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Estimation of deviation between circular target center and ellipse imaging center in close-range photogrammetry
Author(s): 
Pages: 250-251,151
Year: Issue:  6
Journal: Science of Surveying and Mapping

Keyword:  circular targetellipse imagingcollinear condition equationdeviation;
Abstract: 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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