2002 Fiscal Year Final Research Report Summary
Development of three-dimensional measuring system of velocity distribution using circular shifting
| Project/Area Number |
11555056
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Fluid engineering
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| Research Institution | MIYAZAKI UNIVERSITY (2000-2002)
Sasebo National College of Technology (1999) |
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Principal Investigator |
KAWASUE Kikuhito Miyazaki University, Engineering, Associate Professor, 工学部, 助教授 (20214645)
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| Co-Investigator(Kenkyū-buntansha) |
KIKUCHI Masanori Miyazaki University, Engineering, Professor, 工学部, 教授 (80091677)
OYA Yuichiro West Japan Fluid Engineering, Researcher, エンジニアリング本部, 研究員
SHIKU Osamu Sasebo National College of Technology, Associate Professor, 助教授 (00235516)
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| Project Period (FY) |
1999 – 2002
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| Keywords | Flow / Measurement / CCD camera / Velocity / Image Processing / Particles / Stereo / Velocity |
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| Research Abstract |
Circular shifting method enables a three-dimensional measurement of particle movement using a single TV camera and an image-shifting device. By introducing a refractor on the TV camera lens, the image of the tracer particle undergoes a displacement on the image plane that is related to the distance between the TV camera and the tracer particle. When the refractor is rotated at high speed (3,600 r/min) during the TV camera exposure, circular streaks appear on the image due to the rotational shift. Since the size of the circular streak is inversely proportional to the distance of the measuring point from the camera, each streak contains 3D information about a measuring point, and this information can be extracted by processing the streak image. In this paper, combination method between circular shifting and stereovision method is introduced. By this combination, defects of each method are compensated and measurement accuracy is improved.
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Research Products
(11 results)
