ATE475260T1 - Schnelles fokusbeurteilungssystem und -verfahren zur bilderfassung - Google Patents

Schnelles fokusbeurteilungssystem und -verfahren zur bilderfassung

Info

Publication number
ATE475260T1
ATE475260T1 AT99960587T AT99960587T ATE475260T1 AT E475260 T1 ATE475260 T1 AT E475260T1 AT 99960587 T AT99960587 T AT 99960587T AT 99960587 T AT99960587 T AT 99960587T AT E475260 T1 ATE475260 T1 AT E475260T1
Authority
AT
Austria
Prior art keywords
imager
focus assessment
focus
iris
assessment processor
Prior art date
Application number
AT99960587T
Other languages
English (en)
Inventor
John G Daugman
Original Assignee
Iridian Technologies Inc
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 Iridian Technologies Inc filed Critical Iridian Technologies Inc
Application granted granted Critical
Publication of ATE475260T1 publication Critical patent/ATE475260T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/40—Analysis of texture
    • G06T7/41—Analysis of texture based on statistical description of texture
    • G06T7/42—Analysis of texture based on statistical description of texture using transform domain methods
    • 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
    • G06V40/18—Eye characteristics, e.g. of the iris
    • 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
    • G06V40/18—Eye characteristics, e.g. of the iris
    • G06V40/19—Sensors therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/63—Control of cameras or camera modules by using electronic viewfinders
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20048—Transform domain processing
    • G06T2207/20056—Discrete and fast Fourier transform, [DFT, FFT]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30004—Biomedical image processing
    • G06T2207/30041—Eye; Retina; Ophthalmic

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Human Computer Interaction (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Probability & Statistics with Applications (AREA)
  • Studio Devices (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
AT99960587T 1998-11-25 1999-11-24 Schnelles fokusbeurteilungssystem und -verfahren zur bilderfassung ATE475260T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10996098P 1998-11-25 1998-11-25
PCT/US1999/028031 WO2000033569A1 (en) 1998-11-25 1999-11-24 Fast focus assessment system and method for imaging

Publications (1)

Publication Number Publication Date
ATE475260T1 true ATE475260T1 (de) 2010-08-15

Family

ID=22330510

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99960587T ATE475260T1 (de) 1998-11-25 1999-11-24 Schnelles fokusbeurteilungssystem und -verfahren zur bilderfassung

Country Status (6)

Country Link
EP (1) EP1171996B1 (de)
AT (1) ATE475260T1 (de)
AU (1) AU1745000A (de)
CA (1) CA2372124C (de)
DE (1) DE69942619D1 (de)
WO (1) WO2000033569A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002229955A (ja) * 2001-02-02 2002-08-16 Matsushita Electric Ind Co Ltd 情報端末装置及び認証システム
EP1286539A1 (de) * 2001-08-23 2003-02-26 BRITISH TELECOMMUNICATIONS public limited company Kamerasteuerung
AU2003212540A1 (en) 2002-03-22 2003-10-08 British Telecommunications Public Limited Company Anomaly recognition method for data streams
ATE315257T1 (de) 2002-03-22 2006-02-15 British Telecomm Vergleichen von mustern
DE10246411A1 (de) * 2002-10-05 2004-04-15 ASTRA Gesellschaft für Asset Management mbH & Co. KG Vorrichtung zur berührungslosen optischen Erfassung biometrischer Eigenschaften wenigstens eines Körperteils
GB0229625D0 (en) 2002-12-19 2003-01-22 British Telecomm Searching images
GB0328326D0 (en) 2003-12-05 2004-01-07 British Telecomm Image processing
ES2312010T3 (es) 2004-09-17 2009-02-16 British Telecommunications Public Limited Company Analisis de patrones.
EP1732030A1 (de) 2005-06-10 2006-12-13 BRITISH TELECOMMUNICATIONS public limited company Mustervergleich
WO2007012798A1 (en) 2005-07-28 2007-02-01 British Telecommunications Public Limited Company Image analysis
EP1798961A1 (de) 2005-12-19 2007-06-20 BRITISH TELECOMMUNICATIONS public limited company Fokussierungsverfahren
US7855743B2 (en) 2006-09-08 2010-12-21 Sony Corporation Image capturing and displaying apparatus and image capturing and displaying method
EP2775349B1 (de) * 2007-03-08 2021-08-11 Cellavision AB Verfahren zur Bestimmung einer Position im Fokus und Sichtprüfsystem
US9025874B2 (en) 2013-02-19 2015-05-05 Blackberry Limited Method and system for generating shallow depth of field effect
US10498976B2 (en) 2014-12-05 2019-12-03 Microsoft Technology Licensing, Llc Virtual focus feedback
DE102015107474B4 (de) 2015-05-12 2019-03-14 Bundesdruckerei Gmbh Verfahren zum Bestimmen einer individuellen Schärfe eines Bildes einer Iris und Verfahren zur Personenprüfung
WO2020195215A1 (ja) * 2019-03-25 2020-10-01 日本電気株式会社 画像処理装置および画像処理方法
CN112835172A (zh) * 2020-12-31 2021-05-25 华兴源创(成都)科技有限公司 一种定倍率成像的自动对焦方法及***
CN117041531B (zh) * 2023-09-04 2024-03-15 无锡维凯科技有限公司 一种基于图像质量评估的手机摄像头聚焦检测方法和***

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2105288B2 (de) * 1970-02-14 1973-03-15 Kabushiki Kaisha Ricoh, Tokio Kamera mit automatischer scharfeinstellung
JPS5413330A (en) * 1977-07-01 1979-01-31 Olympus Optical Co Ltd Automatic focus adjusting system
JPS568140A (en) * 1979-07-02 1981-01-27 Dainippon Screen Mfg Co Ltd Emphasizing method of sharpness in image scanning and recording apparatus
DE3538406A1 (de) * 1985-10-29 1987-04-30 Will Wetzlar Gmbh Eine auf elektronischer basis arbeitende recheneinrichtung
US4876602A (en) * 1988-05-02 1989-10-24 Hughes Aircraft Company Electronic focus correction by signal convolution
US5193124A (en) * 1989-06-29 1993-03-09 The Research Foundation Of State University Of New York Computational methods and electronic camera apparatus for determining distance of objects, rapid autofocusing, and obtaining improved focus images
JP3175175B2 (ja) * 1991-03-01 2001-06-11 ミノルタ株式会社 合焦検出装置
US5315699A (en) * 1991-03-20 1994-05-24 Research Development Corporation Of Japan Filtering operation method for very high-speed image processing system
WO1993016442A1 (en) * 1992-02-18 1993-08-19 Neopath, Inc. Method for identifying objects using data processing techniques
US5572596A (en) * 1994-09-02 1996-11-05 David Sarnoff Research Center, Inc. Automated, non-invasive iris recognition system and method
US5557097A (en) * 1994-09-20 1996-09-17 Neopath, Inc. Cytological system autofocus integrity checking apparatus
US5621519A (en) * 1995-07-31 1997-04-15 Neopath, Inc. Imaging system transfer function control method and apparatus

Also Published As

Publication number Publication date
CA2372124A1 (en) 2000-06-08
AU1745000A (en) 2000-06-19
EP1171996B1 (de) 2010-07-21
EP1171996A1 (de) 2002-01-16
DE69942619D1 (de) 2010-09-02
CA2372124C (en) 2008-07-22
WO2000033569A1 (en) 2000-06-08
EP1171996A4 (de) 2005-05-11

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Legal Events

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