1 Fred Books (1992) Final Technical Report to the
National Science Foundation on University of North Carolina's Walkthough
Project stated the following when reporting on stereopsis: "Stereo noticeably
adds to the illusion of presence, but it makes much less difference in
architectural modeling than in most applications. Architectural models have
lots of parallel lines and planes, known to be perpendicular... Obscuration,
perspective and the kinetic depth effect provide so strong a set of cues that
stereo is almost frosting."