I'm using Imagemodeler to place the projection cameras, then doing the modeling etc in maya. To do this I need to use the same distorted image planes that IM creates when it creates a camera solution.
 
Is there any way to export the image planes? I can do a snapshot, but the images need to be framed perfectly.

Have you tried using "DistoIma"?  It's a DOS based program available from realviz in the freeware section.

You'll have to type the distortion that IM has generated.  But it appears to work.