I have been experimenting with the pcl point cloud library. I have point cloud data coming from 3 different lidars. I filter out the point cloud for each lidar to remove unwanted points in their local frame around each lidar. Then I transform it to map and combine all the points. I noticed that still some point cloud from other lidars appear on the adjusent lidar area as noise. How do I remove those?
For the filtering part, I used passthrough filter from pcl and ROS.