  Future large arrays of telescopes, used as intensity interferometers, can be
used to image the surfaces of stars with unprecedented angular resolution.
Fast-rotating, hot stars are particularly attractive targets for intensity
interferometry since shorter (blue) wavelength observations do not pose
additional challenges. Starting from realistic surface brightness simulations
of fast-rotating stars, we discuss the capabilities of future intensity
interferometers for imaging effects such as gravity darkening and rotational
deformation. We find that two-telescope intensity correlation data allow
reasonably good imaging of these phenomena, but can be improved with additional
higher order (e.g. three-telescope) correlation data, which contain some
Fourier phase information.
