| 数字图象技术在流速测量中的应用 |
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| 引用本文： | 朱娜.数字图象技术在流速测量中的应用[J].排灌机械,1995,13(2):52-56. |
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| 作者姓名： | 朱娜 |
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| 作者单位： | 江苏理工大学计算机工程系 |
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| 摘 要： | 分析了激光散斑测速及微粒图象测速法在非稳流的瞬时速度场测量中的缺陷和局限性。针对这些局限，从理论上探讨了采用数字图象技术的方法测速的优越性，它可以消除目前采用光学方法的局限；包括非常有限的动态速度范围的测量，速度失量方向的不明确及实现实时测量的困难。
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| 关 键 词： | 激光散斑测速 数字图象处理 流速测量 |
Application of Digital Image Processing in Measurement of Velocity Fields of Flows |
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| Zhu Na.Application of Digital Image Processing in Measurement of Velocity Fields of Flows[J].Drainage and Irrigation Machinery,1995,13(2):52-56. |
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| Authors: | Zhu Na |
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| Abstract: | In This paper, the digital image processing technique is proposed for measurement of instantaneous velocity fields of time dependent nows. The new technique will improve the flow measurement by eliminating some restrictions of exisiting optical method such as laser speckle velocimetry and particle imagevelocimetry. These restrlction include the limited dynamic range of the velocity measurement, directional ambiguity of the vclocity vcetor, and the difliculty of a real-time capability. |
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| Keywords: | laser speckle velocimetry digital image processing fourier transform |
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