JP4910001B2 - 画像処理用の二光源二色性反射モデル - Google Patents
画像処理用の二光源二色性反射モデル Download PDFInfo
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- JP4910001B2 JP4910001B2 JP2008552455A JP2008552455A JP4910001B2 JP 4910001 B2 JP4910001 B2 JP 4910001B2 JP 2008552455 A JP2008552455 A JP 2008552455A JP 2008552455 A JP2008552455 A JP 2008552455A JP 4910001 B2 JP4910001 B2 JP 4910001B2
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- 238000012545 processing Methods 0.000 title claims description 22
- 230000003595 spectral effect Effects 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 24
- 230000009977 dual effect Effects 0.000 claims description 4
- 238000005286 illumination Methods 0.000 description 28
- 238000012937 correction Methods 0.000 description 14
- 239000003086 colorant Substances 0.000 description 12
- 239000013598 vector Substances 0.000 description 10
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- 238000013459 approach Methods 0.000 description 4
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- 230000003993 interaction Effects 0.000 description 4
- 239000003607 modifier Substances 0.000 description 4
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- 230000000694 effects Effects 0.000 description 3
- 238000005282 brightening Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003708 edge detection Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/90—Determination of colour characteristics
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T15/00—3D [Three Dimensional] image rendering
- G06T15/50—Lighting effects
- G06T15/506—Illumination models
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- G06T5/90—
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- G06T5/94—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/46—Colour picture communication systems
- H04N1/56—Processing of colour picture signals
- H04N1/60—Colour correction or control
- H04N1/62—Retouching, i.e. modification of isolated colours only or in isolated picture areas only
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20004—Adaptive image processing
- G06T2207/20012—Locally adaptive
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20092—Interactive image processing based on input by user
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
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- G06T2207/00—Indexing scheme for image analysis or image enhancement
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- G06T2207/20092—Interactive image processing based on input by user
- G06T2207/20104—Interactive definition of region of interest [ROI]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/20—Special algorithmic details
- G06T2207/20172—Image enhancement details
- G06T2207/20192—Edge enhancement; Edge preservation
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Computer Graphics (AREA)
- Signal Processing (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Image Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Processing Or Creating Images (AREA)
- Facsimile Image Signal Circuits (AREA)
- Picture Signal Circuits (AREA)
Description
I(x,y,z,θ,φ,λ)=[mb(θi)cb(λ)+ms(θi,φi,θe,φe)cs(λ)]ld(λ)+Ma(λ)cb(λ)+Mas(θe,φe,λ)cs(λ)
式中、I(x,y,z,θ,φ,λ)は、波長λでの方向θ、φにおける(x,y,z)での表面点の放射輝度であり、
mb(θi)は、幾何学的係数に基づくスペクトルから独立した内部反射率であり、
cb(λ)は、波長λでの表面の幾何学的形状から独立した内部反射率であり、
ms(θi,φi,θe,φe)は、幾何学的係数に基づく、スペクトルから独立した表面反射率であり、
cs(λ)は、波長λでの表面の幾何学的形状から独立した表面反射率であり、
ld(λ)は、波長λでの入射光源であり、
θiは、表面法線に対する表面上への光源の入射傾斜角度であり、
φiは、入射パン角度、すなわち、入射光源と表面の接平面上の固定軸との角度であり、
θeは、出射傾斜角度、すなわち、表面法線に対する出射光線の角度であり、
φeは、出射パン角度、すなわち、出射光線と表面の接平面上の固定軸との角度であり、
上記項はすべて、二色反射モデルを構成する。BIDRモデルの残りの項は、周辺光源に関連する。
Ma(λ)は、入射光源を除く、周辺光源と半球上の幾何学的内部反射率との積分であり、
Mas(θe,φe,λ)は、入射光源を除く、周辺光源と半球上の幾何学的表面反射率との積分である。
∫mb(θi)la(θi,φi,λ)dθidφi
