I wonder if you can provide the processed data set. When I use the PCN data set, there are multiple ply files with the same name, such as xxx_1.ply, xxx_2.ply, xxx_3.ply. If they are directly converted into pcd files, the SPM module still cannot read them. I also encountered many unsolvable difficulties when using House3K to generate data sets. So I wanted to ask you if you could provide us with the dataset you used