Perspective and Stereoscopic Projections
Ian O. Angell · 1985
We have seen that the orthographic projection has the property that parallel lines in three-dimensional space are projected into parallel lines on the view plane. Although very useful, such views do look odd! Our brains are used to the perspective phenomenon of three-dimensional space, and so they attempt to interpret orthographic figures as if they were perspective views. For example, the cubes of figures 9.1 and 10.1 look distorted.