Map-based Calibration

Map-based Calibration is a tool that utilizes a 3D Map to achieve more precise calibration. By calibrating the LiDAR to match the accurate 3D Map, it enhances calibration accuracy and significantly reduces discrepancies when integrating with the coordinate systems of other devices. This feature proves highly beneficial in large projects that involve the installation of numerous LiDARs and Algo nodes.

note

Currently, this feature supports .ply format for 3D maps.

How to calibrate using 3D map

1. Initially, a rough calibration is required to place each LiDAR into a roughly accurate position.
2. Navigate to Tool > Map Based Calibration to initiate Map-based calibration.
3. Click Load and select a .ply file. Consequently, the 3D map will be loaded. Optionally, you can translate, rotate, or scale the 3D map to align it with your rough calibration.
4. Choose the points on the LiDAR that you want to calibrate.
5. Click Calibrate Selected LiDAR or Calibrate Selected Algo Node if you aim to calibrate all LiDARs connected to the Algo node to which the selected LiDAR is connected.
6. Once the Calibration Stage reaches 100%, you can apply the calibration by clicking Save and Exit if you are satisfied with the calibration status. Alternatively, you can continue the map-based calibration by repeating from step 4.