JP4004528B2 - デジタル像符牒の処理方法及びシステム - Google Patents
デジタル像符牒の処理方法及びシステム Download PDFInfo
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- JP4004528B2 JP4004528B2 JP2006177155A JP2006177155A JP4004528B2 JP 4004528 B2 JP4004528 B2 JP 4004528B2 JP 2006177155 A JP2006177155 A JP 2006177155A JP 2006177155 A JP2006177155 A JP 2006177155A JP 4004528 B2 JP4004528 B2 JP 4004528B2
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- 238000009795 derivation Methods 0.000 description 2
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- 238000012935 Averaging Methods 0.000 description 1
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- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
- G06T1/005—Robust watermarking, e.g. average attack or collusion attack resistant
- G06T1/0064—Geometric transfor invariant watermarking, e.g. affine transform invariant
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
- G06Q20/30—Payment architectures, schemes or protocols characterised by the use of specific devices or networks
- G06Q20/34—Payment architectures, schemes or protocols characterised by the use of specific devices or networks using cards, e.g. integrated circuit [IC] cards or magnetic cards
- G06Q20/341—Active cards, i.e. cards including their own processing means, e.g. including an IC or chip
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- 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
- G07D7/004—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 digital security elements, e.g. information coded on a magnetic thread or strip
- G07D7/0047—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 digital security elements, e.g. information coded on a magnetic thread or strip using checkcodes, e.g. coded numbers derived from serial number and denomination
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- G07D7/0054—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations involving markings the properties of which are altered from original properties
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- G07D7/2033—Matching unique patterns, i.e. patterns that are unique to each individual paper
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- G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
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- H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
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- 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
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- 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
- H04N1/32288—Multiple embedding, e.g. cocktail embedding, or redundant embedding, e.g. repeating the additional information at a plurality of locations in the image
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- 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
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- G06T2201/005—Image watermarking
- G06T2201/0081—Image watermarking whereby both original and watermarked images are required at decoder, e.g. destination-based, non-blind, non-oblivious
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- H04N2201/3225—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document
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- 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
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Computer Security & Cryptography (AREA)
- Accounting & Taxation (AREA)
- Strategic Management (AREA)
- General Business, Economics & Management (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Networks & Wireless Communication (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Editing Of Facsimile Originals (AREA)
- Image Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Analysis (AREA)
- Television Systems (AREA)
Description
