| 基于三次样条插值的激光干涉图的细化研究 |
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| 引用本文： | 朱正辉,缪寅宵.基于三次样条插值的激光干涉图的细化研究[J].宇航计测技术,1999,19(3):12-14,24. |
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| 作者姓名： | 朱正辉 缪寅宵 |
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| 作者单位： | 中国航天工业总公司第一计量测试研究所 |
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| 摘 要： | 在利用Ｚｅｒｎｉｋｅ多项式拟合波面的方法中，干涉图的细化误差直接影响波面的拟合误差。提出了利用三次样条函数插值的方法，将干涉图的灰度值分布曲线转换成严格的光滑曲线，从而通过数值计算方法求出灰度值曲线的极大值和极小值，以达到细化的目的。
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| 关 键 词： | 干涉图 细化 样条函数 |
Study on cubic spline based thinning method for laser Interferogram |
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| Zhu Zhenghui\ Miao Yinxiao.Study on cubic spline based thinning method for laser Interferogram[J].Journal of Astronautic Metrology and Measurement,1999,19(3):12-14,24. |
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| Authors: | Zhu Zhenghui\ Miao Yinxiao |
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| Institution: | Zhu Zhenghui\ Miao Yinxiao |
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| Abstract: | The error of thinning for interferogram directly affect the error of fitting when Zernike polynomials are used to fit the wave surface. Cubic spline interpolation method are presented. The first step of this method is to convert the curve of grayscale to smooth curve, then calculates the minimum maximum property of the curve transformed by numerical method. |
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| Keywords: | Interferogram\ Thinning\ Spline function |
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