UAV navigation system using line-based sensor pose estimation  

作　　者：Julien Li-Chee-Ming Costas Armenakis 

机构地区：[1]Department of Earth and Space Science and Engineering,Geomatics Engineering,Lassonde School of Engineering,York University,Toronto,Canada

出　　处：《Geo-Spatial Information Science》2018年第1期2-11,共10页地球空间信息科学学报（英文）

基　　金：This work was supported by NSERC through a Discovery Grant[grant number RGPIN-2015-06211].

摘　　要：This work presents a mapping and tracking system based on images to enable a small Unmanned Aerial Vehicle(UAV)to accurately navigate in indoor and GPS-denied outdoor environments.A method is proposed to estimate the UAV’s pose(i.e.,the 3D position and orientation of the camera sensor)in real-time using only the on-board RGB camera as the UAV travels through a known 3D environment(i.e.,a 3D CAD model).Linear features are extracted and automatically matched between images collected by the UAV’s onboard RGB camera and the 3D object model.The matched lines from the 3D model serve as ground control to estimate the camera pose in real-time via line-based space resection.The results demonstrate that the proposed modelbased pose estimation algorithm provides sub-meter positioning accuracies in both indoor and outdoor environments.It is also that shown the proposed method can provide sparse updates to correct the drift from complementary simultaneous localization and mapping(SLAM)-derived pose estimates.

关 键 词：Pose estimation modelbased tracking NAVIGATION GPS-denied environment 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]