26A 26B 26C 26D 26E 26F 26G
小さな近隣 7.67 10.56 12.89 14.11 13.11 11.56 10.0
大きな近隣 8.76 10.56 12.0 12.52 12.52 11.36 9.8
平均の差 -1.09 0.0 0.89 1.59 0.59 0.2 0.2
ピクセル26Aないし26Gによると、ピクセル26Dに相対的な最大があり、その平均の差1.59は、その行において検査した他のピクセルに対する平均の差より大きい。ピクセル26Dが単なる小さな変動ではなくて相対的な最大であるかどうかを判断するためには、その平均の差を、大きなエリアにおいてそれを取り巻いているピクセルに対する平均の差と比較しなければならない。
12 コンピュータ
14 ディスプレイモニタ
16 キーボード
18 マウス
20 デジタルスキャナ
22 プリンタ
23 記憶媒体
24 デジタル像
26 ピクセル
Claims (1)
- 符牒を埋め込むために像をマークする方法であって、その複数のポイントで像を変化させる段階を含む方法において、像は該像内の複数の位置にある複数のピクセルより成り、そして、該方法は、変化を生じさせる位置をランダムに選択する段階を含み、
前記符牒はNビットの符牒であり、Nは少なくとも1であり、前記像内のピクセルは値を有し、
該方法は、前記符牒の各ビットについて、該ビットが埋め込まれる前記像内の位置をランダムに選択し、選択した位置を含むブロック内の複数のピクセルの値を該ビットの値に基づいて変更し、前記変更は、前記ブロックにおけるピクセルの値に応じて該変更の量を調整することによって、本質的に人間に分からないようになされる、
方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/923,841 US5721788A (en) | 1992-07-31 | 1992-07-31 | Method and system for digital image signatures |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005136454A Division JP3837432B2 (ja) | 1992-07-31 | 2005-05-09 | デジタル像符牒の処理方法及びシステム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007006504A JP2007006504A (ja) | 2007-01-11 |
JP4004528B2 true JP4004528B2 (ja) | 2007-11-07 |
Family
ID=25449340
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5209924A Pending JPH06343128A (ja) | 1992-07-31 | 1993-08-02 | デジタル像符牒の処理方法及びシステム |
JP2005136454A Expired - Lifetime JP3837432B2 (ja) | 1992-07-31 | 2005-05-09 | デジタル像符牒の処理方法及びシステム |
JP2006177155A Expired - Lifetime JP4004528B2 (ja) | 1992-07-31 | 2006-06-27 | デジタル像符牒の処理方法及びシステム |
JP2006177158A Expired - Lifetime JP4009655B2 (ja) | 1992-07-31 | 2006-06-27 | デジタル像符牒の処理方法及びシステム |
JP2007108405A Pending JP2007251980A (ja) | 1992-07-31 | 2007-04-17 | デジタル像符牒の処理方法及びシステム |
JP2007208188A Expired - Lifetime JP4444317B2 (ja) | 1992-07-31 | 2007-08-09 | デジタル像符牒の処理方法 |
JP2008208687A Expired - Lifetime JP4485585B2 (ja) | 1992-07-31 | 2008-08-13 | デジタル像符牒の処理方法及びシステム |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5209924A Pending JPH06343128A (ja) | 1992-07-31 | 1993-08-02 | デジタル像符牒の処理方法及びシステム |
JP2005136454A Expired - Lifetime JP3837432B2 (ja) | 1992-07-31 | 2005-05-09 | デジタル像符牒の処理方法及びシステム |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006177158A Expired - Lifetime JP4009655B2 (ja) | 1992-07-31 | 2006-06-27 | デジタル像符牒の処理方法及びシステム |
JP2007108405A Pending JP2007251980A (ja) | 1992-07-31 | 2007-04-17 | デジタル像符牒の処理方法及びシステム |
JP2007208188A Expired - Lifetime JP4444317B2 (ja) | 1992-07-31 | 2007-08-09 | デジタル像符牒の処理方法 |
JP2008208687A Expired - Lifetime JP4485585B2 (ja) | 1992-07-31 | 2008-08-13 | デジタル像符牒の処理方法及びシステム |
Country Status (4)
Country | Link |
---|---|
US (20) | US5721788A (ja) |
EP (1) | EP0581317A3 (ja) |
JP (7) | JPH06343128A (ja) |
CA (2) | CA2101673C (ja) |
Families Citing this family (648)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6417969B1 (en) | 1988-07-01 | 2002-07-09 | Deluca Michael | Multiple viewer headset display apparatus and method with second person icon display |
US6738491B1 (en) * | 1992-06-30 | 2004-05-18 | Minolta Co., Ltd. | Image forming apparatus and copy management system |
US5987127A (en) * | 1992-06-30 | 1999-11-16 | Minolta Co., Ltd. | Image forming apparatus and copy management system |
US6301369B2 (en) * | 1992-07-31 | 2001-10-09 | Digimarc Corporation | Image marking to permit later identification |
US5721788A (en) * | 1992-07-31 | 1998-02-24 | Corbis Corporation | Method and system for digital image signatures |
US6944298B1 (en) * | 1993-11-18 | 2005-09-13 | Digimare Corporation | Steganographic encoding and decoding of auxiliary codes in media signals |
US6757406B2 (en) | 1993-11-18 | 2004-06-29 | Digimarc Corporation | Steganographic image processing |
US7116781B2 (en) * | 1993-11-18 | 2006-10-03 | Digimarc Corporation | Counteracting geometric distortions in watermarking |
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