JP2010537182A - 位相解析測定を行う装置および方法 - Google Patents
位相解析測定を行う装置および方法 Download PDFInfo
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
- G01B11/005—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines
- G01B11/007—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates coordinate measuring machines feeler heads therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2518—Projection by scanning of the object
- G01B11/2527—Projection by scanning of the object with phase change by in-plane movement of the patern
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/50—Depth or shape recovery
- G06T7/521—Depth or shape recovery from laser ranging, e.g. using interferometry; from the projection of structured light
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/50—Depth or shape recovery
- G06T7/55—Depth or shape recovery from multiple images
- G06T7/593—Depth or shape recovery from multiple images from stereo images
-
- 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
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
- G06T2207/30164—Workpiece; Machine component
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Optics & Photonics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
A=オフセット(つまり、任意の背景光を含む、そのピクセルによって記録された対象物体上に投影された干渉縞パターンの平均強度)、
B=そのピクセルによって記録された光度の振幅変調、
Claims (21)
- 位相解析を用いて対象物体を検査するための非接触法であって、
i)プロジェクタが、検査される対象物体の表面上に光学的パターンを投影するステップと、
ii)前記光学的パターンが投影される前記表面の少なくとも第1の画像および第2の画像を得るステップとを含み、
前記表面の前記光学的パターンの位相は、前記対象物体に相対的に前記プロジェクタを移動することによって前記第1の画像と前記第2の画像との間で変化することとを特徴とする非接触法。 - 前記プロジェクタによって投影されるような前記光学的パターンは、前記少なくとも第1および第2の画像について同じであることを特徴とする請求項1に記載の方法。
- 前記少なくとも1つの第1および第2の画像は、撮像デバイスによって得られ、前記撮像デバイスおよび前記プロジェクタは、互いに関して固定された空間関係にあることを特徴とする請求項1または2に記載の方法。
- 前記プロジェクタおよび撮像デバイスは、前記撮像デバイスの透視中心を中心として前記プロジェクタおよび撮像デバイスを回転させることによって画像と画像との間で移動されることを特徴とする請求項3に記載の方法。
- iii)前記少なくとも第1および第2の画像を処理して凹凸形状表面データを取得するステップをさらに含むことを特徴とする請求項1乃至4のいずれかに記載の方法。
- 前記少なくとも第1および第2の画像を処理するステップは、前記表面上の前記光学的パターンの位相を解析するステップを含むことを特徴とする請求項5に記載の方法。
- ステップiii)は、前記少なくとも第1の画像および第2の画像のうちの少なくとも1つの画像を処理して、前記対象物体と前記撮像デバイスとの間の任意の相対的移動を補正するステップを含むことを特徴とする請求項5または6に記載の方法。
- ステップiii)において、前記少なくとも第1および第2の画像内の対応する点は、前記対象物体上の異なる点を表すことを特徴とする請求項5または6に記載の方法。
- ステップiii)は、前記少なくとも第1および第2の画像内の対応する点にわたる前記光学的パターンの位相の変化を解析するステップを含むことを特徴とする請求項8に記載の方法。
- 前記凹凸形状表面データを決定するステップは、前記複数の画像から位相マップを計算するステップを含むことを特徴とする請求項5から9のいずれか一項に記載の方法。
- 前記複数の画像を解析するステップは、前記表面の前記勾配を決定するステップを含むことを特徴とする請求項5から9のいずれか一項に記載の方法。
- 相対的な前記表面の前記勾配を決定するステップは、前記複数の画像から位相シフトマップを計算するステップと、前記位相シフトマップに基づき勾配マップを得るステップとを含むことを特徴とする請求項11に記載の方法。
- 前記勾配マップを積分して前記凹凸形状データを取得するステップをさらに含むことを特徴とする請求項12に記載の方法。
- 前記プロジェクタは、座標位置決め装置上に取り付けられることを特徴とする請求項1乃至13のいずれかに記載の方法。
- 前記対象物体は、測定空間内に配置され、ステップiii)は、前記測定空間内の前記凹凸形状データの前記三次元座標を決定するステップを含むことを特徴とする請求項5から14のいずれか一項に記載の方法。
- 前記光学的パターンは、周期的光学的パターンであることを特徴とする請求項1乃至15のいずれかに記載の方法。
- 位相解析を用いて対象物体を検査するための装置であって、
測定される対象物体の表面上に光学的パターンを投影するように構成されている、前記対象物体に相対的に移動可能であるプロジェクタと、
前記光学的パターンが投影される前記対象物体の複数の画像を得るように構成されている少なくとも1つの撮像デバイスとを備え、
前記プロジェクタは、位相シフト画像を得る間に前記対象物体に相対的に移動されて、前記対象物体上の前記周期的光学的パターンの位相を変化させるように構成されていることを特徴とする装置。 - 位相解析を用いて対象物体を検査するための非接触法であって、任意の適当な順序で、
i)プロジェクタが、検査される対象物体の表面上に周期的光学的パターンを投影するステップと、
ii)少なくとも1つの撮像デバイスが、前記表面上の前記周期的光学的パターンの複数の位相シフト画像を得るステップとを含み、
