基于圆形度和悬链方程的电力线半自动建模

Semi-automatic power line modeling based on circularity and catenary equation

针对航空影像中电力线匹配与三维建模的不确定性,该文提出一种基于圆形度约束的电力线匹配策略和基于悬链方程的电力线三维建模方法。基于电力线分裂导线分布特征,采用圆形度约束的条件,实现由计算机自动确定同相内同名线段;采用架空线悬链方程,实现了高效、可靠的电力线三维建模。实验证明,该文提出的方法能够高效还原电力走廊中电力线的空间位置,适用于基于影像的电力巡线和电力线建模,及电力走廊三维重建等领域。

Aiming at the uncertainty of power line matching and three-dimensional modeling in aerial image,a matching strategy of power line based on circularity and a method of power line modeling based on catenary equation were proposed in this paper.Based on the distribution of bundled conductors of power line,the constraint of circularity was used to determine the homonymous line automatically with computer;then,catenary equation was used to make the three-dimensional model of power lines efficient and reliable.Experimental results proved that the proposed method could effectively restore the spatial coordinate of the power lines,which was applied to power line inspection and modeling based on images and electricity corridor 3Dreconstruction.