CA2019943A1 - Automatic exposure adjusting apparatus for automatically adjusting exposure by fuzzy inference - Google Patents

Automatic exposure adjusting apparatus for automatically adjusting exposure by fuzzy inference

Info

Publication number
CA2019943A1
CA2019943A1 CA2019943A CA2019943A CA2019943A1 CA 2019943 A1 CA2019943 A1 CA 2019943A1 CA 2019943 A CA2019943 A CA 2019943A CA 2019943 A CA2019943 A CA 2019943A CA 2019943 A1 CA2019943 A1 CA 2019943A1
Authority
CA
Canada
Prior art keywords
adjusting apparatus
automatic exposure
exposure
mean value
exposure adjusting
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.)
Granted
Application number
CA2019943A
Other languages
French (fr)
Other versions
CA2019943C (en
Inventor
Toshinobu Haruki
Kenichi Kikuchi
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 JP1166134A external-priority patent/JPH088659B2/en
Priority claimed from JP1236243A external-priority patent/JPH087361B2/en
Priority claimed from JP1236246A external-priority patent/JP2517408B2/en
Priority claimed from JP1236245A external-priority patent/JPH07122727B2/en
Priority claimed from JP1236242A external-priority patent/JPH0399584A/en
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CA2019943A1 publication Critical patent/CA2019943A1/en
Application granted granted Critical
Publication of CA2019943C publication Critical patent/CA2019943C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/71—Circuitry for evaluating the brightness variation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
    • G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
    • G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
    • G05B13/0275—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion using fuzzy logic only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S706/00—Data processing: artificial intelligence
    • Y10S706/90—Fuzzy logic

Abstract

An automatic exposure adjusting apparatus for use in a video camera automatically adjusts exposure based on a video signal obtained from an image sensing circuit. The automatic exposure adjusting apparatus detects a luminance signal level of the video signal and detects a first mean value which is a simple mean value per unit area of an image sensed picture. The automatic exposure adjusting apparatus also outputs a second mean value weighted every area in accordance with a luminance distribution in the image sensed picture. The automatic exposure adjusting apparatus controls the adjustment of exposure based on the first and second mean values. Such weighting of the luminance level in accordance with the luminance distribution is carried out based on the fussy inference.
CA002019943A 1989-06-28 1990-06-27 Automatic exposure adjusting apparatus for automatically adjusting exposure by fuzzy inference Expired - Lifetime CA2019943C (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP1-166134 1989-06-28
JP1166134A JPH088659B2 (en) 1989-06-28 1989-06-28 Automatic exposure adjustment device
JP1-236243 1989-09-12
JP1236243A JPH087361B2 (en) 1989-09-12 1989-09-12 Automatic exposure adjustment device
JP1236246A JP2517408B2 (en) 1989-09-12 1989-09-12 Video camera
JP1-236242 1989-09-12
JP1236245A JPH07122727B2 (en) 1989-09-12 1989-09-12 Automatic exposure adjustment device
JP1-236245 1989-09-12
JP1236242A JPH0399584A (en) 1989-09-12 1989-09-12 Automatic exposure adjustor
JP1-236246 1989-09-12

Publications (2)

Publication Number Publication Date
CA2019943A1 true CA2019943A1 (en) 1990-12-28
CA2019943C CA2019943C (en) 2000-01-11

Family

ID=27528397

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002019943A Expired - Lifetime CA2019943C (en) 1989-06-28 1990-06-27 Automatic exposure adjusting apparatus for automatically adjusting exposure by fuzzy inference

Country Status (7)

