JP4657287B2 - 調節されたダークフロアの補正による画像形成システム - Google Patents
調節されたダークフロアの補正による画像形成システム Download PDFInfo
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- JP4657287B2 JP4657287B2 JP2007502887A JP2007502887A JP4657287B2 JP 4657287 B2 JP4657287 B2 JP 4657287B2 JP 2007502887 A JP2007502887 A JP 2007502887A JP 2007502887 A JP2007502887 A JP 2007502887A JP 4657287 B2 JP4657287 B2 JP 4657287B2
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- 238000012937 correction Methods 0.000 title description 18
- 238000000034 method Methods 0.000 claims description 43
- 230000008569 process Effects 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 238000012935 Averaging Methods 0.000 claims 1
- 230000002123 temporal effect Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 description 37
- 230000002950 deficient Effects 0.000 description 18
- 238000003672 processing method Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000003384 imaging method Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003574 free electron Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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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
- H04N25/67—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response
- H04N25/671—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to fixed-pattern noise, e.g. non-uniformity of response for non-uniformity detection or correction
-
- 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
- H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current
-
- 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
- H04N25/68—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to defects
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Input (AREA)
- Image Processing (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Description
2:レンズ
3:シャッターメカニズム
4:アナログ−デジタルコンバータ
5:行のイメージメモリ
6:プロセッサ
7:コンテンポラリダークフレームメモリ
8:処理されたイメージストレージ
9:ベースラインダークフロアメモリ
10:調整されたダークフロアメモリ
11:ベースラインの欠陥マップメモリ
12:調整された欠陥マップメモリ
20:ダークフレーム捕捉手順ブロック
21:ダークフレーム記憶手順ブロック
22:画像捕捉手順ブロック
23:画像処理手順ブロック
24:ベースラインダークフロア調整手順ブロック
25:ダークフレーム計算及び記憶手順ブロック
27:ダークフレーム計算及び記憶並びに調整された欠陥マップ計算手順ブロック
Claims (3)
- 画像の捕捉でそれぞれ使用される画素のアレイを有するイメージセンサを較正する方法であって、
(a)前記アレイにおける実質的に全ての画素から第一の時間でダークフレームの系列を捕捉し、前記ダークフレームの系列を平均して、第一のダークフロアの値を有するベースラインダークフロアを生成するステップと、
(b)前記第一のダークフロアの値を記憶するステップと、
(c)前記アレイにおける実質的に全ての画素から第二の時間でコンテンポラリのダークフロアの値を捕捉するステップと、前記第二の時間は、前記第一の時間に続く時間であり、
(d)前記第一のダークフロアの値と前記コンテンポラリのダークフロアの値を使用して、第三のダークフロアの値を計算するステップとを含み、前記第三のダークフロアの値は、1以上の捕捉された画像を処理するときに使用され、
(e)前記ステップ(c)及び(d)を繰り返すステップと、同じ前記第一のダークフロアの値が使用されて前記第三のダークフロアの値が計算される、
ことを特徴とする方法。 - 前記ステップ(c)は、実際に捕捉された画像に実質的に近い時間的な近さで前記第二のダークフロアを捕捉するステップを含む、
請求項1記載の方法。 - (a)実際の画像を捕捉することにそれぞれ使用される画素のアレイを有するイメージセンサと、
(b)前記アレイにおける実質的に全ての画素から第一の時間で捕捉された第一のダークフロアの値を有するベースラインダークフロアを含むメモリと、前記ベースラインダークフロアは、捕捉されたダークフレームの系列の平均を含み、
(c)第三のダークフロアの値の系列を計算する計算ユニットとを有し、それぞれの計算について、前記第一のダークフロア値と新たに捕捉されたコンテンポラリのダークフロア値を使用して前記第三のダークフロア値が計算され、特定の前記第三のダークフロア値は、1以上の捕捉された画像を処理するために使用される、
ことを特徴とするカメラ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/795,465 US7330208B2 (en) | 2004-03-08 | 2004-03-08 | Electronic imaging system with adjusted dark floor correction |
PCT/US2005/007290 WO2005088959A1 (en) | 2004-03-08 | 2005-03-07 | Imaging system with adjusted dark floor correction |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2007528184A JP2007528184A (ja) | 2007-10-04 |
JP2007528184A5 JP2007528184A5 (ja) | 2008-04-24 |
JP4657287B2 true JP4657287B2 (ja) | 2011-03-23 |
Family
ID=34912461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007502887A Active JP4657287B2 (ja) | 2004-03-08 | 2005-03-07 | 調節されたダークフロアの補正による画像形成システム |
Country Status (5)
Country | Link |
---|---|
US (2) | US7330208B2 (ja) |
EP (1) | EP1723781B1 (ja) |
JP (1) | JP4657287B2 (ja) |
DE (1) | DE602005020748D1 (ja) |
