Starshades and interferometry for exoplanet imaging

We can hope that, in a near future, external occulter systems, called Starshade will allow the detection of exo-Earth type exoplanets, but as unresolved points.  The telescopes used will be of a few meters.To get real multi-pixels images of  exoplanets,  interferometry with diluted apertures separated from each other by several hundred meters will be necessary. Can we combine interferometry and external occulters? This is the problem that we examine in our work.