基于基线和平面法向量的三维直角坐标转换方法

Three-dimensional rectangular coordinate transformation based on baseline and plane normal vector

针对目前三维直角坐标转换中使用的基于单点整体求解7个转换参数的理论模型,提出利用控制点间的基线和平面法向量进行分步计算转换方法。试验结果表明,构建的两种模型均能使转换精度达到毫米级。

Considering the seven parameters＇ function is different in the transformation, common point error will affect the seven parameters at overall adjustment. This article selects the baseline and plane normal vector through common point, first solve the rotation and scaling parameters accurately in the case of reduce the part of the common point error, then solve the translation parameters through the rotation, scaling parameters and the traditional model.