On applications of point processes to modelling spatial distribution of object constituents

Two pitfalls in modelling spatial arrangement of particles of a studied object by using a point process an discussed and illustrated: i) neglecting of non-zero dimensions of modelled particles, i.e. neglecting the hard core point process model; ii) distortion of the object geometry because of its observation in projections instead of its investigation as a 3D sample, e.g. in study of thick slices of a tissue by using a light microscope