Title
Spatiotemporal Camera-Lidar Calibration: A Targetless And Structureless Approach
Abstract
The demand for multimodal sensing systems for robotics is growing due to the increase in robustness, reliability and accuracy offered by these systems. These systems also need to be spatially and temporally co-registered to be effective. In this letter, we propose a targetless and structureless spatiotemporal camera-LiDAR calibration method. Our method combines a closed-form solution with a modified structureless bundle adjustment where the coarse-to-fine approach does not require an initial guess on the spatiotemporal parameters. Also, as 3D features (structure) are calculated from triangulation only, there is no need to have a calibration target or to match 2D features with the 3D point cloud which provides flexibility in the calibration process and sensor configuration. We demonstrate the accuracy and robustness of the proposed method through both simulation and real data experiments using multiple sensor payload configurations mounted to hand-held, aerial and legged robot systems. Also, qualitative results are given in the form of a colorized point cloud visualization.
Year
DOI
Venue
2020
10.1109/LRA.2020.2969164
IEEE ROBOTICS AND AUTOMATION LETTERS
Keywords
DocType
Volume
Sensor fusion, SLAM, field robots
Journal
5
Issue
ISSN
Citations 
2
2377-3766
1
PageRank 
References 
Authors
0.35
0
5
Name
Order
Citations
PageRank
Chanoh Park110.35
Peyman Moghadam216512.92
Soo Hwan Kim3168.11
Sridha Sridharan42092222.69
Clinton Fookes574397.41