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This repo is modified based on LIO_SAM, which remove the feature extraction module and makes it easier to adapt your sensor.

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Hi, great work in making LIO-SAM work with 6DOF IMU and without depending on the robot_localization modules! Just thought to make a small remark. I had trouble getting the GPS...

您好,这个代码可以去除动态障碍物吗?谢谢回复

Hi, thank you for sharing your code. I am currently trying to run it on ROS Noetic, Ubuntu 20.04 however am unable to fix an error during the catkin_make step....

Thanks for your great work. I recently tested this solution on MulRan dataset, but got drifting on every subset after running for couple seconds. It warns about 'large velocity, reset...

[ 89%] Linking CXX executable /home/nvidia/liorf-raw/devel/lib/liorf/liorf_imageProjection /usr/bin/ld: 当搜索用于 /home/nvidia/liorf-raw/src/liorf-main/lib/libCommonLib.so 时跳过不兼容的 -lCommonLib /usr/bin/ld: 当搜索用于 //usr/local/lib/libCommonLib.so 时跳过不兼容的 -lCommonLib /usr/bin/ld: 找不到 -lCommonLib collect2: error: ld returned 1 exit status liorf-main/CMakeFiles/liorf_imageProjection.dir/build.make:768: recipe for target...

ENV: ubuntu 22.04 | ros-humble | Eigen 3.4 | gtsam 4.2 from source(using system eigen) In "gtsam 4.2", the author define in "Vector.h" as below: ```c++ 38 typedef Eigen::VectorXd Vector;...

我个人理解:原始版本使用9轴imu可以对初始位姿的姿态进行赋值,这也是为了配合后面imuPreintegration部分的使用,应为imuPreintegration中使用gtsam封装好的imu预积分算法。gtsam封装好的imu预积分要求位姿的参考系(位姿原点)要和重力对齐的(可向上或向下)。 问题:您修改的6-axis适配是否考虑了重力对齐问题? 如果我的雷达是倾斜安装的,那么您的算法还能否正常运行?

@YJZLuckyBoy I encountered a warning message in my ROS system with the following content: Large velocity detected, triggering IMU-preintegration reset and unable to build proper map of the environment 1....

 您好,我目前在建图过程中加入RTK的时候碰到了一些问题,然后我也阅读了您修改后的代码,但是还是有疑问,所以想请教一下,目前雷达和RTK之间是有一定的距离和旋转角度的,这个外参在哪里配置呢?  liosam 的原版本是通过修改launch/include/config/robot.urdf.xacro文件,“不然robot_localization功能包无法发布"odometry/gps",修改此文件主要是添加imu->base_link,gps->base_link的tf变换,供robot_localization的节点查找并对IMU数据和GPS数据进行转换 ”, 这是您的博客写的,但是您修改后的liorf 已经不使用 robot_localization 了,那这个外参我应该在哪里,怎么配置呢? 代码里面没有看到可以配置的地方。  另外就是我发现,如果我不配置这个外参,直接用这个RTK的数据,也可以建图,就是有2个问题,一是建图的时候,经纬度里程计和激光的里程计会有一个很大的方向偏差,大约90度,然后过了一会儿,激光里程计的方向会做一个很大角度的突然调整,然后后续就按照这个方向来走了,应该是激光的里程计的方向被RTK的强制纠正过来了,这很奇怪; 第二个问题是使用RTK的高度数据的时候,会出现激光里程计往上Z轴漂移,但是走着走着,隔了一段距离后,突然被RTK拉下来的情况,然后就导致地图出现了一个明显的断层,激光里程计也出现了一个明显的阶跃,请问这种情况该怎么处理,您有经验吗? Hello, I have encountered some issues while adding RTK during the mapping process. I have also...