摘要
在一个基于全景影像的电子量测系统中,在进行其中的长序列光束法平差时,需要解决两大问题:1.大量计算;2.误差累积。笔者纵观最近的研究发现,通常是利用增量式的位姿估计配合局部光束法平差来降低计算时间;而融合GPS数据和相机位姿估计,可以有效降低累积漂移误差。本文主要设计了一种带限制的光束法平差全景测量电子系统,可以有效控制重投影误差的上限,比现有GPS-视觉融合方法的平均误差低50%。本系统主要可以用于城市大场景和复杂多变的对象数据采集。
In a panorama based electron measure system, two problems occur when bundle adjustment（BA） is applied on long image sequences： the large calculation time and the error accumulation. In recent work, the time is reduced by global adjustment with local incremental structure from motion,and drift is reduced by fusion of GPS and vision. In this paper, we design a method with a limit of beam method to measure the electronic system, which can effectively control the upper limit of the weight projection error, and the average error is 50% lower than that of the existing GPS- visual fusion method.The system can be used to collect the data of large scene and complex and changeable objects in the city.
出处
《电子科学技术》
2017年第1期89-92,101,共5页
Electronic Science & Technology
关键词
全景量测系统
GPS
优化
电子技术
Panoramic Measurement System
GPS
Optimization
Electronic Ttechnique
