Software keystoning of a projector?
 

I'm curious if anyone has implemented a software keystoning solution for a projector. This would be extremely helpful for a vizcave environment, because the powerwall module assumes that projectors are already keystoned, any projector distortion or warping would result in a mismatch between visual projection and physical world.

It would also be very, very helpful for the new vizMove package Vizard has just begun selling.

I currently have a student working on a solution involving a checkerboard and webcam. It's too early to say how helpful it is. I also have to learn how to implement the transformation matrices as a shader object.

Thanks for the suggestion.