この関数は、入射光源を除く、周辺光源と半球上の幾何学的表面反射との積分を表す。
I(x,y,z,θ,φ,λ)=[mb(θi)cb(λ)+ms(θi,φi,θe,φe)cs(λ)]ld(λ)+Ma(λ)cb(λ)
I(x,y,z,θ,φ,λ)=[mb(θi)cb(λ)+ms(θi,φi,θe,φe)cs(λ)]ld(λ)sx,y,z+Ma(λ)cb(λ)
Claims (4)
- 画像を処理する自動化されコンピュータ化された方法であって、
画像を示している画像ファイルを準備するステップと、
前記画像に示されたマテリアルの正確な色の二光源二色性反射モデル表現、ここで、当該二光源二色性反射モデルは、前記画像内の複数のマテリアルにわたり、完全に影になった色値から完全に照らされた色値までの範囲内に前記画像の正確な色値を表現する、二光源二色性反射モデル表現を、前記画像の複数のマテリアルにわたって不変である固有のスペクトル比を計算することにより導出するステップと、
前記二光源二色性反射モデルを利用して、前記画像に示されたマテリアルの正確な色を有する画像を結果として生じるように前記画像ファイルの画像を処理するステップであって、前記正確な色は、二光源二色性反射モデルの固有のスペクトル比によって表現された正確な色値に応じて、完全に影になった色値から完全に照らされた色値までの範囲内において選択したいかなる調整の程度にも設定され且つ決定される、ステップと
を含む、方法。 - 前記固有のスペクトル比は暗/(明−暗)に等しい、請求項1に記載の方法。
- 前記スペクトル比を正規化するさらなるステップを含む、請求項2に記載の方法。
- 前記画像ファイルの画像を処理して強度調整画像を提供するステップであって、
前記強度調整画像に対する強度調整が、完全に照らされた色値の範囲を超える強度を生じる場合には、二光源二色性反射モデルにしたがって決定された完全に照らされた色値に応じて強度を調整する、ステップをさらに含む、請求項1に記載の方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/341,751 | 2006-01-27 | ||
US11/341,751 US8976173B2 (en) | 2006-01-27 | 2006-01-27 | Bi-illuminant dichromatic reflection model for image manipulation |
US11/403,764 US8976174B2 (en) | 2006-01-27 | 2006-04-13 | Bi-illuminant dichromatic reflection model for image manipulation |
US11/403,764 | 2006-04-13 | ||
PCT/US2007/002238 WO2007089624A2 (en) | 2006-01-27 | 2007-01-25 | Bi-illuminant dichromatic reflection model for image manipulation |
Publications (2)
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JP2009524885A JP2009524885A (ja) | 2009-07-02 |
JP4910001B2 true JP4910001B2 (ja) | 2012-04-04 |
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JP2008552455A Active JP4910001B2 (ja) | 2006-01-27 | 2007-01-25 | 画像処理用の二光源二色性反射モデル |
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US (1) | US8976174B2 (ja) |
EP (1) | EP1977414B1 (ja) |
JP (1) | JP4910001B2 (ja) |
WO (1) | WO2007089624A2 (ja) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4942659B2 (ja) * | 2005-08-29 | 2012-05-30 | 京セラ株式会社 | 積層型圧電素子及びこれを用いた噴射装置 |
US7995058B2 (en) * | 2006-01-27 | 2011-08-09 | Tandent Vision Science, Inc. | Method and system for identifying illumination fields in an image |
US7894662B2 (en) * | 2006-10-11 | 2011-02-22 | Tandent Vision Science, Inc. | Method for using image depth information in identifying illumination fields |
US7760912B2 (en) | 2007-08-01 | 2010-07-20 | Tandent Vision Science, Inc. | Image segregation system with method for handling textures |
US20100142846A1 (en) * | 2008-12-05 | 2010-06-10 | Tandent Vision Science, Inc. | Solver for image segregation |
US8260050B2 (en) | 2008-12-05 | 2012-09-04 | Tandent Vision Science, Inc. | Test bed for optimizing an image segregation |
US8139867B2 (en) | 2008-12-05 | 2012-03-20 | Tandent Vision Science, Inc. | Image segregation system architecture |
US8139850B2 (en) | 2008-12-05 | 2012-03-20 | Tandent Vision Science, Inc. | Constraint generation for use in image segregation |
CN101661720B (zh) * | 2009-04-09 | 2012-02-01 | 深圳华映显示科技有限公司 | 一种用于液晶显示器的色彩校正方法及装置 |
US8478029B2 (en) * | 2009-05-26 | 2013-07-02 | Tandent Vision Science, Inc. | Multi-resolution analysis in image segregation |
US8194975B2 (en) * | 2009-06-29 | 2012-06-05 | Tandent Vision Science, Inc. | Use of an intrinsic image in face recognition |
EP2473834B1 (en) | 2009-09-03 | 2021-09-08 | National ICT Australia Limited | Illumination spectrum recovery |
US9563815B2 (en) * | 2009-09-15 | 2017-02-07 | Tandent Vision Science, Inc. | Method and system for processing an image received from a remote source |
US8311338B2 (en) * | 2009-09-15 | 2012-11-13 | Tandent Vision Science, Inc. | Method and system for learning a same-material constraint in an image |
US8452109B2 (en) * | 2010-01-11 | 2013-05-28 | Tandent Vision Science, Inc. | Image segregation system with method for handling textures |
