| 双散斑场相移数字干涉计量 |
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| 引用本文： | 郑文,谭玉山.双散斑场相移数字干涉计量[J].光学学报,1991,11(3):73-277. |
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| 作者姓名： | 郑文 谭玉山 |
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| 作者单位： | 西安交通大学机械工程系，西安交通大学机械工程系 西安 710049，西安 710049 |
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| 摘 要： | 本文介绍了一种检测散射表面变形的自动测量系统。将相移和数字图像处理技术应用于数字散斑干涉计量中,毋须中间记录过程,在计算机控制下采集数据和计算相位,产生相位条纹而非相关条纹。用图像处理技术消除散斑随机性引起的噪声。文中给出了面内、离面变形的测量结果。
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| 关 键 词： | 散斑图 干涉计量 相移 |
| 收稿时间： | 1990/6/25 |
Two-speckle-patterns phase-shifting digital interferometry |
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| ZHEN WENG AND TAN YUSHAN.Two-speckle-patterns phase-shifting digital interferometry[J].Acta Optica Sinica,1991,11(3):73-277. |
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| Authors: | ZHEN WENG AND TAN YUSHAN |
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| Abstract: | A digital speckle pattern interferometry system for automatic measurement of deformations of a diffuse object is presented by using phase-stepping and digital signal processing technique. Computer is utilized to take data and calculate phase without an intermediate recording step. Phase frings are produced instead of speckle correlation frings. Noise data points caused by randomness of the speckle are removed by digital signal processing. Two experimental results for the measurement of in-plane and off-plane deformations are presented. |
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| Keywords: | speckle pattern interferometry phase-shifting |
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