JP4550403B2 - 画像処理装置およびプログラム - Google Patents
画像処理装置およびプログラム Download PDFInfo
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- JP4550403B2 JP4550403B2 JP2003403635A JP2003403635A JP4550403B2 JP 4550403 B2 JP4550403 B2 JP 4550403B2 JP 2003403635 A JP2003403635 A JP 2003403635A JP 2003403635 A JP2003403635 A JP 2003403635A JP 4550403 B2 JP4550403 B2 JP 4550403B2
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- 238000012545 processing Methods 0.000 title claims description 33
- 238000004364 calculation method Methods 0.000 claims description 7
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Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/04—Context-preserving transformations, e.g. by using an importance map
- G06T3/047—Fisheye or wide-angle transformations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/80—Analysis of captured images to determine intrinsic or extrinsic camera parameters, i.e. camera calibration
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Studio Devices (AREA)
- Image Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Closed-Circuit Television Systems (AREA)
Description
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(1)後者のパラメータを予測する。(2)後者のフレームの校正が失敗したかかどうか予測する。(3)要求される画像処理装置のパラメータの計算精度を増加させる。
Claims (2)
- 円形画像およびその他の部分を含む画像を取得する画像取得手段と、
前記画像取得手段により取得された画像から、前記円形画像および前記その他の部分の境界であるエッジの少なくとも一部を検出するエッジ検出手段と、
下記数式(1)に従って、前記円形画像の中心座標(u' 0,v' 0)と前記円形画像の半径rと偏角θとをパラメータとして前記円形画像の各画素の座標(u',v')を表現した場合において、
前記検出されたエッジ上の画素の各々について、u' 0-v' 0座標系において、下記数式(2)で表される当該画素を通る直線群を求め、交わる直線群が最大となる位置を前記円形画像の中心点であると決定し、
該決定された中心座標と下記数式(1)とに基づいて、前記半径を算出する算出手段と 前記算出された中心点の座標と半径とを出力する出力手段と
を有する画像処理装置。
u'=u' 0+rcosθ; v'=v' 0+rsinθ (1)
v' 0=u' 0tanθ+v'−u'tanθ (2) - コンピュータに、
円形画像およびその他の部分を含む画像を取得するステップと、
前記取得された画像から、前記円形画像および前記その他の部分の境界であるエッジの少なくとも一部を検出するステップと、
下記数式(1)に従って、前記円形画像の中心座標(u' 0,v' 0)および半径rと偏角θとをパラメータとして前記円形画像の各画素の座標(u',v')を表現した場合において、
前記検出されたエッジ上の画素の各々について、u' 0-v' 0座標系において、下記数式(2)で表される当該画素を通る直線群を求め、交わる直線群が最大となる位置を前記円形画像の中心であると決定するステップと、
該決定された中心座標と下記数式(1)とに基づいて、前記半径および前記偏角を算出するステップと、
前記算出された中心点の座標と半径とを出力するステップと
を実行させる画像処理プログラム。
u'=u' 0+rcosθ; v'=v' 0+rsinθ (1)
v' 0=u' 0tanθ+v'-u'tanθ (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/308,828 US7308131B2 (en) | 2002-12-03 | 2002-12-03 | Representation and coding of panoramic and omnidirectional images |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2004187298A JP2004187298A (ja) | 2004-07-02 |
JP2004187298A5 JP2004187298A5 (ja) | 2007-01-25 |
JP4550403B2 true JP4550403B2 (ja) | 2010-09-22 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003403635A Expired - Fee Related JP4550403B2 (ja) | 2002-12-03 | 2003-12-02 | 画像処理装置およびプログラム |
Country Status (2)
Country | Link |
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US (3) | US7308131B2 (ja) |
JP (1) | JP4550403B2 (ja) |
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2006
- 2006-07-12 US US11/486,171 patent/US7292722B2/en not_active Expired - Lifetime
- 2006-07-12 US US11/486,170 patent/US20060257049A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH1118007A (ja) * | 1997-06-27 | 1999-01-22 | Shogakukan Inc | 全方向性画像表示システム |
JP2002203254A (ja) * | 2000-08-30 | 2002-07-19 | Usc Corp | 曲面像変換方法及びこの曲面像変換方法を記録した記録媒体 |
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US20040105597A1 (en) | 2004-06-03 |
US20060251336A1 (en) | 2006-11-09 |
JP2004187298A (ja) | 2004-07-02 |
US20060257049A1 (en) | 2006-11-16 |
US7292722B2 (en) | 2007-11-06 |
US7308131B2 (en) | 2007-12-11 |
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