JP5054184B2 - オートフォーカスカメラモジュールでのレンズシェーディング補償方法 - Google Patents
オートフォーカスカメラモジュールでのレンズシェーディング補償方法 Download PDFInfo
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- JP5054184B2 JP5054184B2 JP2010278351A JP2010278351A JP5054184B2 JP 5054184 B2 JP5054184 B2 JP 5054184B2 JP 2010278351 A JP2010278351 A JP 2010278351A JP 2010278351 A JP2010278351 A JP 2010278351A JP 5054184 B2 JP5054184 B2 JP 5054184B2
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- 238000000034 method Methods 0.000 title claims description 18
- 230000003287 optical effect Effects 0.000 claims description 45
- 238000012545 processing Methods 0.000 claims description 9
- 230000006870 function Effects 0.000 description 13
- 238000012937 correction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000003705 background correction Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/61—Noise processing, e.g. detecting, correcting, reducing or removing noise the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4"
-
- 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
- H04N23/63—Control of cameras or camera modules by using electronic viewfinders
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Studio Devices (AREA)
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Color Television Image Signal Generators (AREA)
Description
Claims (4)
- オートフォーカス機能を用いて多数のレンズを含むレンズ部から光イメージを受け、該光イメージをイメージセンサーで電気的信号である映像データに変換し、該映像データをイメージ信号処理部でレンズシェーディング補償する方法であって、
各ピクセルが均一な明るさ値を有する標準映像入力に対してあらかじめ設定された遠距離フォーカシング及び近距離フォーカシングにおけるレンズ位置にしたがって光軸座標及び中心対比周辺のゲインを獲得する段階と、
前記オートフォーカス機能を用いて映像データを獲得する段階と、
前記映像データの獲得時に用いられたレンズ位置に応じたシフト分を修正された光軸座標、及び前記レンズ位置に応じた変化分を修正された中心対比周辺のゲインを獲得する段階と、
前記修正された光軸座標及び中心対比周辺のゲインを用いて前記映像データをレンズシェーディング補償する段階と、
を含むレンズシェーディング補償方法。 - 前記修正された光軸座標のうちx座標は、
ここで、dはレンズ位置、minは遠距離フォーカシングレンズ位置、maxは近距離フォーカシングレンズ位置、CXminは遠距離フォーカシング光軸x座標、CXmaxは近距離フォーカシング光軸x座標、centerX(d)は修正された光軸座標のうちx座標である、請求項1に記載のレンズシェーディング補償方法。 - 前記修正された光軸座標のうちy座標は、
ここで、dはレンズ位置、minは遠距離フォーカシングレンズ位置、maxは近距離フォーカシングレンズ位置、CYminは遠距離フォーカシング光軸y座標、CYmaxは近距離フォーカシング光軸y座標、及びcenterY(d)は修正された光軸座標のうちy座標である、請求項1に記載のレンズシェーディング補償方法。 - 前記修正された中心対比周辺のゲインは、
ここで、dはレンズ位置、minは遠距離フォーカシングレンズ位置、maxは近距離フォーカシングレンズ位置、Gminは遠距離フォーカシングの中心対比周辺のゲイン、Gmaxは近距離フォーカシングの中心対比周辺のゲイン、Gain(d)は修正された中心対比周辺のゲインである、請求項1に記載のレンズシェーディング補償方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2009-0124185 | 2009-12-14 | ||
KR1020090124185A KR101672944B1 (ko) | 2009-12-14 | 2009-12-14 | 오토 포커스 카메라 모듈에서의 렌즈 셰이딩 보상방법 |
Publications (2)
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JP2011125026A JP2011125026A (ja) | 2011-06-23 |
JP5054184B2 true JP5054184B2 (ja) | 2012-10-24 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP2010278351A Active JP5054184B2 (ja) | 2009-12-14 | 2010-12-14 | オートフォーカスカメラモジュールでのレンズシェーディング補償方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8957998B2 (ja) |
JP (1) | JP5054184B2 (ja) |
KR (1) | KR101672944B1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102210137A (zh) * | 2008-11-12 | 2011-10-05 | 柯尼卡美能达精密光学株式会社 | 摄像装置的调整方法及摄像装置 |
