Some 3D reconstructions of SEM images and their .obj files

As told by Shanklin, 2016, 2D SEM images can be turned into 3D object models. ''3D surface modeling that can be created using scanning electron microscope absolutely lead to significant understanding of attributes of microscopic surfaces, such as fracture toughness, crack growth and propagation or fracture resistance”''(Shanklin, 2016). I considered SEM images, turned them into .ppm format. The .ppm file has been read by a Fortran program to create the 3D mesh, by means of vertices and faces, saved in .obj file format (see please the folder in the dataset). Here I show some cases: Honeycomb, Pores of freeze-dried solutions, Pores of Chitosan SRT, Microcellular plastic, Biochar, Wood pores, 'Hexagon' detail of Corbaea scandens, Pollen, Saccharomyces cerevisiae, Diatom frustules, Worms, that is a pair of Schistosoma mansoni, and a 'Bassorilievo' and a rendering of Turin Shroud, to show that is it possible to obtain a 3D mesh from pictures. Details and references are given in the .pdf file. The Fortran program is also given to create the 3D mesh. Visualizations of .obj files have been obtained by means of https://3dviewer.net/ and GIMP software.