Country Link
US (1) US5111301A (en)
EP (1) EP0411318B1 (en)
KR (1) KR0125871B1 (en)
AU (1) AU624519B2 (en)
CA (1) CA2019943C (en)
DE (1) DE69013261T2 (en)
ES (1) ES2065439T3 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084754A (en) * 1989-09-20 1992-01-28 Sony Corporation Method and apparatus for effecting fuzzy control of an imaging device
US5281995A (en) * 1990-07-27 1994-01-25 Fuji Photo Film Co., Ltd. Method of determining an exposure for use in an image forming apparatus
JP2839202B2 (en) * 1990-09-04 1998-12-16 株式会社日立製作所 Automatic exposure control apparatus and method for imaging apparatus
JP2942047B2 (en) * 1991-03-15 1999-08-30 シャープ株式会社 Video camera
US5266984A (en) * 1991-03-22 1993-11-30 Nikon Corporation Exposure calculating apparatus for camera
DE69229577T2 (en) * 1991-04-30 2000-03-30 Canon Kk Photographic camera containing a recording device
US5751844A (en) * 1992-04-20 1998-05-12 International Business Machines Corporation Method and apparatus for image acquisition with adaptive compensation for image exposure variation
JP3339876B2 (en) * 1992-04-28 2002-10-28 株式会社日立製作所 Imaging device
JP3412174B2 (en) * 1992-05-21 2003-06-03 松下電器産業株式会社 Automatic exposure control device
DE69320194T2 (en) * 1993-09-30 1999-05-06 Sgs Thomson Microelectronics Filter architecture, especially for video applications
ATE190416T1 (en) * 1994-10-25 2000-03-15 United Parcel Service Inc AUTOMATIC ELECTRICAL CAMERA FOR LABEL IMAGE RECORDING
US5774630A (en) * 1995-11-21 1998-06-30 Samsung Electronics Co., Ltd. Parameter set up method of membership functions for fuzzy control of washing machine motor
JPH09284784A (en) * 1996-04-12 1997-10-31 Sony Corp Color image pickup device
US6195127B1 (en) * 1996-07-18 2001-02-27 Sanyo Electric Co., Ltd. Digital camera, having a flash unit, which determines proper flash duration through an assessment of image luminance and, where needed, a preliminary flash emission
FI102140B1 (en) * 1996-11-14 1998-10-30 Instrumentarium Corp Optimizing method for adjusting exposure automation in X-ray equipment
JP3892172B2 (en) * 1998-07-24 2007-03-14 松下電器産業株式会社 Solid-state imaging device
US6930710B1 (en) 1998-11-13 2005-08-16 Cnh Canada, Ltd. Method of and apparatus for processing a video image
US7119923B1 (en) * 1999-07-23 2006-10-10 Fuji Photo Film Co., Ltd. Apparatus and method for image processing
US6588879B2 (en) * 2001-12-03 2003-07-08 Supersample Corporation Method for ink jet printing a digital image on a textile, the system and apparatus for practicing the method, and products produced by the system and apparatus using the method
JP4094364B2 (en) * 2002-07-19 2008-06-04 富士フイルム株式会社 Solid-state imaging device and photometric method thereof
JP4053858B2 (en) * 2002-09-30 2008-02-27 富士フイルム株式会社 Signal readout method for solid-state imaging device
KR100557219B1 (en) * 2004-07-06 2006-03-07 삼성전자주식회사 Method and apparatus for compensating for automatic exposure
CN100568926C (en) * 2006-04-30 2009-12-09 华为技术有限公司 The preparation method of automatic exposure control parameter and control method and imaging device
JP4353223B2 (en) * 2006-09-07 2009-10-28 ソニー株式会社 Image data processing apparatus, image data processing method, and imaging system
US8554011B2 (en) * 2011-06-07 2013-10-08 Microsoft Corporation Automatic exposure correction of images
JP6307943B2 (en) * 2014-03-07 2018-04-11 セイコーエプソン株式会社 Printing apparatus, printing apparatus control method, and printing apparatus control program
JP6707208B2 (en) * 2017-10-27 2020-06-10 日立建機株式会社 Loading amount integration device and loading amount integration system
JP2022018428A (en) * 2020-07-15 2022-01-27 株式会社デンソー Exposure control device, exposure control method, and exposure control program

