Julian Beever

As I make the images ready for projection, I'm considering the distortion needed for the perspective to look right.  A good example of how this is used is Julian Beever's 3D pavement art, the farther away from the viewing point the longer and wide the image has to be -

Fortunately Photoshop makes this easy with the perspective in free transform - basically distortion in a trapezoid shape.  It will still be a little trial and error though, although I can estimate it using the 3D Postcard tool, for a preview of what angles the perspective shift will look right from.

And I still need to consider the distortion from the projector!

The simulated final image, the perspective transformation, and 45' view above.