AU771694B2 - Method and apparatus for automatic focusing in an image capture ystem using symmetric FIR filters - Google Patents

Method and apparatus for automatic focusing in an image capture ystem using symmetric FIR filters Download PDF

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Publication number
AU771694B2
AU771694B2 AU65388/00A AU6538800A AU771694B2 AU 771694 B2 AU771694 B2 AU 771694B2 AU 65388/00 A AU65388/00 A AU 65388/00A AU 6538800 A AU6538800 A AU 6538800A AU 771694 B2 AU771694 B2 AU 771694B2
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AU
Australia
Prior art keywords
interest
focal length
image
absolute value
color plane
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.)
Ceased
Application number
AU65388/00A
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English (en)
Other versions
AU6538800A (en
Inventor
Tinku Acharya
Yap-Peng Tan
Brent Thomas
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Intel Corp
Original Assignee
Intel Corp
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 Intel Corp filed Critical Intel Corp
Publication of AU6538800A publication Critical patent/AU6538800A/en
Application granted granted Critical
Publication of AU771694B2 publication Critical patent/AU771694B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04N23/60—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
    • H04N23/67—Focus control based on electronic image sensor signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)
  • Automatic Focus Adjustment (AREA)
  • Image Processing (AREA)
  • Color Television Image Signal Generators (AREA)
  • Color Image Communication Systems (AREA)
  • Focusing (AREA)
AU65388/00A 1999-08-25 2000-08-11 Method and apparatus for automatic focusing in an image capture ystem using symmetric FIR filters Ceased AU771694B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/383,117 US6373481B1 (en) 1999-08-25 1999-08-25 Method and apparatus for automatic focusing in an image capture system using symmetric FIR filters
US09/383117 1999-08-25
PCT/US2000/022128 WO2001015434A1 (en) 1999-08-25 2000-08-11 Method and apparatus for automatic focusing in an image capture ystem using symmetric fir filters

Publications (2)

Publication Number Publication Date
AU6538800A AU6538800A (en) 2001-03-19
AU771694B2 true AU771694B2 (en) 2004-04-01

Family

ID=23511795

Family Applications (1)

Application Number Title Priority Date Filing Date
AU65388/00A Ceased AU771694B2 (en) 1999-08-25 2000-08-11 Method and apparatus for automatic focusing in an image capture ystem using symmetric FIR filters

Country Status (10)

Country Link
US (1) US6373481B1 (enExample)
JP (1) JP2003507769A (enExample)
KR (1) KR100449835B1 (enExample)
AU (1) AU771694B2 (enExample)
DE (1) DE10084921B4 (enExample)
GB (1) GB2370111B (enExample)
IL (2) IL148240A0 (enExample)
RU (1) RU2222113C2 (enExample)
TW (1) TW490976B (enExample)
WO (1) WO2001015434A1 (enExample)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6625308B1 (en) 1999-09-10 2003-09-23 Intel Corporation Fuzzy distinction based thresholding technique for image segmentation
US6658399B1 (en) 1999-09-10 2003-12-02 Intel Corporation Fuzzy based thresholding technique for image segmentation
US7053944B1 (en) 1999-10-01 2006-05-30 Intel Corporation Method of using hue to interpolate color pixel signals
US6628827B1 (en) 1999-12-14 2003-09-30 Intel Corporation Method of upscaling a color image
US7158178B1 (en) 1999-12-14 2007-01-02 Intel Corporation Method of converting a sub-sampled color image
US6933970B2 (en) * 1999-12-20 2005-08-23 Texas Instruments Incorporated Digital still camera system and method
US6748118B1 (en) 2000-02-18 2004-06-08 Intel Corporation Method of quantizing signal samples of an image during same
US6961472B1 (en) 2000-02-18 2005-11-01 Intel Corporation Method of inverse quantized signal samples of an image during image decompression
US7046728B1 (en) 2000-06-30 2006-05-16 Intel Corporation Method of video coding the movement of a human face from a sequence of images
US6775413B1 (en) 2000-09-18 2004-08-10 Intel Corporation Techniques to implement one-dimensional compression
US6563439B1 (en) 2000-10-31 2003-05-13 Intel Corporation Method of performing Huffman decoding
US6636167B1 (en) 2000-10-31 2003-10-21 Intel Corporation Method of generating Huffman code length information
US20020118746A1 (en) * 2001-01-03 2002-08-29 Kim Hyun Mun Method of performing video encoding rate control using motion estimation
US6766286B2 (en) 2001-03-28 2004-07-20 Intel Corporation Pyramid filter
US20020184276A1 (en) * 2001-03-30 2002-12-05 Tinku Acharya Two-dimensional pyramid filter architecture
US6889237B2 (en) * 2001-03-30 2005-05-03 Intel Corporation Two-dimensional pyramid filter architecture
US7538815B1 (en) 2002-01-23 2009-05-26 Marena Systems Corporation Autofocus system and method using focus measure gradient
US7266151B2 (en) * 2002-09-04 2007-09-04 Intel Corporation Method and system for performing motion estimation using logarithmic search
US20040042551A1 (en) * 2002-09-04 2004-03-04 Tinku Acharya Motion estimation
US20040057626A1 (en) * 2002-09-23 2004-03-25 Tinku Acharya Motion estimation using a context adaptive search
US7274393B2 (en) * 2003-02-28 2007-09-25 Intel Corporation Four-color mosaic pattern for depth and image capture
US20040174446A1 (en) * 2003-02-28 2004-09-09 Tinku Acharya Four-color mosaic pattern for depth and image capture
US20040169748A1 (en) * 2003-02-28 2004-09-02 Tinku Acharya Sub-sampled infrared sensor for use in a digital image capture device
KR100827240B1 (ko) * 2006-10-02 2008-05-07 삼성전자주식회사 다채널 보간 장치 및 방법
JP2010015024A (ja) * 2008-07-04 2010-01-21 Canon Inc 撮像装置、その制御方法、プログラム及び記憶媒体
KR101531709B1 (ko) * 2008-10-17 2015-07-06 삼성전자 주식회사 고감도 컬러 영상을 제공하기 위한 영상 처리 장치 및 방법
US8624998B2 (en) * 2009-06-05 2014-01-07 Apple Inc. Camera image selection based on detected device movement
US8289400B2 (en) 2009-06-05 2012-10-16 Apple Inc. Image capturing device having continuous image capture
US8134115B2 (en) * 2009-06-23 2012-03-13 Nokia Corporation Color filters for sub-diffraction limit-sized light sensors
US9354489B2 (en) * 2014-02-10 2016-05-31 Raytheon Company Robust autofocus algorithm for multi-spectral imaging systems
KR101912322B1 (ko) 2017-08-08 2018-10-26 인천대학교 산학협력단 스파우트 스트랩

