Top 5 loop-closure open source projects

SALSA: Semantic Assisted Life-Long SLAM for Indoor Environments (16-833 SLAM Project at CMU)

SLAM package using NDT registration library of Autoware with loop-closure detection (odometry based) referenced from lego_loam.

graph-theoretic framework for robust pairwise data association

Python implementation of RGBD-PTAM algorithm

ROS2 package of tightly-coupled lidar inertial ndt/gicp slam