WO (1) | WO2005088959A1 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7330208B2 (en) * | 2004-03-08 | 2008-02-12 | Eastman Kodak Company | Electronic imaging system with adjusted dark floor correction |
US20050212936A1 (en) * | 2004-03-25 | 2005-09-29 | Eastman Kodak Company | Extended dynamic range image sensor with fixed pattern noise reduction |
US7812867B2 (en) * | 2004-10-29 | 2010-10-12 | Canon Kabushiki Kaisha | Image processing apparatus adapted to correct image signal |
US8081837B2 (en) * | 2006-02-07 | 2011-12-20 | Intel Corporation | Image sensor array leakage and dark current compensation |
US20090153913A1 (en) * | 2007-12-18 | 2009-06-18 | Butler Jr William Joseph | Method For Providing Enhancement With An Imaging Apparatus |
US8180167B2 (en) * | 2008-07-16 | 2012-05-15 | Seiko Epson Corporation | Model-based error resilience in data communication |
US7832928B2 (en) * | 2008-07-24 | 2010-11-16 | Carestream Health, Inc. | Dark correction for digital X-ray detector |
JP5124416B2 (ja) * | 2008-10-14 | 2013-01-23 | Hoya株式会社 | 固定パターンノイズ除去ユニット、撮像ユニット、および電子内視鏡システム |
US8319861B2 (en) * | 2010-06-04 | 2012-11-27 | Apple Inc. | Compensation for black level changes |
SG10201703538UA (en) * | 2012-10-17 | 2017-06-29 | Bio Rad Laboratories Inc | Image capture for large analyte arrays |
US9007490B1 (en) * | 2013-03-14 | 2015-04-14 | Amazon Technologies, Inc. | Approaches for creating high quality images |
US10458938B2 (en) * | 2013-03-14 | 2019-10-29 | Ecolab Usa Inc. | System and method for monitoring of floor conditions |
US9307148B1 (en) | 2013-05-15 | 2016-04-05 | Amazon Technologies, Inc. | Video enhancement techniques |
US9269012B2 (en) | 2013-08-22 | 2016-02-23 | Amazon Technologies, Inc. | Multi-tracker object tracking |
JP6525756B2 (ja) * | 2015-06-15 | 2019-06-05 | キヤノン株式会社 | 放射線撮像装置及びその制御方法 |
JP6917752B2 (ja) * | 2017-04-03 | 2021-08-11 | キヤノン株式会社 | 放射線撮影装置およびその制御方法、プログラム |
US10397551B2 (en) * | 2017-07-26 | 2019-08-27 | Symbol Technologies, Llc | Temperature compensation for image acquisition and processing apparatus and methods |
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JPH0918793A (ja) * | 1995-06-26 | 1997-01-17 | Nikon Corp | 撮像装置 |
JP2001008106A (ja) * | 1999-06-18 | 2001-01-12 | Canon Inc | 画像処理装置、画像処理システム、画像処理方法、及び記憶媒体 |
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JPH04219063A (ja) | 1990-05-15 | 1992-08-10 | Ricoh Co Ltd | 画像読取装置 |
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US7330208B2 (en) * | 2004-03-08 | 2008-02-12 | Eastman Kodak Company | Electronic imaging system with adjusted dark floor correction |
-
2004
- 2004-03-08 US US10/795,465 patent/US7330208B2/en active Active
-
2005
- 2005-03-07 EP EP05724769A patent/EP1723781B1/en active Active
- 2005-03-07 DE DE602005020748T patent/DE602005020748D1/de active Active
- 2005-03-07 JP JP2007502887A patent/JP4657287B2/ja active Active
- 2005-03-07 WO PCT/US2005/007290 patent/WO2005088959A1/en not_active Application Discontinuation
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- 2007-12-20 US US11/961,223 patent/US7907192B2/en active Active
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JPH0918793A (ja) * | 1995-06-26 | 1997-01-17 | Nikon Corp | 撮像装置 |
JP2001008106A (ja) * | 1999-06-18 | 2001-01-12 | Canon Inc | 画像処理装置、画像処理システム、画像処理方法、及び記憶媒体 |
JP2003298952A (ja) * | 2002-03-29 | 2003-10-17 | Fuji Photo Film Co Ltd | Ccd撮像装置 |
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Also Published As
Publication number | Publication date |
---|---|
JP2007528184A (ja) | 2007-10-04 |
WO2005088959A1 (en) | 2005-09-22 |
US20080094490A1 (en) | 2008-04-24 |
US20050195296A1 (en) | 2005-09-08 |
EP1723781B1 (en) | 2010-04-21 |
US7330208B2 (en) | 2008-02-12 |
US7907192B2 (en) | 2011-03-15 |
DE602005020748D1 (de) | 2010-06-02 |
EP1723781A1 (en) | 2006-11-22 |
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