dilip@ncst.ernet.in (Dilip Khandekar) (11/19/90)
If the pin-hole camera model is used for projection in raytracing and the scene contains a sphere in an extreme corner, the sphere looks like an ellipsoid. It can be shown that this is because of the projection-plane when it intersectes a cone (defined by the rays to every point in the sphere from the center of projection) the resulting curve of intersection is an ellipse. I encountered the problem and would be interested in any method or projection-model which circumvents this problem. If the pin-hole camera model is not a good model for the human eye-brain system then is there any other model which is more accurate? - dilip =============================================================================== Dilip Khandekar Graphics and CAD Divn., email: dilip@ncst.ernet.in National Centre for Software Tech., or uunet!shakti!dilip Juhu, Bombay, INDIA. Tel: +91-022-6201606,6201574. ===============================================================================