| 约束总体最小二乘在点云拼接中的应用 |
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| 引用本文： | 陈玮娴,袁庆,陈义.约束总体最小二乘在点云拼接中的应用[J].大地测量与地球动力学,2011,31(2):137-141. |
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| 作者姓名： | 陈玮娴 袁庆 陈义 |
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| 作者单位： | 1)同济大学测量与国土信息工程系, 上海 2000922)现代工程测量国家测绘局重点实验室，上海 200092 |
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| 摘 要： | 在两站点云拼接的大角度空间直角坐标转换问题中，由于拟合靶标球心坐标值在两套扫描测站坐标系下均存在误差，提出基于约束总体最小二乘的点云拼接方法，建立附有约束条件的变量中的误差模型，对观测向量和系数阵同时进行修改。经算例证明，与传统的约束最小二乘法相比，可得到更加合理的模型和更高精度的参数解
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| 关 键 词： | 点云 拼接 变量中的误差 约束最小二乘 约束总体最小二乘 |
APPLICATION OF CONSTRAINED TOTAL LEAST-SQUARES TO CLOUD POINT REGISTRATION |
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| Chen Weixian,Yuan Qing,Chen Yi.APPLICATION OF CONSTRAINED TOTAL LEAST-SQUARES TO CLOUD POINT REGISTRATION[J].Journal of Geodesy and Geodynamics,2011,31(2):137-141. |
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| Authors: | Chen Weixian Yuan Qing Chen Yi |
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| Institution: | 1)Department of Surveying and Geo-informatics, Tongji University, Shanghai 2000922)Key Laboratory of Modern Engineering Surveying, SBSM, Shanghai 200092 |
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| Abstract: | The cloud point registration is a peoblem of three dimensional-datum transformation with big rotation angle.As the fitting coordinates of sphere target's centers in the two sets of scanning coordinate systems are both influnenced by errors,we introduce constrained total least-squares(CTLS) method for cloud point registration.We established the errors-in-variables(EIV) model with the constraints and revised the observed vector and the coefficient matrix.The calculated example has proved that the more reasona... |
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| Keywords: | clould points registration error-in-variables(EIV) constrained least-squares(CLS) constrained total least-squares(CTLS) |
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