3d reconstruction using lidar

[dkandy0705]

hi i am student studying lidar data and 3d reconstruction. I use velodyne lidar VLP16 and i usually get pcd files from VeloView which is a lidar software provided by Velodyne. I want to use these pcd files to make a 3d mesh. I ve been searcing for this topic but i cant easily find how can i make 3d mesh by using pcd file. Some of the Youtube lectures told me to use CloudCompare Plugin "poisson recon" to do this job. I tried this but it saids i have to use pcd file with normal. I cant handle this problem by myself. Can you give me some advice to make 3d mesh with pcd files?
Additionally, i want to merge the pcd files into one pcd file does CloudCompare has any options or tools to do this work?

[daniel]

At least you should be able to easily merge (PCD) files as one. Use https://www.cloudcompare.org/doc/wiki/index.php/Merge and eventually select the resulting cloud and save it as a PCD file.

For the normals, if the PCD file is structured, it should be fairly easy to orient the normals. Otherwise it can be a little bit more complex to achieve the proper orientation of all the normals. Anyway, everything happens here: https://www.cloudcompare.org/doc/wiki/i ... %5CCompute