/lidar_imu_calib

automatic calibration of 3D lidar and IMU extrinsics

Primary LanguageC++

lidar_imu_calib

overview

when develop slam based on 3D lidar, we often use imu to provide priori for matching algorithm(icp, ndt), so the transform between lidar and imu need to be calibrated.For matching algorithm, attitude in transfom is more important than position in transform, and position often be set to 0. So this repo concentrate on calibrate attitude component in transform between lidar and imu.

prerequisite

install ndt_omp to system catalog

git clone https://github.com/koide3/ndt_omp.git
cd ndt_omp
mkdir build
cd build
cmake ..
make
sudo make install

step

  1. use rosbag tool record imu and lidar data

    rosbag record /imu /lidar_points

  2. config launch file

    lidar_topic: lidar data topic name
imu_topic: imu data topic name
bag_file: *.bag file record imu and lidar data topic

  3. start

    roslaunch lidar_imu_calib calib_exR_lidar2imu.launch

reference

https://blog.csdn.net/weixin_37835423/article/details/110672571