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> > 您好!感谢您出色的工作!我有一个问题想请教您,目前我运行自己的avia采集的数据,立马漂移,请问需要如何修改您的代码才能正常运行,或者我是不是哪里参数设置的不对?期待您的答复 > > 请问是和IMU一起使用吗,当前版本我们没有计划开源IMU版本,如果需要加上IMU,你可以参考 [FAST-LIO](https://github.com/hku-mars/FAST_LIO);如果是单雷达跑,你需要提供去畸变后的点云,因为程序中暂时没有点云去畸变功能 请教一下,你们有对比您提到的没有开源的IMU版本和FAST-LIO的精度吗?效果谁更好?

@codehory Hi, did you run it successfully? What's your version of Ubuntu and pcl? I met an error: (gdb) Program received signal SIGSEGV, Segmentation fault. Undefined command: "Program". Try "help"....

@zfc-zfc Hi, did you meet the node(ros_calib_init) died when run the command "roslaunch linkalibr ros_calib_init.launch"? started roslaunch server http://minzhus:45557/ SUMMARY ======== CLEAR PARAMETERS * /ros_calib_init/ * /ros_calib_init_optimizer/ PARAMETERS * /ros_calib_init/bag_durr:...

> > 请问在标定激光雷达和IMU的外参时,要求确保地面足够平坦,这种情况下IMU在Z轴方向的激励不够充分,那么雷达和IMU在z轴方向的外参标定效果会不会不好呢? > > 你好,感谢您提出的问题。(我们上传的这一个版本lidar2imu有点bug,后面会再更新一版,另外这里起名imu也有点不妥,应该是lidar到pose-sensor的外参标定,后续也会修改一下哈)。您提到的平面运动确实会影响z轴的标定,所以这里我们直接用测量值作为z轴标定的结果。不过,我们后面更新的版本也会解决因为平面运动z轴无法标定的问题。 您这里提到是lidar到pose-sensor的外参标定,那标定工具的输入项“lidar_pose_file: Poses file from the IMU sensor”,可以把它理解为imu的pose经过利用lidar-imu初始外参转换后的pose值吗?

> @zhkai929 , Thank you, it solved my problem. There are two pcl version on my pc, one is pcl1.7 installed from ros, and another is pcl1.8 installed by myself...

> > > > > > > > > 您好现在的radar2lidar和radar2camera精度是可以用的吗。 > > 手动标定的精度都是可以的哈,在线标定的精度我们正在优化,后续都会进行开源的哈 请问对于camera2imu,哪种场景有助于提高在线标定精度?

> @liang0724s 你好,麻烦请问一下这个lidar pose file确实是rtk的pose经过初始外参转换过后的吗? @lingbo-yu 你好,你可以从函数ProcessLidarFrame的点云坐标系转换过程中理解这个lidar pose file.

This error is most likely caused by the failure to detect feature points(Corner---1, Surf---2, NonFeature---3) in current frame. You can check the node "LidarFeatureExtractor".

> @liang0724s > > Well, I received 4 emails from this issue notification. > > My environment: > archlinux > pyenv + virtualenv > python 3.6.4 > pip 18.1 >...

@MyJoiT, I'm sorry to trouble you. I forget to ask you which version I should install for tensorflow: CPU or GPU? From the compile error info I done before,it reminds...