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| 引用本文： | 杨荣华,花向红,游扬声.����ɢ�ҵ�ľֲ�n��������ϼ������ʼ���[J].大地测量与地球动力学,2013,33(3):141-143. |
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| 作者姓名： | 杨荣华 花向红 游扬声 |
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| 作者单位： | 1. 重庆大学土木工程学院,重庆,400030
2. 武汉大学测绘学院,武汉,430079 |
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| 基金项目： | 中央高校基本科研业务费，国家自然科学基金 |
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| 摘 要： | ???????????????????????????????????????ξ??????????????????????????????????????????????????n???????????????????????????????????????????????Ρ????Ρ????????????????????????????????????????????????????????????
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| 关 键 词： | ???? ??? ???? ??????? ????????? |
LOCAL N-TH ORDER SURFACE FITTING AND CURVATURE ESTIMATION BASED ON SCATTERED-POINT CLOUD DATA |
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| Yang Ronghua,Hua Xianghong,and You Yangsheng.LOCAL N-TH ORDER SURFACE FITTING AND CURVATURE ESTIMATION BASED ON SCATTERED-POINT CLOUD DATA[J].Journal of Geodesy and Geodynamics,2013,33(3):141-143. |
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| Authors: | Yang Ronghua Hua Xianghong and You Yangsheng |
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| Institution: | 1) 1)School of Civil Engineering,Chongqing University,Chongqing 4000302)School of Geodesy and Geomatics,Wuhan University,Wuhan 430079 |
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| Abstract: | According to the poor precision of the triangular meshes geometry information extraction and the complicated local high??order surface fitting program of the scattered point cloud, the local ??n????th order surface fast fitting method and its curvature estimation formulas are deduced, which are on basis of the parametric local point cloud data, and the curvature calculation accuracy of the local quadric, cubic and fourth surface fitting has been compared by two practical examples. The comparison results verify that the theoretical formula is not only convenient to programming implementation, but also can ensure the calculation accuracy. |
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| Keywords: | curvature fitting scattered point cloud local surface euclidean distance |
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