基于Plücker直线的机载LiDAR点云与航空影像的配准  

Registration of Aerial Image with Airborne LiDAR Data Based on Plücker Line

作　　者：盛庆红[1] 陈姝文[1] 费利佳 柳建锋 王惠南[1] 

机构地区：[1]南京航空航天大学航天学院,江苏南京210016

出　　处：《测绘学报》2015年第7期761-767,共7页Acta Geodaetica et Cartographica Sinica

基　　金：国家自然科学基金(41101441;60974107);南京航空航天大学研究生创新基地开放基金(kfjj130133)~~

摘　　要：机载LiDAR点云与航空影像的配准是地物提取的关键。本文提出了基于Plücker直线的机载LiDAR点云与航空影像的配准模型。基于三维线空间线变换Plücker直线方程,确定点云和影像中的同名直线间的相对位姿关系,建立Plücker直线共面条件方程,通过影像上的Plücker直线在三维线空间中的螺旋运动,实现像点到其对应LiDAR点的坐标变换。结果表明,Plücker直线共面条件配准模型简洁,将旋转和平移统一处理,避免了两者间的耦合误差,提高了配准精度,为获取高质量的地球三维空间信息提供了技术支持。Registration of aerial image with airborne LiDAR data is a key to feature extraction. A registra- tion model based on Plucker line is proposed. The relative position and attitude relationship between the conjugate lines in LiDAR and image is determined based on Plucker linear equation, which describes line transformation in space, then coplanarity condition equation is established. Finally, coordinate transforma- tion between image point and corresponding LiDAR point is achieved by the spiral movement of Plucker lines in the image. The registration model of Plucker linear coplanarity condition equation is simple, and jointly describes the rotation and translation to avoid Coupling error between them, so the accuracy is approved. This research provides technical support for high-quality earth spatial information acquisition.

关 键 词：摄影测量 LIDAR 配准 Plücker直线 共面条件 

分 类 号：P237[天文地球—摄影测量与遥感]