发明名称 |
Stereo imaging velocimetry |
摘要 |
A system and a method for measuring three-dimensional velocities at a plurality of points in a fluid employing at least two cameras positioned approximately perpendicular to one another. The cameras are calibrated to accurately represent image coordinates in world coordinate system. The two-dimensional views of the cameras are recorded for image processing and centroid coordinate determination. Any overlapping particle clusters are decomposed into constituent centroids. The tracer particles are 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. The stereo imaging velocimetry technique of the present invention provides a full-field, quantitative, three-dimensional map of any optically transparent fluid which is seeded with tracer particles.
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申请公布号 |
US5905568(A) |
申请公布日期 |
1999.05.18 |
申请号 |
US19970990265 |
申请日期 |
1997.12.15 |
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;GLASGOW, THOMAS K. |
分类号 |
G01N15/02;G01P3/38;G01P5/00;(IPC1-7):G01P3/36;G01N21/00;H04N7/18 |
主分类号 |
G01N15/02 |
代理机构 |
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地址 |
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