KR20110135720A (ko) * | 2010-06-11 | 2011-12-19 | 삼성전자주식회사 | 촬영 환경에 따른 렌즈 쉐이딩 보상 테이블을 생성하기 위한 장치 및 방법 |
US9066021B2 (en) | 2012-10-18 | 2015-06-23 | Ortho-Clinical Diagnostics, Inc. | Full resolution color imaging of an object |
US9361537B2 (en) * | 2013-11-27 | 2016-06-07 | Intel Corporation | Techniques to reduce color artifacts in a digital image |
US9367916B1 (en) * | 2014-12-10 | 2016-06-14 | Intel Corporation | Method and system of run-time self-calibrating lens shading correction |
CN107592516B (zh) * | 2017-09-14 | 2020-01-17 | 长沙全度影像科技有限公司 | 一种用于全景相机的颜色阴影校正方法及系统 |
US11277544B2 (en) * | 2019-08-07 | 2022-03-15 | Microsoft Technology Licensing, Llc | Camera-specific distortion correction |
US11663704B2 (en) | 2021-04-28 | 2023-05-30 | Microsoft Technology Licensing, Llc | Distortion correction via modified analytical projection |
Family Cites Families (14)
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JP4212741B2 (ja) * | 1999-12-09 | 2009-01-21 | 株式会社リコー | 画像処理装置 |
JP2004040298A (ja) * | 2002-07-01 | 2004-02-05 | Minolta Co Ltd | 撮像装置および撮影レンズ |
US7408576B2 (en) * | 2002-08-16 | 2008-08-05 | Zoran Corporation | Techniques for modifying image field data as a function of radius across the image field |
US7391450B2 (en) * | 2002-08-16 | 2008-06-24 | Zoran Corporation | Techniques for modifying image field data |
JP3824237B2 (ja) * | 2003-09-05 | 2006-09-20 | ソニー株式会社 | 画像処理装置および方法、記録媒体、並びにプログラム |
JP4704913B2 (ja) * | 2003-10-31 | 2011-06-22 | 三菱電機株式会社 | 画像補正方法および撮像装置 |
JP4594004B2 (ja) * | 2004-08-26 | 2010-12-08 | キヤノン株式会社 | 撮像装置、その制御方法、並びにプログラム及び記憶媒体 |
US20060092291A1 (en) * | 2004-10-28 | 2006-05-04 | Bodie Jeffrey C | Digital imaging system |
JP4014612B2 (ja) * | 2005-11-09 | 2007-11-28 | シャープ株式会社 | 周辺光量補正装置、周辺光量補正方法、電子情報機器、制御プログラムおよび可読記録媒体 |
KR100808493B1 (ko) * | 2005-12-28 | 2008-03-03 | 엠텍비젼 주식회사 | 렌즈 셰이딩 보상 장치, 보상 방법 및 이를 이용한 이미지프로세서 |
JP2008035282A (ja) * | 2006-07-28 | 2008-02-14 | Kyocera Corp | 撮像装置と該撮像装置を備えた携帯機器 |
JP4845817B2 (ja) * | 2007-06-14 | 2011-12-28 | 富士フイルム株式会社 | 撮像装置,レンズユニット,撮像方法及び制御プログラム |
JP2009194470A (ja) * | 2008-02-12 | 2009-08-27 | Panasonic Corp | デジタルカメラ装置、シェーディング補正装置および方法 |
KR101589310B1 (ko) * | 2009-07-08 | 2016-01-28 | 삼성전자주식회사 | 렌즈 쉐이딩 보정 방법 및 장치 |
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- 2009-12-14 KR KR1020090124185A patent/KR101672944B1/ko active IP Right Grant
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- 2010-12-14 US US12/967,766 patent/US8957998B2/en active Active
- 2010-12-14 JP JP2010278351A patent/JP5054184B2/ja active Active
Also Published As
Publication number | Publication date |
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US20110141323A1 (en) | 2011-06-16 |
US8957998B2 (en) | 2015-02-17 |
JP2011125026A (ja) | 2011-06-23 |
KR20110067550A (ko) | 2011-06-22 |
KR101672944B1 (ko) | 2016-11-04 |
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