GB2247378B - Automatic focusing device - Google Patents

Automatic focusing device

Info

Publication number
GB2247378B
GB2247378B GB9117963A GB9117963A GB2247378B GB 2247378 B GB2247378 B GB 2247378B GB 9117963 A GB9117963 A GB 9117963A GB 9117963 A GB9117963 A GB 9117963A GB 2247378 B GB2247378 B GB 2247378B
Authority
GB
United Kingdom
Prior art keywords
automatic focusing
focusing device
automatic
focusing
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 - Lifetime
Application number
GB9117963A
Other versions
GB2247378A (en
GB9117963D0 (en
Inventor
Kunihiko Yamada
Akihiro Fujiwara
Masamichi Toyama
Hirofumi Suda
Kitahiro Kanedas
Katsuji Yoshimura
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.)
Canon Inc
Original Assignee
Canon 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
Priority claimed from JP62219670A external-priority patent/JP2659964B2/en
Priority claimed from JP62228993A external-priority patent/JP2713918B2/en
Priority claimed from JP63079814A external-priority patent/JPH01251878A/en
Priority claimed from GB8820363A external-priority patent/GB2209446B/en
Priority to GB9117963A priority Critical patent/GB2247378B/en
Application filed by Canon Inc filed Critical Canon Inc
Publication of GB9117963D0 publication Critical patent/GB9117963D0/en
Publication of GB2247378A publication Critical patent/GB2247378A/en
Priority to GB9207063A priority patent/GB2251999B/en
Publication of GB2247378B publication Critical patent/GB2247378B/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
    • 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
    • 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
    • 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
    • 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
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • 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
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6811—Motion detection based on the image signal
    • 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
    • H04N23/68—Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
    • H04N23/681—Motion detection
    • H04N23/6815—Motion detection by distinguishing pan or tilt from motion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/144—Movement detection
    • H04N5/145—Movement estimation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
GB9117963A 1987-09-02 1991-08-20 Automatic focusing device Expired - Lifetime GB2247378B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9117963A GB2247378B (en) 1987-09-02 1991-08-20 Automatic focusing device
GB9207063A GB2251999B (en) 1987-09-02 1992-03-31 Automatic focusing device

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP62219670A JP2659964B2 (en) 1987-09-02 1987-09-02 Automatic focusing device
JP62228993A JP2713918B2 (en) 1987-09-12 1987-09-12 Automatic focusing device
JP63079814A JPH01251878A (en) 1988-03-30 1988-03-30 Automatic focusing device
GB8820363A GB2209446B (en) 1987-09-02 1988-08-26 Automatic focusing device
GB9117963A GB2247378B (en) 1987-09-02 1991-08-20 Automatic focusing device

Publications (3)

Publication Number Publication Date
GB9117963D0 GB9117963D0 (en) 1991-10-09
GB2247378A GB2247378A (en) 1992-02-26
GB2247378B true GB2247378B (en) 1992-09-30

Family

ID=27450172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9117963A Expired - Lifetime GB2247378B (en) 1987-09-02 1991-08-20 Automatic focusing device

Country Status (1)

Country Link
GB (1) GB2247378B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413368C1 (en) * 1994-04-19 1995-09-28 Wilfried Donner Method of optical focussing of object image
KR100252080B1 (en) * 1997-10-10 2000-04-15 윤종용 Apparatus for stabilizing video signals through revising the motion of the video signals using bit plane matching and a stabilizing method therefor
JPH11127380A (en) * 1997-10-23 1999-05-11 Mitsubishi Electric Engineering Co Ltd Image pickup device
US10136061B2 (en) 2015-01-30 2018-11-20 Microsoft Technology Licensing, Llc Automatic processing of automatic image capture parameter adjustment

Also Published As

Publication number Publication date
GB2247378A (en) 1992-02-26
GB9117963D0 (en) 1991-10-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070826