GB2495424B - Auto-focus image system - Google Patents

Auto-focus image system

Info

Publication number
GB2495424B
GB2495424B GB1222601.5A GB201222601A GB2495424B GB 2495424 B GB2495424 B GB 2495424B GB 201222601 A GB201222601 A GB 201222601A GB 2495424 B GB2495424 B GB 2495424B
Authority
GB
United Kingdom
Prior art keywords
focus
edge
width
focus signal
prescribed direction
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.)
Expired - Fee Related
Application number
GB1222601.5A
Other languages
English (en)
Other versions
GB2495424A (en
GB201222601D0 (en
Inventor
Hiok Nam Tay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB201222601D0 publication Critical patent/GB201222601D0/en
Publication of GB2495424A publication Critical patent/GB2495424A/en
Application granted granted Critical
Publication of GB2495424B publication Critical patent/GB2495424B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G02B7/365—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals by analysis of the spatial frequency components of the image
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • 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
    • H04N23/631—Graphical user interfaces [GUI] specially adapted for controlling image capture or setting capture parameters
    • 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
    • H04N23/633—Control of cameras or camera modules by using electronic viewfinders for displaying additional information relating to control or operation of the camera
    • H04N23/635—Region indicators; Field of view indicators
    • 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
    • H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method
    • 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
    • H04N23/675—Focus control based on electronic image sensor signals comprising setting of focusing regions

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Optics & Photonics (AREA)
  • Human Computer Interaction (AREA)
  • Automatic Focus Adjustment (AREA)
  • Focusing (AREA)
  • Studio Devices (AREA)
  • Image Analysis (AREA)
GB1222601.5A 2010-05-26 2010-05-27 Auto-focus image system Expired - Fee Related GB2495424B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US34869910P 2010-05-26 2010-05-26
JP2010122100A JP5435362B2 (ja) 2010-05-26 2010-05-27 オートフォーカス画像システム

Publications (3)

Publication Number Publication Date
GB201222601D0 GB201222601D0 (en) 2013-01-30
GB2495424A GB2495424A (en) 2013-04-10
GB2495424B true GB2495424B (en) 2013-12-11

Family

ID=45413433

Family Applications (6)

Application Number Title Priority Date Filing Date
GB1222601.5A Expired - Fee Related GB2495424B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1314740.0A Expired - Fee Related GB2505318B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1203296.7A Expired - Fee Related GB2487144B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1203294.2A Expired - Fee Related GB2487143B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1203290.0A Expired - Fee Related GB2487142B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1200088.1A Expired - Fee Related GB2484223B (en) 2010-05-26 2010-05-27 Auto-focus image system

Family Applications After (5)

Application Number Title Priority Date Filing Date
GB1314740.0A Expired - Fee Related GB2505318B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1203296.7A Expired - Fee Related GB2487144B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1203294.2A Expired - Fee Related GB2487143B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1203290.0A Expired - Fee Related GB2487142B (en) 2010-05-26 2010-05-27 Auto-focus image system
GB1200088.1A Expired - Fee Related GB2484223B (en) 2010-05-26 2010-05-27 Auto-focus image system

Country Status (10)

Country Link
US (1) US9031352B2 (https=)
JP (6) JP5532415B2 (https=)
CN (2) CN102948142B (https=)
AU (1) AU2010353808A1 (https=)
CA (1) CA2799891A1 (https=)
DE (1) DE112010005589T5 (https=)
GB (6) GB2495424B (https=)
MY (1) MY154248A (https=)
SG (1) SG185345A1 (https=)
WO (1) WO2011148233A1 (https=)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2495424B (en) * 2010-05-26 2013-12-11 Hiok Nam Tay Auto-focus image system
CN104038699B (zh) * 2014-06-27 2016-04-06 努比亚技术有限公司 对焦状态的提示方法和拍摄装置
DE102014111150B3 (de) * 2014-08-05 2015-07-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung, Verfahren und Computerprogramm zur Ermittlung eines Schärfemasses für ein Bild
WO2017208699A1 (ja) * 2016-05-30 2017-12-07 ソニー株式会社 情報処理装置と情報処理方法とプログラムおよび撮像システム
CN108803204B (zh) * 2017-04-28 2021-03-12 宏碁股份有限公司 投影机及投影机的操作方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2475983A (en) * 2009-12-07 2011-06-08 Hiok Nam Tay Reflection symmetry of gradient profile associated with an edge

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Also Published As

Publication number Publication date
AU2010353808A1 (en) 2012-12-06
DE112010005589T5 (de) 2013-03-14
GB2484223A (en) 2012-04-04
GB2487143A (en) 2012-07-11
GB2487142B (en) 2012-12-12
CA2799891A1 (en) 2011-12-01
JP2014134811A (ja) 2014-07-24
JP2016177293A (ja) 2016-10-06
JP5825566B2 (ja) 2015-12-02
CN105898146A (zh) 2016-08-24
GB2484223B (en) 2014-07-09
JP2016028294A (ja) 2016-02-25
HK1185149A1 (en) 2014-02-07
GB201200088D0 (en) 2012-02-15
GB201203296D0 (en) 2012-04-11
WO2011148233A1 (en) 2011-12-01
JP5532415B2 (ja) 2014-06-25
CN102948142B (zh) 2016-05-25
GB201314740D0 (en) 2013-10-02
GB2505318A (en) 2014-02-26
GB2487144A (en) 2012-07-11
GB201203294D0 (en) 2012-04-11
GB2487144B (en) 2014-11-19
HK1171885A1 (en) 2013-04-05
GB2495424A (en) 2013-04-10
GB201203290D0 (en) 2012-04-11
JP2011248085A (ja) 2011-12-08
JP2014078021A (ja) 2014-05-01
JP5435362B2 (ja) 2014-03-05
US9031352B2 (en) 2015-05-12
GB2487142A (en) 2012-07-11
JP2011248151A (ja) 2011-12-08
GB201222601D0 (en) 2013-01-30
HK1171884A1 (en) 2013-04-05
MY154248A (en) 2015-05-29
US20120008872A1 (en) 2012-01-12
GB2487143B (en) 2012-12-12
CN102948142A (zh) 2013-02-27
SG185345A1 (en) 2012-12-28
GB2505318B (en) 2014-08-13

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