A ROS package of DCL-SLAM: Distributed Collaborative LiDAR SLAM Framework for a Robotic Swarm.

The HD video of the demonstration of DCL-SLAM is avaliable at BiliBili.

• Ubuntu ROS (Robot Operating System on Ubuntu 18.04 or 20.04)
• Python (For wstool and catkin tool)
• CMake (Compilation Configuration Tool)
• Boost (portable C++ source libraries)
• PCL (Default Point Cloud Library on Ubuntu work normally)
• Eigen (Default Eigen library on Ubuntu work normally)

sudo apt-get install cmake libboost-all-dev python-wstool python-catkin-tools

• GTSAM (Georgia Tech Smoothing and Mapping library)
• livox_ros_driver (The driver for Livox LiDAR)

These prerequisites will be installed during the compilation.

Set up the workspace configuration:

mkdir -p ~/cslam_ws/src
cd ~/cslam_ws
catkin init
catkin config --merge-devel
catkin config --cmake-args -DCMAKE_BUILD_TYPE=Release

Then use wstool for fetching catkin dependencies:

cd src
git clone https://github.com/PengYu-Team/DCL-SLAM.git
git clone https://github.com/PengYu-Team/DCL-LIO-SAM.git
git clone https://github.com/PengYu-Team/DCL-FAST-LIO.git
wstool init
wstool merge DCL-SLAM/dependencies.rosinstall
wstool update

Build DCL-SLAM

catkin build dcl_lio_sam
catkin build dcl_fast_lio

• S3E dataset. The datasets are configured to run with default parameter.

roslaunch dcl_slam run.launch
rosbag play *your-bag-path*.bag

• Other dataset. Please follow LIO-SAM and FAST-LIO2 to set your own config file for the dataset in "config/your-config-file.yaml", and change the path in "launch/single_ugv.launch".

The paper is avaliable at site, and please cite:

@article{DBLP:journals/corr/abs-2210-11978,
  author    = {Shipeng Zhong and
               Yuhua Qi and
               Zhiqiang Chen and
               Jin Wu and
               Hongbo Chen and
               Ming Liu},
  title     = {{DCL-SLAM:} {A} Distributed Collaborative LiDAR {SLAM} Framework for
               a Robotic Swarm},
  journal   = {CoRR},
  volume    = {abs/2210.11978},
  year      = {2022},
  url       = {https://doi.org/10.48550/arXiv.2210.11978},
  doi       = {10.48550/arXiv.2210.11978},
  eprinttype = {arXiv},
  eprint    = {2210.11978},
  timestamp = {Tue, 25 Oct 2022 14:25:08 +0200},
  biburl    = {https://dblp.org/rec/journals/corr/abs-2210-11978.bib},
  bibsource = {dblp computer science bibliography, https://dblp.org}
}

• DCL-LIO-SAM adopt LIO-SAM as front end (Shan, Tixiao and Englot, Brendan and Meyers, Drew and Wang, Wei and Ratti, Carlo and Rus Daniela. LIO-SAM: Tightly-coupled Lidar Inertial Odometry via Smoothing and Mapping).

• DCL-FAST-LIO adopt FAST-LIO2 as front end (Xu, Wei, Yixi Cai, Dongjiao He, Jiarong Lin, and Fu Zhang. Fast-lio2: Fast direct lidar-inertial odometry).

• DCL-SLAM is based on a two-stage distributed Gauss-Seidel approach (Siddharth Choudhary and Luca Carlone and Carlos Nieto and John Rogers and Henrik I. Christensen and Frank Dellaert. Distributed Trajectory Estimation with Privacy and Communication Constraints: a Two-Stage Distributed Gauss-Seidel Approach).

• DCL-SLAM is based on outlier rejection of DOOR-SLAM (Lajoie, Pierre-Yves and Ramtoula, Benjamin and Chang, Yun and Carlone, Luca and Beltrame, Giovanni. DOOR-SLAM: Distributed, Online, and Outlier Resilient SLAM for Robotic Teams).