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436511A2 (en) * 1990-01-05 1991-07-10 Canon Kabushiki Kaisha In-focus detecting device
EP0833501A2 (en) * 1996-09-30 1998-04-01 Samsung Electronics Co., Ltd. Image quality enhancement circuit and method therefor
US5808697A (en) * 1995-06-16 1998-09-15 Mitsubishi Denki Kabushiki Kaisha Video contrast enhancer

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1587662A1 (ru) * 1988-01-12 1990-08-23 Предприятие П/Я А-1335 Способ формировани сигнала фокусировки телевизионной камеры и устройство дл его осуществлени
JPH06138362A (ja) * 1991-02-06 1994-05-20 Sony Corp オートフォーカス装置
EP0500327B1 (en) 1991-02-20 1998-09-30 Canon Kabushiki Kaisha Image processing apparatus
JPH04373370A (ja) * 1991-06-24 1992-12-25 Sanyo Electric Co Ltd オートフォーカスビデオカメラ
JPH06141225A (ja) * 1992-10-27 1994-05-20 Canon Inc 固体撮像装置
JP3542377B2 (ja) 1993-06-04 2004-07-14 キヤノン株式会社 画像形成装置及びその方法
US5835143A (en) * 1993-09-02 1998-11-10 Asahi Kogaku Kogyo Kabushiki Kaisha Automatic focusing system for a still video camera
US5666569A (en) * 1994-08-25 1997-09-09 Flashpoint Technology, Inc. System and method for detecting and indicating proper focal distance in a fixed lens camera
JP3563508B2 (ja) * 1995-10-19 2004-09-08 富士写真フイルム株式会社 自動焦点調節装置
JPH09211308A (ja) * 1996-02-06 1997-08-15 Eastman Kodak Japan Kk 自動焦点撮像装置の被写体検出機構
US6151415A (en) * 1998-12-14 2000-11-21 Intel Corporation Auto-focusing algorithm using discrete wavelet transform

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436511A2 (en) * 1990-01-05 1991-07-10 Canon Kabushiki Kaisha In-focus detecting device
US5808697A (en) * 1995-06-16 1998-09-15 Mitsubishi Denki Kabushiki Kaisha Video contrast enhancer
EP0833501A2 (en) * 1996-09-30 1998-04-01 Samsung Electronics Co., Ltd. Image quality enhancement circuit and method therefor

Also Published As

Publication number Publication date
KR100449835B1 (ko) 2004-09-22
GB2370111B (en) 2003-12-31
GB0203899D0 (en) 2002-04-03
DE10084921T1 (de) 2002-08-29
RU2002107312A (ru) 2004-02-10
AU6538800A (en) 2001-03-19
KR20020033461A (ko) 2002-05-06
US6373481B1 (en) 2002-04-16
RU2222113C2 (ru) 2004-01-20
GB2370111A (en) 2002-06-19
TW490976B (en) 2002-06-11
IL148240A0 (en) 2002-09-12
JP2003507769A (ja) 2003-02-25
IL148240A (en) 2007-08-19
WO2001015434A1 (en) 2001-03-01
DE10084921B4 (de) 2008-03-20

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