineering & Computer Science (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9815300A GB2339656B (en) | 1998-07-14 | 1998-07-14 | electronic watermarking |
AU49216/99A AU4921699A (en) | 1998-07-14 | 1999-07-14 | Electronic watermarking |
PCT/GB1999/002265 WO2000004501A1 (en) | 1998-07-14 | 1999-07-14 | Electronic watermarking |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9815300A GB2339656B (en) | 1998-07-14 | 1998-07-14 | electronic watermarking |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9815300D0 true GB9815300D0 (en) | 1998-09-09 |
GB2339656A GB2339656A (en) | 2000-02-02 |
GB2339656B GB2339656B (en) | 2003-05-21 |
Family
ID=10835521
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9815300A Expired - Fee Related GB2339656B (en) | 1998-07-14 | 1998-07-14 | electronic watermarking |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU4921699A (en) |
GB (1) | GB2339656B (en) |
WO (1) | WO2000004501A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000099501A (en) | 1998-09-17 | 2000-04-07 | Internatl Business Mach Corp <Ibm> | Method and system for padding information into document data |
US20030145206A1 (en) * | 2002-01-25 | 2003-07-31 | Jack Wolosewicz | Document authentication and verification |
US7644281B2 (en) | 2004-09-27 | 2010-01-05 | Universite De Geneve | Character and vector graphics watermark for structured electronic documents security |
CN102096787B (en) * | 2009-12-14 | 2013-06-05 | 南京信息工程大学 | Method and device for hiding information based on word2007 text segmentation |
CN109558705A (en) * | 2018-12-10 | 2019-04-02 | 万兴科技股份有限公司 | Watermark Tiling methods, device, computer equipment and storage medium based on PDF |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5467447A (en) * | 1990-07-24 | 1995-11-14 | Vogel; Peter S. | Document marking system employing context-sensitive embedded marking codes |
US5953415A (en) * | 1996-03-25 | 1999-09-14 | Sun Microsystems, Inc. | Fingerprinting plain text information |
-
1998
- 1998-07-14 GB GB9815300A patent/GB2339656B/en not_active Expired - Fee Related
-
1999
- 1999-07-14 AU AU49216/99A patent/AU4921699A/en not_active Abandoned
- 1999-07-14 WO PCT/GB1999/002265 patent/WO2000004501A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
GB2339656B (en) | 2003-05-21 |
WO2000004501A1 (en) | 2000-01-27 |
AU4921699A (en) | 2000-02-07 |
GB2339656A (en) | 2000-02-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |