摘要
在倾斜摄影测量空三解算过程中,镜头畸变很容易引起空三“分层”的问题。从镜头畸变的角度分析了空中三角测量的“分层”问题,并分析引起镜头畸变的因素。针对镜头畸变对空中三角测量的影响,介绍了基于控制点平差进行人工干预和软件校正方法,实验数据证明:通过控制点平差进行镜头畸变的调整方式从航摄比例尺和地面分辨率,到重投影误差,再到径向畸变系数和切向畸变系数,均有明显的优质提升。实践证明该方法可行。
In the process of solving aerial triangulation in inclined photogrammetry,the"stratification"problem is easily caused by lens distortion.This paper analyzed the"stratification"problem from the perspective of lens distortion,and then summarized the factors that couldcause the lens distortion.Aiming at the influenceof lens distortion of aerial triangulation,it mainly introducedtwomethods corrected by control points and software.The experimental data proved that,GCPcorrected methodhad significant quality improvementconsidering the lens distortion from aerial scale,ground resolution,reprojection error,the radial distortion and tangential distortion coefficient.
作者
冼学文
XIAN Xuewen(Zhongshan Dongfeng Surveying and Mapping Engineering Company Limited,Zhongshan Guangdong 528400,China)
出处
《北京测绘》
2021年第4期458-461,共4页
Beijing Surveying and Mapping
关键词
空中三角测量
空三“分层”
镜头畸变
控制点平差
air triangulation
air three"stratification"
lens distortion
control point adjustment
