IL77206A - Conversion of an image represented by a field of pixels in a gray scale to a field of pixels in binary scale - Google Patents
Conversion of an image represented by a field of pixels in a gray scale to a field of pixels in binary scaleInfo
- Publication number
- IL77206A IL77206A IL77206A IL7720685A IL77206A IL 77206 A IL77206 A IL 77206A IL 77206 A IL77206 A IL 77206A IL 7720685 A IL7720685 A IL 7720685A IL 77206 A IL77206 A IL 77206A
- Authority
- IL
- Israel
- Prior art keywords
- pixels
- field
- scale
- conversion
- image represented
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
- G07C9/37—Individual registration on entry or exit not involving the use of a pass in combination with an identity check using biometric data, e.g. fingerprints, iris scans or voice recognition
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/28—Quantising the image, e.g. histogram thresholding for discrimination between background and foreground patterns
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/1347—Preprocessing; Feature extraction
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Collating Specific Patterns (AREA)
- Image Analysis (AREA)
- Image Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/679,622 US4685145A (en) | 1984-12-07 | 1984-12-07 | Conversion of an image represented by a field of pixels in a gray scale to a field of pixels in binary scale |
Publications (1)
Publication Number | Publication Date |
---|---|
IL77206A true IL77206A (en) | 1990-07-12 |
Family
ID=24727654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL77206A IL77206A (en) | 1984-12-07 | 1985-12-03 | Conversion of an image represented by a field of pixels in a gray scale to a field of pixels in binary scale |
Country Status (8)
Country | Link |
---|---|
US (1) | US4685145A (xx) |
EP (1) | EP0184775A3 (xx) |
JP (1) | JPS61190675A (xx) |
CA (1) | CA1234218A (xx) |
DK (1) | DK567185A (xx) |
FI (1) | FI854807A (xx) |
IL (1) | IL77206A (xx) |
NO (1) | NO854914L (xx) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5067162A (en) * | 1986-06-30 | 1991-11-19 | Identix Incorporated | Method and apparatus for verifying identity using image correlation |
US4896363A (en) * | 1987-05-28 | 1990-01-23 | Thumbscan, Inc. | Apparatus and method for matching image characteristics such as fingerprint minutiae |
US5054101A (en) * | 1989-02-28 | 1991-10-01 | E. I. Du Pont De Nemours And Company | Thresholding of gray level images using fractal dimensions |
US5341228A (en) * | 1990-12-04 | 1994-08-23 | Research Corporation Technologies | Method and apparatus for halftone rendering of a gray scale image using a blue noise mask |
US8352400B2 (en) | 1991-12-23 | 2013-01-08 | Hoffberg Steven M | Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore |
US10361802B1 (en) | 1999-02-01 | 2019-07-23 | Blanding Hovenweep, Llc | Adaptive pattern recognition based control system and method |
US5982943A (en) * | 1992-09-14 | 1999-11-09 | Startek Eng. Inc. | Method for determining background or object pixel for digitizing image data |
US6002787A (en) * | 1992-10-27 | 1999-12-14 | Jasper Consulting, Inc. | Fingerprint analyzing and encoding system |
HU212147B (en) * | 1994-02-15 | 1996-06-28 | Kfki Recoware Szamitastechnika | Method for analysing patterns |
US5659626A (en) * | 1994-10-20 | 1997-08-19 | Calspan Corporation | Fingerprint identification system |
US5796858A (en) * | 1996-05-10 | 1998-08-18 | Digital Persona, Inc. | Fingerprint sensing system using a sheet prism |
JPH10177589A (ja) * | 1996-12-18 | 1998-06-30 | Mitsubishi Electric Corp | パターン比較検証装置、パターン比較検証方法およびパターン比較検証プログラムを記録した媒体 |
US6125192A (en) * | 1997-04-21 | 2000-09-26 | Digital Persona, Inc. | Fingerprint recognition system |
US6035398A (en) * | 1997-11-14 | 2000-03-07 | Digitalpersona, Inc. | Cryptographic key generation using biometric data |
