Simple imposter distortion estimation

W. Pasman, revised 23/10/1

d=distance between optimal viewpoint and imposter
dobj=distance between optimal viewpoint and frontside of object
ef=distance between imposter and front side of object
eb=distance between imposter and back side of object
r= radius of object (=ef+eb)
θ=distance (angle) from frontal view

Here distortion is the max angular displacement of pixels on the object's surface.

Plots

Note on this plot. Distance to front side of object is fixed dobj. So increasing distance to imposter d
shifts the imposter more towards the back face. Of cource distortion=0 when the imposter hits the back face.