| 近景摄影测量圆形标志与其椭圆构像的中心偏差估计 |
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| 引用本文： | 谭燕,邹峥嵘.近景摄影测量圆形标志与其椭圆构像的中心偏差估计[J].测绘科学,2009,34(6). |
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| 作者姓名： | 谭燕 邹峥嵘 |
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| 作者单位： | 1. 中南大学,信息物理工程学院,长沙,410083;广州市国土资源和房屋管理局番禺分局,广州,511400
2. 中南大学,信息物理工程学院,长沙,410083 |
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| 摘 要： | 圆形标志已广泛应用于近景摄影测量,但由于影像平面与目标平面不能完全平行,所以圆形标志的数字影像一般为椭圆。如果圆形标志点较大,以至于圆形标志中心与其椭圆构像中心的偏差不可忽略。故本文从摄影测量共线条件方程式出发,采用一种基于最小二乘的椭圆拟合算法,推导出偏差计算公式,本文的真正目的在于分析偏差分布规律及偏差间的关系,尽可能降低偏差的影响。
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| 关 键 词： | 圆形标志 椭圆构像 共线条件方程式 偏差 |
Estimation of deviation between circular target center and ellipse imaging center in close-range photogrammetry |
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| TAN Yan,ZOU Zheng-rong.Estimation of deviation between circular target center and ellipse imaging center in close-range photogrammetry[J].Science of Surveying and Mapping,2009,34(6). |
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| Authors: | TAN Yan ZOU Zheng-rong |
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| Abstract: | The circular target had broad appication in close-range photogrammetry, the image of the circular target appeared as an ellipse because the target plane could not be completely parallel to the image plane. The deviation between circular target center and ellipse imaging center is inevitable if circular target is oversized. From collinear condition equation of photogrammetry, a deviation correction formula was derived based on least square ellipse fitting algorithm. The objective is to analyze distribution rule and the relations among deciations, so as to reduce the effect of deviation. |
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| Keywords: | circular target ellipse imaging collinear condition equation deviation |
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