JP4997252B2 - 画像内の照明域を識別する方法 - Google Patents
画像内の照明域を識別する方法 Download PDFInfo
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- 238000005286 illumination Methods 0.000 title claims description 63
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Images
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/12—Edge-based segmentation
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/60—Extraction of image or video features relating to illumination properties, e.g. using a reflectance or lighting model
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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
- G06T2207/10—Image acquisition modality
- G06T2207/10024—Color image
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- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Software Systems (AREA)
- Multimedia (AREA)
- Image Analysis (AREA)
- Image Processing (AREA)
- Color Image Communication Systems (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
Claims (5)
- 画像内の照明域を決定する自動化されコンピュータ化された方法であって、
前記画像内の線形トークンを識別するステップと、ここで、線形トークンは画像の連結領域であり、連結領域の隣接ピクセルは、画像の全てのカラーチャネルで暗端から明端まで正の傾きを有するRGB空間内のシリンダ内に入る異なる色測定値を有し、
前記線形トークンを利用して、直接光源に加えて周辺光源を考慮するモデルであって、直接光源における変化が画像の全てのカラーチャネルで暗端から明端まで正の傾きを有するRGB空間内のシリンダに沿う変化に対応し、各シリンダが画像に示されるシーンの単一のマテリアルに対応する二光源二色性反射モデル(BIDRモデル)の予測に基づいて照明域を識別するステップと
を含む、方法。 - 前記線形トークンを識別するステップは、選択されたピクセルの周囲の局所エリアをテストして、RGB空間にシリンダを形成する線形セグメントの構造を決定することにより実行される、請求項1に記載の方法。
- 前記線形トークンを識別するステップは、そのような各線形トークンが前記画像内の照明変化に対応することを確認するために、識別された各線形トークンをフィルタリングすることを含む、請求項1に記載の方法。
- 前記線形トークンを利用して、照明域を識別するステップは、画像の線形トークンをクラスタ化してトークン群にし、各トークン群のマテリアル色を計算することにより実行される、請求項1に記載の方法。
- 前記画像の線形トークンをクラスタ化してトークン群にし、各トークン群のマテリアル色を計算するステップは、トークン群のBIDRシリンダを計算することにより実行される、請求項4に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/341,753 | 2006-01-27 | ||
US11/341,753 US7995058B2 (en) | 2006-01-27 | 2006-01-27 | Method and system for identifying illumination fields in an image |
PCT/US2007/002236 WO2007089623A2 (en) | 2006-01-27 | 2007-01-25 | Method and system for identifying illumination fields in an image |
Publications (2)
Publication Number | Publication Date |
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JP2009524884A JP2009524884A (ja) | 2009-07-02 |
JP4997252B2 true JP4997252B2 (ja) | 2012-08-08 |
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JP2008552454A Active JP4997252B2 (ja) | 2006-01-27 | 2007-01-25 | 画像内の照明域を識別する方法 |
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Country | Link |
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US (1) | US7995058B2 (ja) |
EP (3) | EP2752791B8 (ja) |
JP (1) | JP4997252B2 (ja) |
WO (1) | WO2007089623A2 (ja) |
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US8144978B2 (en) * | 2007-08-01 | 2012-03-27 | Tandent Vision Science, Inc. | System and method for identifying complex tokens in an image |
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US20090033755A1 (en) * | 2007-08-03 | 2009-02-05 | Tandent Vision Science, Inc. | Image acquisition and processing engine for computer vision |
US8175390B2 (en) * | 2008-03-28 | 2012-05-08 | Tandent Vision Science, Inc. | System and method for illumination invariant image segmentation |
US7995854B2 (en) * | 2008-03-28 | 2011-08-09 | Tandent Vision Science, Inc. | System and method for identifying complex tokens in an image |
US8139850B2 (en) * | 2008-12-05 | 2012-03-20 | Tandent Vision Science, Inc. | Constraint generation for use in image segregation |
US20100142846A1 (en) * | 2008-12-05 | 2010-06-10 | Tandent Vision Science, Inc. | Solver for image segregation |
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JP5517685B2 (ja) * | 2009-04-14 | 2014-06-11 | キヤノン株式会社 | 画像処理装置および方法 |
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US8194975B2 (en) * | 2009-06-29 | 2012-06-05 | Tandent Vision Science, Inc. | Use of an intrinsic image in face recognition |
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JP5772446B2 (ja) * | 2010-09-29 | 2015-09-02 | 株式会社ニコン | 画像処理装置及び画像処理プログラム |
US8542917B2 (en) * | 2010-11-10 | 2013-09-24 | Tandent Vision Science, Inc. | System and method for identifying complex tokens in an image |
US8787662B2 (en) * | 2010-11-10 | 2014-07-22 | Tandent Vision Science, Inc. | Method and system for identifying tokens in an image |
US8787666B2 (en) | 2011-11-21 | 2014-07-22 | Tandent Vision Science, Inc. | Color analytics for a digital image |
US8249342B1 (en) * | 2011-11-21 | 2012-08-21 | Tandent Vision Science, Inc. | Color analytics for a digital image |
US8913829B2 (en) | 2012-06-05 | 2014-12-16 | Tandent Vision Science, Inc. | Automatic processing scale estimation for use in an image process |
US8811732B2 (en) | 2012-08-17 | 2014-08-19 | Tandent Vision Science, Inc. | Weighted entropy minimization for optimizing a log-chromaticity normal for use in an image process |
US8842907B2 (en) | 2012-08-17 | 2014-09-23 | Tandent Vision Science, Inc. | Method for performing a multi-clustering merge for use in an image process |
US8842910B2 (en) | 2012-08-17 | 2014-09-23 | Tandent Vision Science, Inc. | Spatially varying log-chromaticity normals for use in an image process |
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US8934735B2 (en) | 2012-09-07 | 2015-01-13 | Tandent Vision Science, Inc. | Oriented, spatio-spectral illumination constraints for use in an image progress |
CN105335962A (zh) * | 2015-08-31 | 2016-02-17 | 中国烟草总公司广东省公司 | 一种烟田采集图像分割方法 |
US10198797B2 (en) * | 2015-09-09 | 2019-02-05 | Ichikawa Soft Laboratory Co., Ltd. | Apparatus correcting shading without taking optical characteristics into consideration and method thereof |
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- 2006-01-27 US US11/341,753 patent/US7995058B2/en active Active
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2007
- 2007-01-25 JP JP2008552454A patent/JP4997252B2/ja active Active
- 2007-01-25 EP EP13188111.2A patent/EP2752791B8/en active Active
- 2007-01-25 EP EP12173037.8A patent/EP2546781B1/en active Active
- 2007-01-25 EP EP07717073.6A patent/EP1977371B1/en active Active
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Publication number | Publication date |
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US20070177797A1 (en) | 2007-08-02 |
JP2009524884A (ja) | 2009-07-02 |
EP2546781A2 (en) | 2013-01-16 |
EP1977371A4 (en) | 2011-05-25 |
WO2007089623A3 (en) | 2008-04-10 |
EP1977371B1 (en) | 2013-12-11 |
WO2007089623A2 (en) | 2007-08-09 |
EP2752791B8 (en) | 2019-10-30 |
US7995058B2 (en) | 2011-08-09 |
EP2752791B1 (en) | 2019-08-07 |
EP1977371A2 (en) | 2008-10-08 |
EP2752791A1 (en) | 2014-07-09 |
EP2546781B1 (en) | 2016-11-09 |
EP2546781A3 (en) | 2013-02-06 |
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