Direct LiDAR Odometry: Fast Localization with Dense Point Clouds
2021
This paper presents a light-weight frontend LiDAR odometry solution with consistent and accurate localization for computationally-limited robotic platforms. Our Direct LiDAR Odometry (DLO) method includes several key algorithmic innovations which prioritize computational efficiency and enables the use of full, minimally-preprocessed point clouds to provide accurate pose estimates in real-time. This work also presents several important algorithmic insights and design choices from developing on platforms with shared or otherwise limited computational resources, including a custom iterative closest point solver for fast point cloud registration with data structure recycling. Our method is more accurate with lower computational overhead than the current state-of-the-art and has been extensively evaluated in several perceptually-challenging environments on aerial and legged robots as part of NASA JPL Team CoSTAR's research and development efforts for the DARPA Subterranean Challenge.
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