复现FAST_LIVO2【Ubuntu 20.04.6 LTS】
预备1 Ubuntu 和 ROS
依据开源介绍，Ubuntu 16.04~20.04。
https://i-blog.csdnimg.cn/direct/90eaa6b3a9a34ee4bbd23c1b0b37932a.png#pic_center复现版本为：Ubuntu 20.04.6 LTS，ROS noetic。
ROS安装可参考之前的一片博客: ROS安装含检测——鱼香ROS
2 其他库
2.1 PCL
依据开源介绍，PCL>=1.6。
https://i-blog.csdnimg.cn/direct/6ef58d8198434ad7b1a2d09006a51cc6.png#pic_center
2.2 Eigen
依据开源介绍，Eigen>=3.3.4。
https://i-blog.csdnimg.cn/direct/92cba42c2d5b4fb4a89572a14dd75ceb.png#pic_center
2.3 OpenCV
依据开源介绍，OpenCV>=3.2。
https://i-blog.csdnimg.cn/direct/98fc6a584c7349bebff55e9a495fa2ab.png#pic_center
3 Sophus
3.1 安装
git clone https://github.com/strasdat/Sophus.git
cd Sophus
git checkout a621ff
mkdir build && cd build && cmake ..
make
sudo make install
3.2 make报错
https://i-blog.csdnimg.cn/direct/004399f0dc694c4f9ffddd8c03f7f40d.png#pic_center
修改Sophus/sophus/so2.cpp文件https://i-blog.csdnimg.cn/direct/0a384aa9cea5490cb09b30a1b9776e93.png#pic_center 修改为：
SO2::SO2()
{
unit_complex_.real(1.);
unit_complex_.imag(0.);
}
重新cmake并执行后续命令，最终成功安装。
https://i-blog.csdnimg.cn/direct/a99e1e7527b54db1926d92dd671b3d19.png#pic_center
4 Vikit
Vikit contains camera models, some math 和 interpolation functions that we need. Vikit is a catkin project, therefore, download it into your catkin workspace source folder.[作者的说明]
# Different from the one used in fast-livo1
cd catkin_ws/src
git clone https://github.com/xuankuzcr/rpg_vikit.git
5 livox_ros_driver
5.1 Livox-SDK
git clone https://github.com/Livox-SDK/Livox-SDK.git
cd Livox-SDK
cd build && cmake ..
make
sudo make install
5.2 livox_ros_driver
git clone https://github.com/Livox-SDK/livox_ros_driver.git ws_livox/src
cd ws_livox
catkin_make
FAST-LIVO2
在此之前首先把livox_ros_driver添加到source[注意位置]：
source ./devel/setup.sh
cd ~/catkin_ws/src
git clone https://github.com/hku-mars/FAST-LIVO2
cd ../
catkin_make
source ~/catkin_ws/devel/setup.bash
运行
roslaunch fast_livo mapping_avia.launch
rosbag play YOUR_DOWNLOADED.bag
#改变速度
rosbag play -r YOUR_DOWNLOADED.bag
https://i-blog.csdnimg.cn/direct/5feb1b0ccd6b4d08a4040e5a2d324841.png#pic_center
参考
: FAST-LIVO2 : https://github.com/hku-mars/FAST-LIVO2
: 「 Linux调试错误 」Sophus/sophus/so2.cpp:33:26:error: lvalue required as left operand of assignment: https://blog.csdn.net/Robot_Starscream/article/details/88132050
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