基于Plücker直线的机载LiDAR点云与航空影像的配准

doi:10.11947/j.AGCS.2015.20140123

摘要/Abstract

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。

关键词: 摄影测量, LiDAR, 配准, Plü, cker直线, 共面条件

Abstract: Registration of aerial image with airborne LiDAR data is a key to feature extraction. A registration model based on Plücker line is proposed. The relative position and attitude relationship between the conjugate lines in LiDAR and image is determined based on Plücker linear equation, which describes line transformation in space, then coplanarity condition equation is established. Finally, coordinate transformation between image point and corresponding LiDAR point is achieved by the spiral movement of Plücker lines in the image. The registration model of Plücker 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.

Key words: photogrammetry, LiDAR, registration, Plücker line, coplanarity condition

中图分类号:

P237

盛庆红, 陈姝文, 费利佳, 柳建锋, 王惠南. 基于Plücker直线的机载LiDAR点云与航空影像的配准[J]. 测绘学报, 2015, 44(7): 761-767.

SHENG Qinghong, CHEN Shuwen, FEI Lijia, LIU Jianfeng, WANG Huinan. Registration of Aerial Image with Airborne LiDAR Data Based on Plücker Line[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(7): 761-767.

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