MeshLab

MeshLab is an advanced processor for large 3D models. Ideal for models that arise in 3D scanning, MeshLab provides a full set of editing tools and cleaning filters. MeshLab includes features such as removal of duplicated vertices, automatic filling of holes, a painting interface for smoothing and coloring meshes, and a slicing tool for exporting planar sections of a mesh. Supported file formats include PLY, STL, OFF, OBJ, 3DS, COLLADA, VRML, DXF, GTS, U3D, IDTF, and X3D.