[jitter] Correcting image from convex mirror

Hi all

IŽm doing an installation that tracks people walking in a space with cv.jit.objects. 
As I need the space registered by the camera to be as wide as possible, I am using a convex mirror. 

My question is, how can I correct the šdistortedš image resulting from the mirror to make it šflatšagain? Is there a kind of Quicktime effect for that?

Thanx!
Beatriz