[R-sig-Geo] spatstat residuals.ppm with an intensity given as an image?

[Seth Flaxman]

I've got the intensity of an inhomogeneous Poisson process (fit using
some new methods I'm working on, so not created by spatstat) as an
image object, the observed point pattern as a ppp object, and I'd like
to call residuals.ppm to compute residuals. Is there a simple way to
create a fitted point process model (ppm) from an image and points so
I can pass this directly to residuals.ppm?

Thanks,
Seth