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050085A (en) * 1969-06-04 1977-09-20 Hughes Aircraft Company Automatic light control system
GB2047415B (en) * 1979-02-28 1983-10-12 Nippon Kogaku Kk Photometric multi-metering device
US4306787A (en) * 1979-11-22 1981-12-22 Nippon Kogaku K.K. Exposure control apparatus for camera provided with multi metering device
JPS5741079A (en) * 1980-08-26 1982-03-06 Asahi Optical Co Ltd Automatic television camera exposure device by division of picture
US4443080A (en) * 1980-11-12 1984-04-17 Nippon Kogaku K.K. Exposure control apparatus based on multimetering system
US4429969A (en) * 1981-04-10 1984-02-07 Nippon Kogaku K. K. Exposure control device of camera for flash exposure
JPS5827472A (en) * 1981-08-10 1983-02-18 Sony Corp Controller for solid-state image pickup device
US4546248A (en) * 1983-09-08 1985-10-08 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Wide dynamic range video camera
JPS60167576A (en) * 1984-01-31 1985-08-30 Canon Inc Image pickup device
JPH07118786B2 (en) * 1985-11-08 1995-12-18 松下電器産業株式会社 Imaging device
JPH0771209B2 (en) * 1986-06-13 1995-07-31 三洋電機株式会社 Autofocus circuit
JPS62296673A (en) * 1986-06-16 1987-12-23 Matsushita Electric Works Ltd Television camera with automatic convergence adjusting function
US4843476A (en) * 1986-11-25 1989-06-27 Matsushita Electric Industrial Co., Ltd. System for controlling the amount of light reaching an image pick-up apparatus based on a brightness/darkness ratio weighing
DE3643870C2 (en) * 1986-12-22 1994-11-17 Broadcast Television Syst Method and circuit for automatic exposure control of a television camera
US4843478A (en) * 1987-12-09 1989-06-27 Alden Electronics, Inc. Tunable filter circuit for facsimile recorders
AU607033B2 (en) * 1988-01-12 1991-02-21 Sanyo Electric Co., Ltd. Auto iris/gamma correction apparatus for making automatic exposure adjustment and/or automatic gamma correction in response to video signal and image sensing apparatus comprising such auto iris/gamma correction apparatus
GB2219461B (en) * 1988-05-02 1992-11-18 Canon Kk Exposure control device
AU609610B2 (en) * 1988-05-20 1991-05-02 Sanyo Electric Co., Ltd. Image sensing apparatus having automatic iris function of automatically adjusting exposure in response to video signal
US5029314A (en) * 1989-06-07 1991-07-02 Canon Kabushiki Kaisha Image formation condition controlling apparatus based on fuzzy inference

Also Published As

Publication number Publication date
EP0411318A1 (en) 1991-02-06
AU5798090A (en) 1991-01-10
KR910002234A (en) 1991-01-31
EP0411318B1 (en) 1994-10-12
US5111301A (en) 1992-05-05
ES2065439T3 (en) 1995-02-16
DE69013261D1 (en) 1994-11-17
CA2019943C (en) 2000-01-11
DE69013261T2 (en) 1995-05-18
AU624519B2 (en) 1992-06-11
KR0125871B1 (en) 1997-12-19

Similar Documents

Publication Publication Date Title
CA2019943A1 (en) Automatic exposure adjusting apparatus for automatically adjusting exposure by fuzzy inference
US5677733A (en) Exposure control device having a plurality of light detecting areas
EP0409161A2 (en) Method and apparatus for controlling exposure changes of a video camera
KR0132407B1 (en) Picture quality conrol method & photographying apparatus using the same
AU2835889A (en) Auto iris/gamma correction apparatus for making automatic exposure adjustment and/or automatic gamma correction in response to video signal and image sensing apparatus comprising such auto iris/gamma correction apparatus
US5223935A (en) Electronic camera with automatic exposure control
EP0719039A3 (en) Electronic shutter time control with noise suppression for a video camera
CA2030142A1 (en) White balance adjusting apparatus for automatically adjusting white balance in response to color information signal obtained from image sensing device
CA2030144A1 (en) White balance adjusting apparatus for automatically adjusting white balance in response to luminance information signal and color information signal obtained from image sensing device
JPS6356966B2 (en)
JPH04167771A (en) Automatic exposure control device
JPS5797275A (en) Television camera
CA2043325A1 (en) Contrast correction device
US5083209A (en) Video camera
CA2036100A1 (en) Gradation correcting apparatus
EP0801496B1 (en) Color image pickup apparatus
CA1278262C (en) System and method for adjusting image brightness in electronic printer
EP0812116A3 (en) Color picture quality compensation circuit and related control method thereof
WO1998048599A3 (en) Exposure control on the basis of a relevant part of an x-ray image
EP0620476B1 (en) Photograpic lighting system using incident light meter
US6980251B1 (en) Image sensing apparatus which carries out optimum exposure control of subject
JPH08205021A (en) Image input device
MY108483A (en) Exposure control apparatus of camera.
JP2588696B2 (en) Automatic exposure compensation device
JP2568161B2 (en) Automatic exposure control device

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry