related functions are inside aitom.aitom.pick.dog.particle_picking_dog__util

can start with making it working on a simulated tomogram

Then make it working on a publically avaliable real tomogram, such as
https://www.ebi.ac.uk/pdbe/emdb/empiar/entry/10045/

Related paper:
Pei L, Xu M, Frazier Z, Alber F. Simulating Cryo-Electron Tomograms of Crowded Mixtures of Macromolecular Complexes and Assessment of Particle Picking. BMC Bioinformatics. 2016; 17: 405.