US6122737A (en) * | 1997-11-14 | 2000-09-19 | Digital Persona, Inc. | Method for using fingerprints to distribute information over a network |
US6324310B1 (en) | 1998-06-02 | 2001-11-27 | Digital Persona, Inc. | Method and apparatus for scanning a fingerprint using a linear sensor |
US6188781B1 (en) | 1998-07-28 | 2001-02-13 | Digital Persona, Inc. | Method and apparatus for illuminating a fingerprint through side illumination of a platen |
US6950539B2 (en) * | 1998-09-16 | 2005-09-27 | Digital Persona | Configurable multi-function touchpad device |
US6175407B1 (en) | 1998-12-17 | 2001-01-16 | Identix Incorporated | Apparatus and method for optically imaging features on the surface of a hand |
US8364136B2 (en) | 1999-02-01 | 2013-01-29 | Steven M Hoffberg | Mobile system, a method of operating mobile system and a non-transitory computer readable medium for a programmable control of a mobile system |
US7904187B2 (en) | 1999-02-01 | 2011-03-08 | Hoffberg Steven M | Internet appliance system and method |
US6097035A (en) * | 1999-02-22 | 2000-08-01 | Digital Persona, Inc. | Fingerprint detection apparatus with partial fingerprint images |
US7522745B2 (en) * | 2000-08-31 | 2009-04-21 | Grasso Donald P | Sensor and imaging system |
US7359553B1 (en) * | 2001-02-16 | 2008-04-15 | Bio-Key International, Inc. | Image identification system |
KR100432491B1 (ko) | 2001-08-31 | 2004-05-22 | (주)니트 젠 | 융선방향 모델을 이용한 지문 특징데이터 추출방법 |
US7321699B2 (en) | 2002-09-06 | 2008-01-22 | Rytec Corporation | Signal intensity range transformation apparatus and method |
US7155040B2 (en) * | 2004-06-29 | 2006-12-26 | Bio-Key International, Inc. | Generation of quality field information in the context of image processing |
JP2008153137A (ja) * | 2006-12-19 | 2008-07-03 | Fujitsu Ltd | プリント基板向け接続端子およびプリント基板ユニット並びに電子機器 |
JP6724999B2 (ja) * | 2016-10-21 | 2020-07-15 | 日本電気株式会社 | 合成装置、合成方法及びプログラム |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3973239A (en) * | 1973-10-17 | 1976-08-03 | Hitachi, Ltd. | Pattern preliminary processing system |
IT1055651B (it) * | 1975-11-03 | 1982-01-11 | Elsag | Sistema elettronico per la lettura di simboli |
US4322163A (en) * | 1977-10-25 | 1982-03-30 | Fingermatrix Inc. | Finger identification |
US4205341A (en) * | 1978-01-24 | 1980-05-27 | Nippon Telegraph And Telephone Public Corporation | Picture signal coding apparatus |
JPS55120265A (en) * | 1979-03-07 | 1980-09-16 | Ricoh Co Ltd | Picture forecasting restoring method |
FR2466153A1 (fr) * | 1979-09-21 | 1981-03-27 | Thomson Csf | Dispositif de decision noir ou blanc a seuil autoadaptatif pour systeme d'analyse de document et emetteur de telecopie comportant un tel dispositif |
US4398256A (en) * | 1981-03-16 | 1983-08-09 | Hughes Aircraft Company | Image processing architecture |
-
1984
- 1984-12-07 US US06/679,622 patent/US4685145A/en not_active Expired - Fee Related
-
1985
- 1985-12-03 IL IL77206A patent/IL77206A/xx unknown
- 1985-12-04 FI FI854807A patent/FI854807A/fi not_active IP Right Cessation
- 1985-12-05 NO NO854914A patent/NO854914L/no unknown
- 1985-12-05 EP EP85115470A patent/EP0184775A3/en not_active Withdrawn
- 1985-12-06 JP JP60273540A patent/JPS61190675A/ja active Pending
- 1985-12-06 CA CA000497068A patent/CA1234218A/en not_active Expired
- 1985-12-06 DK DK567185A patent/DK567185A/da not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
EP0184775A2 (en) | 1986-06-18 |
FI854807A (fi) | 1986-06-08 |
CA1234218A (en) | 1988-03-15 |
US4685145A (en) | 1987-08-04 |
DK567185D0 (da) | 1985-12-06 |
EP0184775A3 (en) | 1988-11-02 |
NO854914L (no) | 1986-06-09 |
DK567185A (da) | 1986-06-08 |
FI854807A0 (fi) | 1985-12-04 |
JPS61190675A (ja) | 1986-08-25 |
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