前記プロジェクタおよび撮像デバイスは、互いに関して固定された空間関係にあり、前記対象物体上の前記周期的光学的パターンの位置は、前記撮像デバイスの透視中心を中心とする前記プロジェクタと対象物体との間の相対的回転によって画像間で移動されることとを特徴とする非接触法。 - iii)前記位相シフト画像を処理して凹凸形状表面データを取得するステップをさらに含むことを特徴とする請求項18に記載の方法。
- コントローラによって実行されたときに、請求項1から16または18から19のいずれか一項に記載の方法に従って、前記機械コントローラに少なくとも1つのプロジェクタ、撮像デバイス、および画像解析装置を制御させる命令を含むことを特徴とするコンピュータプログラムコード。
- 請求項20に記載のコンピュータプログラムコードを格納することを特徴とするコンピュータ可読媒体。
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0716109.4A GB0716109D0 (en) | 2007-08-17 | 2007-08-17 | Non-contact measurement apparatus and method |
GB0716109.4 | 2007-08-17 | ||
GBGB0716080.7A GB0716080D0 (en) | 2007-08-17 | 2007-08-17 | Non-contact measurement apparatus and method |
GB0716080.7 | 2007-08-17 | ||
GBGB0716088.0A GB0716088D0 (en) | 2007-08-17 | 2007-08-17 | Non-contact measurement apparatus and method |
GB0716088.0 | 2007-08-17 | ||
PCT/GB2008/002759 WO2009024757A1 (en) | 2007-08-17 | 2008-08-15 | Phase analysis measurement apparatus and method |
Publications (2)
Publication Number | Publication Date |
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JP2010537182A true JP2010537182A (ja) | 2010-12-02 |
JP5485889B2 JP5485889B2 (ja) | 2014-05-07 |
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Application Number | Title | Priority Date | Filing Date |
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JP2010521467A Expired - Fee Related JP5689681B2 (ja) | 2007-08-17 | 2008-08-15 | 非接触プローブ |
JP2010521466A Expired - Fee Related JP5485889B2 (ja) | 2007-08-17 | 2008-08-15 | 位相解析測定を行う装置および方法 |
JP2010521465A Expired - Fee Related JP5943547B2 (ja) | 2007-08-17 | 2008-08-15 | 非接触測定を行う装置および方法 |
JP2014238225A Pending JP2015057612A (ja) | 2007-08-17 | 2014-11-25 | 非接触測定を行う装置および方法 |
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JP2010521467A Expired - Fee Related JP5689681B2 (ja) | 2007-08-17 | 2008-08-15 | 非接触プローブ |
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JP2010521465A Expired - Fee Related JP5943547B2 (ja) | 2007-08-17 | 2008-08-15 | 非接触測定を行う装置および方法 |
JP2014238225A Pending JP2015057612A (ja) | 2007-08-17 | 2014-11-25 | 非接触測定を行う装置および方法 |
Country Status (5)
Country | Link |
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US (4) | US8605983B2 (ja) |
EP (4) | EP2977719A1 (ja) |
JP (4) | JP5689681B2 (ja) |
CN (3) | CN101821579B (ja) |
WO (3) | WO2009024758A1 (ja) |
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EP2183546A1 (en) | 2010-05-12 |
US20100158322A1 (en) | 2010-06-24 |
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US8605983B2 (en) | 2013-12-10 |
CN101821579A (zh) | 2010-09-01 |
US8923603B2 (en) | 2014-12-30 |
CN101821578A (zh) | 2010-09-01 |
CN101828092A (zh) | 2010-09-08 |
EP2183546B1 (en) | 2015-10-21 |
JP2010537181A (ja) | 2010-12-02 |
EP2183544B1 (en) | 2015-07-15 |
WO2009024756A1 (en) | 2009-02-26 |
EP2977719A1 (en) | 2016-01-27 |
EP2183544A1 (en) | 2010-05-12 |
WO2009024758A1 (en) | 2009-02-26 |
JP5485889B2 (ja) | 2014-05-07 |
EP2183545B1 (en) | 2014-12-17 |
WO2009024757A1 (en) | 2009-02-26 |
US8792707B2 (en) | 2014-07-29 |
JP2010537183A (ja) | 2010-12-02 |
CN101821578B (zh) | 2014-03-12 |
JP2015057612A (ja) | 2015-03-26 |
CN101828092B (zh) | 2014-03-12 |
JP5689681B2 (ja) | 2015-03-25 |
EP2183545A1 (en) | 2010-05-12 |
CN101821579B (zh) | 2013-01-23 |
US20100135534A1 (en) | 2010-06-03 |
JP5943547B2 (ja) | 2016-07-05 |
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