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koide3 avatar koide3 commented on May 15, 2024

Hi @Yukina1996 ,
I'm not sure but it's possible that the map is too large for the downsampling method. The problem may be resolved by changing the VlxelGrid in the following line to ApproximateVoxelGrid which does not cause the leaf size problem.

boost::shared_ptr<pcl::VoxelGrid<PointT>> voxelgrid(new pcl::VoxelGrid<PointT>());

from hdl_localization.

Yukina1996 avatar Yukina1996 commented on May 15, 2024

@koide3 Thank you for the reply.I confirm it's the problem of too big map and I'll try ApproximateVoxelGrid later.
I still have another question that is the imu data so important that localization always failed if we didn't use the imu data at the same time. Have you ever tried lidar localization alone based on a big map???

from hdl_localization.

koide3 avatar koide3 commented on May 15, 2024

@Yukina1996 ,
Yes, I've used the localization without IMU. When the resolution of NDT is small, it could be sensitive to quick rotation without IMU data. The convergence might be improved by increasing the resolution (up to 10m).

from hdl_localization.

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