CA2030142A1 - Dispositif d'equilibrage automatique du blanc repondant au signal de chrominance d'un capteur d'images - Google Patents

Dispositif d'equilibrage automatique du blanc repondant au signal de chrominance d'un capteur d'images

Info

Publication number
CA2030142A1
CA2030142A1 CA2030142A CA2030142A CA2030142A1 CA 2030142 A1 CA2030142 A1 CA 2030142A1 CA 2030142 A CA2030142 A CA 2030142A CA 2030142 A CA2030142 A CA 2030142A CA 2030142 A1 CA2030142 A1 CA 2030142A1
Authority
CA
Canada
Prior art keywords
white balance
image sensing
evaluating values
response
sensing device
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
CA2030142A
Other languages
English (en)
Other versions
CA2030142C (fr
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 JP1337352A external-priority patent/JP2532956B2/ja
Priority claimed from JP2047915A external-priority patent/JP2523036B2/ja
Priority claimed from JP2058652A external-priority patent/JP2532962B2/ja
Priority claimed from JP2080102A external-priority patent/JPH0828878B2/ja
Priority claimed from JP2090902A external-priority patent/JPH0828879B2/ja
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Publication of CA2030142A1 publication Critical patent/CA2030142A1/fr
Application granted granted Critical
Publication of CA2030142C publication Critical patent/CA2030142C/fr
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
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/84—Camera processing pipelines; Components thereof for processing colour signals
    • H04N23/88—Camera processing pipelines; Components thereof for processing colour signals for colour balance, e.g. white-balance circuits or colour temperature control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Television Image Signal Generators (AREA)
CA002030142A 1989-11-17 1990-11-16 Dispositif d'equilibrage automatique du blanc repondant au signal de chrominance d'un capteur d'images Expired - Lifetime CA2030142C (fr)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP30023989 1989-11-17
JP1-300239 1989-11-17
JP1-337352 1989-12-26
JP1337352A JP2532956B2 (ja) 1989-12-26 1989-12-26 カラ―ビデオカメラ
JP2047915A JP2523036B2 (ja) 1990-02-28 1990-02-28 カラ―ビデオカメラ
JP2-47915 1990-02-28
JP2-58652 1990-03-09
JP2058652A JP2532962B2 (ja) 1990-03-09 1990-03-09 カラ―ビデオカメラ
JP2-80102 1990-03-28
JP2080102A JPH0828878B2 (ja) 1989-11-17 1990-03-28 白バランス調整装置
JP2-90902 1990-04-05
JP2090902A JPH0828879B2 (ja) 1990-04-05 1990-04-05 白バランス調整装置

Publications (2)

Publication Number Publication Date
CA2030142A1 true CA2030142A1 (fr) 1991-05-18
CA2030142C CA2030142C (fr) 1999-02-23

Family

ID=27550294

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002030142A Expired - Lifetime CA2030142C (fr) 1989-11-17 1990-11-16 Dispositif d'equilibrage automatique du blanc repondant au signal de chrominance d'un capteur d'images

Country Status (6)

Country Link
US (3) US5442408A (fr)
EP (3) EP0708569B1 (fr)
KR (1) KR100196305B1 (fr)
CA (1) CA2030142C (fr)
DE (3) DE69033744T2 (fr)
ES (1) ES2091784T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519761A3 (en) * 1991-06-20 1993-03-03 Matsushita Electric Industrial Co., Ltd Devices for judging quality of an image

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US20060092171A1 (en) * 2004-11-01 2006-05-04 Xuemei Zhang Method and system for image white point estimation
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US20070031060A1 (en) * 2005-08-04 2007-02-08 Canon Kabushiki Kaisha Image processing apparatus, method for calculating white balance evaluation value, program including program code for realizing the method for calculating white balance evaluation value, and storage medium for storing the program
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JP5821214B2 (ja) * 2011-02-28 2015-11-24 ソニー株式会社 画像処理装置と画像処理方法およびプログラム
TWI465115B (zh) * 2011-08-23 2014-12-11 Novatek Microelectronics Corp 顯示影像的白平衡方法
TWI545964B (zh) * 2012-09-14 2016-08-11 鴻海精密工業股份有限公司 影像白平衡方法及攝像裝置
CN109040613B (zh) * 2017-06-09 2022-03-25 株式会社爱信 图像处理装置
CN107872663B (zh) * 2017-12-25 2019-05-24 Oppo广东移动通信有限公司 图像处理方法及装置、计算机可读存储介质和计算机设备
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519761A3 (en) * 1991-06-20 1993-03-03 Matsushita Electric Industrial Co., Ltd Devices for judging quality of an image
US5448502A (en) * 1991-06-20 1995-09-05 Matsushita Electric Industrial Co., Ltd. Devices for judging image on the basis of gray world assumption, discriminating color chart, deducing light source and regulating color

Also Published As

Publication number Publication date
CA2030142C (fr) 1999-02-23
EP0711082A3 (fr) 1998-07-08
DE69033744D1 (de) 2001-07-05
US5555022A (en) 1996-09-10
EP0708569A3 (fr) 1998-07-08
EP0711082A2 (fr) 1996-05-08
DE69033744T2 (de) 2002-02-28
DE69033743D1 (de) 2001-07-05
EP0711082B1 (fr) 2001-05-30
KR100196305B1 (ko) 1999-06-15
EP0433672B1 (fr) 1996-07-10
US5442408A (en) 1995-08-15
DE69027751T2 (de) 1997-03-06
EP0433672A2 (fr) 1991-06-26
ES2091784T3 (es) 1996-11-16
EP0708569A2 (fr) 1996-04-24
EP0433672A3 (en) 1992-07-08
KR910011059A (ko) 1991-06-29
EP0708569B1 (fr) 2001-05-30
US5489939A (en) 1996-02-06
DE69027751D1 (de) 1996-08-14
DE69033743T2 (de) 2002-02-07

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Effective date: 20121202