GB2501414A - Auto-focus image system - Google Patents

Auto-focus image system Download PDF

Info

Publication number
GB2501414A
GB2501414A GB1311741.1A GB201311741A GB2501414A GB 2501414 A GB2501414 A GB 2501414A GB 201311741 A GB201311741 A GB 201311741A GB 2501414 A GB2501414 A GB 2501414A
Authority
GB
United Kingdom
Prior art keywords
edge
pair
auto
focus signal
image system
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.)
Withdrawn
Application number
GB1311741.1A
Other languages
English (en)
Other versions
GB201311741D0 (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
Priority claimed from PCT/IB2010/055649 external-priority patent/WO2011070514A1/en
Application filed by Individual filed Critical Individual
Publication of GB201311741D0 publication Critical patent/GB201311741D0/en
Publication of GB2501414A publication Critical patent/GB2501414A/en
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • 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
    • 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/13—Edge detection
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • 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
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10141—Special mode during image acquisition
    • G06T2207/10148—Varying focus
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Devices (AREA)
  • Image Analysis (AREA)
  • Automatic Focus Adjustment (AREA)
  • Image Processing (AREA)
  • Focusing (AREA)
GB1311741.1A 2010-12-07 2011-06-09 Auto-focus image system Withdrawn GB2501414A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/IB2010/055649 WO2011070514A1 (en) 2009-12-07 2010-12-07 Auto-focus image system
PCT/IB2011/052515 WO2012076992A1 (en) 2010-12-07 2011-06-09 Auto-focus image system

Publications (2)

Publication Number Publication Date
GB201311741D0 GB201311741D0 (en) 2013-08-14
GB2501414A true GB2501414A (en) 2013-10-23

Family

ID=44628863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1311741.1A Withdrawn GB2501414A (en) 2010-12-07 2011-06-09 Auto-focus image system

Country Status (9)

Country Link
EP (1) EP2649787A1 (enExample)
JP (1) JP2014504375A (enExample)
AU (1) AU2011340207A1 (enExample)
CA (1) CA2820856A1 (enExample)
DE (1) DE112011104256T5 (enExample)
GB (1) GB2501414A (enExample)
MX (1) MX2013006517A (enExample)
SG (1) SG190451A1 (enExample)
WO (1) WO2012076992A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017125799A1 (de) * 2017-11-06 2019-05-09 Carl Zeiss Industrielle Messtechnik Gmbh Reduktion von Bildstörungen in Bildern
CN112969027B (zh) * 2021-04-02 2022-08-16 浙江大华技术股份有限公司 电动镜头的聚焦方法和装置、存储介质及电子设备
CN114815121A (zh) * 2022-02-22 2022-07-29 湖北三赢兴光电科技股份有限公司 一种摄像模组的快速调焦方法及系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020114015A1 (en) * 2000-12-21 2002-08-22 Shinichi Fujii Apparatus and method for controlling optical system
US20030099044A1 (en) * 2001-11-29 2003-05-29 Minolta Co. Ltd. Autofocusing apparatus
US20060029284A1 (en) * 2004-08-07 2006-02-09 Stmicroelectronics Ltd. Method of determining a measure of edge strength and focus
US20060062484A1 (en) * 2004-09-22 2006-03-23 Aas Eric F Systems and methods for arriving at an auto focus Figure of Merit
US20090102963A1 (en) * 2007-10-22 2009-04-23 Yunn-En Yeo Auto-focus image system
US20100128144A1 (en) * 2008-11-26 2010-05-27 Hiok Nam Tay Auto-focus image system
GB2475983A (en) * 2009-12-07 2011-06-08 Hiok Nam Tay Reflection symmetry of gradient profile associated with an edge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3482013B2 (ja) * 1993-09-22 2003-12-22 ペンタックス株式会社 光学系のピント評価方法、調整方法、調整装置、およびチャート装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020114015A1 (en) * 2000-12-21 2002-08-22 Shinichi Fujii Apparatus and method for controlling optical system
US20030099044A1 (en) * 2001-11-29 2003-05-29 Minolta Co. Ltd. Autofocusing apparatus
US20060029284A1 (en) * 2004-08-07 2006-02-09 Stmicroelectronics Ltd. Method of determining a measure of edge strength and focus
US20060062484A1 (en) * 2004-09-22 2006-03-23 Aas Eric F Systems and methods for arriving at an auto focus Figure of Merit
US20090102963A1 (en) * 2007-10-22 2009-04-23 Yunn-En Yeo Auto-focus image system
US20100128144A1 (en) * 2008-11-26 2010-05-27 Hiok Nam Tay Auto-focus image system
GB2475983A (en) * 2009-12-07 2011-06-08 Hiok Nam Tay Reflection symmetry of gradient profile associated with an edge

Also Published As

Publication number Publication date
MX2013006517A (es) 2013-12-06
CA2820856A1 (en) 2012-06-14
AU2011340207A1 (en) 2013-07-18
EP2649787A1 (en) 2013-10-16
DE112011104256T5 (de) 2014-02-13
GB201311741D0 (en) 2013-08-14
WO2012076992A1 (en) 2012-06-14
JP2014504375A (ja) 2014-02-20
SG190451A1 (en) 2013-07-31

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