发明名称 |
Stereo imaging velocimetry system and method |
摘要 |
A system and a method is provided for measuring three-dimensional velocities at a plurality of points in a fluid employing at least two cameras positioned approximately perpendicular to one another. Image frames captured by the cameras may be filtered using background subtraction with outlier rejection with spike-removal filtering. The cameras may calibrated to accurately represent image coordinates in a world coordinate system using calibration grids modified using warp transformations. The two-dimensional views of the cameras may be recorded for image processing and particle track determination. The tracer particles may be tracked on a two-dimensional basis and then stereo matched to obtain three-dimensional locations of the particles as a function of time so that velocities can be measured therefrom.
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申请公布号 |
US6603535(B1) |
申请公布日期 |
2003.08.05 |
申请号 |
US20020232862 |
申请日期 |
2002.08.30 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
MCDOWELL MARK |
分类号 |
G01P5/00;G06T7/20;(IPC1-7):G01P3/36;G01N21/00;H04N7/18 |
主分类号 |
G01P5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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