利用摄影镜头透视关系实现现场摄影测量的研究

目的通过拍照不同焦距、不同角度下的照片并测量统计不同点的放大倍率，利用概率数理统计理论分析实验数据，得出照片上不同点的放大倍率曲线图。方法基于曲线图的形状，回归出照片上的不同点放大倍率的函数关系式。结果经过照片中任意两点间距离测算利用照片中放大倍率，可以得到照片中未知线段长度。结论运用照片中的放大倍率进行距离测量时，存在约3％的误差，另外拍摄角度对放大倍率的影响较大，而焦距的影响较小。

Research on photogrammetry using the lens perspective transformation

The magnifications of different points of pictures photographed in different foci and different angles were measured, then the curve of magnification for each point of the picture was obtained by the statistical analysis. With the curves, a function for each point＇s magnification was obtained using linear regression and non-linear regression. By this function, the length between two points on the picture can be calculated.