US8577150B2 (en) * | 2011-03-18 | 2013-11-05 | Tandent Vision Science, Inc. | System and method for removing specularity from an image |
US8553979B2 (en) * | 2011-11-07 | 2013-10-08 | Tandent Vision Science, Inc. | Post processing for improved generation of intrinsic images |
US8249342B1 (en) * | 2011-11-21 | 2012-08-21 | Tandent Vision Science, Inc. | Color analytics for a digital image |
US8787666B2 (en) | 2011-11-21 | 2014-07-22 | Tandent Vision Science, Inc. | Color analytics for a digital image |
JP5443533B2 (ja) * | 2012-03-22 | 2014-03-19 | 株式会社東芝 | 画像処理装置、画像表示装置及び画像処理方法 |
JP2014078808A (ja) | 2012-10-09 | 2014-05-01 | Toshiba Corp | 画像処理装置、画像処理方法 |
CN110334387B (zh) * | 2019-05-09 | 2022-11-25 | 重庆大学 | 一种基于bp神经网络算法的室内光照预估方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2786261B2 (ja) * | 1989-07-10 | 1998-08-13 | 株式会社日立製作所 | 色彩画像処理方法 |
US5253339A (en) * | 1990-07-26 | 1993-10-12 | Sun Microsystems, Inc. | Method and apparatus for adaptive Phong shading |
US5495536A (en) * | 1991-05-08 | 1996-02-27 | Sandia Corporation | Image processing system and method for recognizing and removing shadows from the image of a monitored scene |
US5774112A (en) * | 1994-10-25 | 1998-06-30 | International Business Machines Corporation | Method and apparatus for tone correction of a digital color image with preservation of the chromaticity of the image |
EP0742536B1 (en) * | 1995-05-11 | 2000-09-13 | Agfa-Gevaert N.V. | Method of recognising one or more irradiation fields |
US6061091A (en) * | 1996-05-30 | 2000-05-09 | Agfa Gevaert N.V. | Detection of and correction for specular reflections in digital image acquisition |
JPH10271326A (ja) * | 1997-03-21 | 1998-10-09 | Sharp Corp | 画像処理装置 |
DE19904372C2 (de) * | 1999-02-03 | 2002-08-01 | Schneider Laser Technologies | Bilddarstellungssystem |
EP1220547A4 (en) * | 1999-09-17 | 2005-09-21 | Nature Technology Co Ltd | IMAGE ENTRY SYSTEM, IMAGE PROCESSOR AND CAMERA THEREFOR |
US7006668B2 (en) * | 1999-12-28 | 2006-02-28 | Canon Kabushiki Kaisha | Image processing method and image processing apparatus |
DE10000779A1 (de) * | 2000-01-11 | 2001-07-12 | Stuttgart Mikroelektronik | Verfahren zur Farbwiedergabe logarithmisch komprimierter Bilder |
JP2002150315A (ja) * | 2000-11-09 | 2002-05-24 | Minolta Co Ltd | 画像処理装置および記録媒体 |
US6792160B2 (en) * | 2001-07-27 | 2004-09-14 | Hewlett-Packard Development Company, L.P. | General purpose image enhancement algorithm which augments the visual perception of detail in digital images |
JP4197858B2 (ja) * | 2001-08-27 | 2008-12-17 | 富士通株式会社 | 画像処理プログラム |
US7031525B2 (en) * | 2002-07-30 | 2006-04-18 | Mitsubishi Electric Research Laboratories, Inc. | Edge detection based on background change |
US7474785B2 (en) * | 2004-07-20 | 2009-01-06 | Arcsoft, Inc. | Video auto enhancing algorithm |
JP3935499B2 (ja) * | 2004-07-26 | 2007-06-20 | 松下電器産業株式会社 | 画像処理方法、画像処理装置および画像処理プログラム |
US7305127B2 (en) * | 2005-11-09 | 2007-12-04 | Aepx Animation, Inc. | Detection and manipulation of shadows in an image or series of images |
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2006
- 2006-04-13 US US11/403,764 patent/US8976174B2/en active Active
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- 2007-01-25 EP EP07762972.3A patent/EP1977414B1/en active Active
- 2007-01-25 WO PCT/US2007/002238 patent/WO2007089624A2/en active Application Filing
- 2007-01-25 JP JP2008552455A patent/JP4910001B2/ja active Active
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EP1977414B1 (en) | 2018-12-26 |
WO2007089624A3 (en) | 2008-05-08 |
EP1977414A2 (en) | 2008-10-08 |
WO2007089624A2 (en) | 2007-08-09 |
EP1977414A4 (en) | 2010-11-10 |
US20070176941A1 (en) | 2007-08-02 |
US8976174B2 (en) | 2015-03-10 |
JP2009524885A (ja) | 2009-07-02 |
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