Important:

I've tried to replace look_at with my own mechanism to get rid of keystone
distortion. I've faced a vector rotation problem, where the base angle of
the rotation had not been determined. I've recognized, that not only
stereo_base (the distance between the eyes of the viewer in the appropriate
metric)  important, but the direction of the vector between the two eyes!
This is the base (zero degrees) of the camera rotation around the distance
vector (the roll of the camera as I know).

With the "monoscopic" camera model this was not an issue, because this can
be corrected by trial and error camera placement. With stereoscopy this must
be the result of precise calculation, otherwise the left and right images
stress your eyes and brain. This could be the source of most stereography
problems arised using PovRay.

Hermann and Harold? What's your opinion about the issue detailed above?

- Vic -

Post a reply to this message