摘要
近年来,利用无人机航摄进行立体测图的技术已成为研究的热点。鉴于传统的立体测图方法中存在无观测冗余、小基高比即交会角度不良的因素产生的一些精度稳健性较差的问题,本文提出了一种基于倾斜影像的多片测图方法。该方法不易受交会角大小的限制,利用二维前方交会,同时引入最小二乘原理,可以获得精度比较高的地物坐标,进而提高无人机航测大比例尺测图的精度。利用无人机航摄的影像数据,对所提的方法进行了试验论证。在1∶500的比例尺条件下,试验结果显示平面中误差为0.054 9 m,刺点精度达标率较好。
In recent years,the use of UAV aerial photography for three-dimensional mapping technology has become a hot research.In view of the fact that there are some problems of poor robustness and stability due to the lack of observational redundancy,the small base height ratio,the intersection angle badness,the traditional method of stereo mapping is proposed. The method is not susceptible to the size of the intersection angle.With the use of two-dimensional forward intersection,while the introduction of the least squares principle,you can get a higher accuracy of the coordinates of the object,and thus improve the UAV aerial scale accuracy. Using the UAV aerial image data,the proposed method is experimentally demonstrated.At the scale of 1 ∶ 500,the experimental results show that the error in the plane is 0.054 9 m.The accuracy of the proposed method is better.
作者
李大军
孙涛
郭丙轩
牛科科
梁跃刚
LI Dajun;SUN Tao;GUO Bingxuan;NIU Keke;LIANG Yuegang(School of Surveying and Mapping Engineering,East China University of Teehnology,Nanehang 330013,China;State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China;Wuhan Xuntu Technology Co.Ltd.,Wuhan 430079,China)
出处
《测绘通报》
CSCD
北大核心
2018年第7期83-87,共5页
Bulletin of Surveying and Mapping
基金
国家重点研发计划(2016YFB0502200)
国家自然科学基金(41127901)
关键词
摄影测量
前方交会
无人机
立体测图
最小二乘原理
精度检测
photogrammetry
front intersection
unmanned aerial vehicle
stereogram
least squares principle
precision detection
