I think it would be insanely difficult to accomplish this though...
lets say it used edge detection . then a wall lets say would look lie a trapezoid. the whatever direction it had to 'shear' the trapezoid to make a rectangle would be the direction or angle of the normal vector. ish something like that.
i am probably not spot on with that haha..
but well my question is how would it be possible to recognize a false vanishing point verses a true one.
consider a trapezoidal shape orthogonal to the camera. jitter ould think its actually a sheet slanted.
i think i would still be fun to figure something out like this though.
in a sense this is like making 3d from 2d video..
in algebra terms no transformation from 2d to 3d will be one to one. therefore it is obviously not possible but it could be interesting to play with some of this stuff.
I'm going to look into the links you posted...
appreciate the feedback . i hardly get any on cycling so i don't spend much time on here.