| 相关识别中的曲面拟合法 |
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| 引用本文： | 王琛影,何小元.相关识别中的曲面拟合法[J].实验力学,2000,15(3):280-285. |
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| 作者姓名： | 王琛影 何小元 |
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| 作者单位： | 1. 东南大学工程力学系,南京,210096
2. 东南大学工程力学系,南京,210096;同济大学固体力学开放实验室,上海,200092 |
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| 摘 要： | 本文讨论了相关识别中的曲面拟合法。利用相关系数在真实匹配点附近的统计特性，通过对相关系数进行曲线（一维）或曲面（二维）拟合，根据其一阶导数确定最大相关系数所在的位置，快速得到亚像素匹配点。与逐步搜索法相比，该方法大大减少了运算次数，提高了数字图像相关运算的速度。
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| 关 键 词： | 亚像素识别 曲面拟合 数字散斑相关分析 数字图像相关识别 |
| 文章编号： | 1001-4888(2000)03-02B0-06 |
| 修稿时间： | 1999-09-25 |
Curved Surface Approximation in Correlation Recognition Method |
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| WANG Chen-ying,HE Xiao-yuan.Curved Surface Approximation in Correlation Recognition Method[J].Journal of Experimental Mechanics,2000,15(3):280-285. |
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| Authors: | WANG Chen-ying HE Xiao-yuan |
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| Institution: | WANG Chen-ying
;(Southeast University, Department of Engineering Mechanics, Nanjing 210096);HE Xiao-yuan
;(Tongji University, Shanghai 20092) |
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| Abstract: | A curved surface approximation method used for correlation recognition calculation is discussed in this paper. By using the statistical properties of the correlation coefficient, a curve or curved surface approximation of correlation coefficient is calculated, and then the matching point is obtained through evaluating its derivative function. Compared to sub pixel progressive searching method, this method enhances the speed of calculation in correlation recognition remarkably. |
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| Keywords: | digital correlation sub-pixel recognition curved surface approximation |
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