摘要
在基于多角度成像技术的直升机电力巡线系统中,为了完成线路预警需要计算导线与周围物体的相对距离,除需要生成线路走廊所在地区的数字地面模型外,还必须提取三维线路信息.因此,提出了一种利用核线约束对线路中间隔棒进行三维重建的方法,进而可以重建整条电力线的三维信息.现场飞行实验表明,应用所提出的方法可以准确重建电力线路的三维信息,使得系统的物线距离测量达到巡线需要的0.5 m精度要求.
Based on multi-angular imaging technique, the helicopter power line inspection system can reveal the dangerous regions where the surrounding objects are too close to the power line. In order to obtain the relative distance, besides of DSM, the 3D high voltage power line information must be known. An epipolar constraint 3D spacer reconstruction method is proposed, so that based on the reconstructed spacers the whole 3D power line information can be calculated out. The flight experiment result shows that the proposed method can successfully reconstruct 3D power line, and the AMPLI measurement accuracy of the relative distance satisfies the user requirement of 0. 5 m.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第6期629-632,共4页
Journal of Beijing Normal University(Natural Science)
基金
国家"八六三"计划资助项目(2003AA134040)
长江学者和创新团队发展计划资助项目
关键词
直升机电力巡线
三维重构
核线约束
空三平差
helicopter power line inspection
3D reconstruction
epipolar constraint
aerial triangulation
