JP4951467B2 - 画像相関変位センサにおける相関関数のピーク位置検出方法 - Google Patents
画像相関変位センサにおける相関関数のピーク位置検出方法 Download PDFInfo
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- JP4951467B2 JP4951467B2 JP2007283585A JP2007283585A JP4951467B2 JP 4951467 B2 JP4951467 B2 JP 4951467B2 JP 2007283585 A JP2007283585 A JP 2007283585A JP 2007283585 A JP2007283585 A JP 2007283585A JP 4951467 B2 JP4951467 B2 JP 4951467B2
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/15—Correlation function computation including computation of convolution operations
- G06F17/153—Multidimensional correlation or convolution
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/30—Determination of transform parameters for the alignment of images, i.e. image registration
- G06T7/32—Determination of transform parameters for the alignment of images, i.e. image registration using correlation-based methods
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- General Engineering & Computer Science (AREA)
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- Length Measuring Devices By Optical Means (AREA)
- Image Processing (AREA)
Description
120 ピーク相関関数値点
130 解析領域
140 1D相関関数値大きさプロット
145 「真」の相関関数
150 CFVP
160 真のピーク位置
Claims (1)
- 画像相関変位センサにおける相関関数のピーク位置検出方法であって、
参照画像を取り込むステップと、
変位画像を取り込むステップと、
複数のオフセット位置で、前記参照画像と前記変位画像との少なくとも一部に基づいて各相関関数値点(CFVP)を求めることに基づいて、ピクセル単位で初期ピークCFVPをサーチするステップと、
前記初期ピークCFVPの近傍の解析領域内に含まれるCFVPすべてを各オフセット位置で求めるステップと、
前記初期ピークCFVPの近傍の前記解析領域内に含まれるCFVPに基づいて、ピクセル単位より細かい解像度で予備的な相関関数のピーク位置を推定するステップと、
最終的な相関関数のピーク位置を推定するために曲線あてはめを行うステップと、を含み、
前記曲線あてはめは、予備的な相関関数のピーク位置に基づいて窓関数及び1組の重み付け因子の少なくとも1つによりピクセル単位より細かい解像度で決定されることを特徴とする画像相関変位センサにおける相関関数のピーク位置検出方法。
Applications Claiming Priority (2)
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US11/591,179 US7885480B2 (en) | 2006-10-31 | 2006-10-31 | Correlation peak finding method for image correlation displacement sensing |
US11/591,179 | 2006-10-31 |
Publications (2)
Publication Number | Publication Date |
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JP2008116456A JP2008116456A (ja) | 2008-05-22 |
JP4951467B2 true JP4951467B2 (ja) | 2012-06-13 |
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JP2007283585A Active JP4951467B2 (ja) | 2006-10-31 | 2007-10-31 | 画像相関変位センサにおける相関関数のピーク位置検出方法 |
Country Status (4)
Country | Link |
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US (1) | US7885480B2 (ja) |
EP (1) | EP1918877B1 (ja) |
JP (1) | JP4951467B2 (ja) |
AT (1) | ATE527633T1 (ja) |
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2006
- 2006-10-31 US US11/591,179 patent/US7885480B2/en active Active
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- 2007-10-15 EP EP07118454A patent/EP1918877B1/en active Active
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Also Published As
Publication number | Publication date |
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EP1918877A3 (en) | 2008-06-11 |
JP2008116456A (ja) | 2008-05-22 |
US20080101722A1 (en) | 2008-05-01 |
EP1918877B1 (en) | 2011-10-05 |
EP1918877A2 (en) | 2008-05-07 |
ATE527633T1 (de) | 2011-10-15 |
US7885480B2 (en) | 2011-02-08 |
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