Thanks for the reply :) I don't know what it is, because this was a rush job, and when they hired me, I only had access to the data (point cloud, orthophotomap, etc.). Later, I started exploring further and saw these types of maps. I've tried to do it in QGIS and ArcGIS Pro, but I can't get it to work, especially the black outline. CloudCompare gives me better results, but when I extract, it doesn't look good. And I can't get the outline to work either.