在两线束射影对应中，当两线束中心为非固有点时，两线束的射影关系式如何确定？本文给出了适当的解析方法。
In this paper, a proper analytic methods is proposed for determining the projective formulas when their centers are improper points between two line pencils of projective correspondence.
通过分析该模型中物与像的对应关系，得出了射影失真产生的根源是光学系统放大率的不恒定，并与相机的外参数：倾角及视场的大小有着非线性的变化关系。
The reason for Projective distortion that the amplification ratio is not constant but has nonlinear relation with pitch and tilt angles and field of view of cameras was found out.
利用仿射坐标与射影坐标的映射关系，设计了一种有限素整数域上ECC快速算法，使得ECC在电子商务中实际安全应用成为可能。
A fast arithmetic of ECC based over finite prime field is designed by the map of between affine coordinates and projective coordinates. This make it possible that ECC's...
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