Polynomial-Based Geometric Correction with Relief
For the case of older medium-resolution imagery over rugged terrain, it is still interesting being able to apply a simple polynomial model but considering x,y,z coordinates as described in . An important application would be the case of ASTER imagery, which is still very appreciated in Earth Sciences. I tried to use GenerateRPCSensorModel in the past, but the results were very bad (see the end of the discussion in the older list ).
Perhaps just letting the user to set denominators to 1 in GenerateRPCSensorModel could be a way?
 Pala, V., and X. Pons. 1995. “Incorporation of Relief in Polynomial-Based Geometric Correction.” Photogrametrics Engineering & Remote Sensing 61: 935–44. 01_Incorporation_of_Relief_in_Polynomial-Based_Geometric_Correction.pdf