When viewing a normal flat image, your eyes converge exactly on the paper at distance
To understand how a viewer extracts a 3D image from a 2D plane, we can analyze the geometry of the human focal point. ELcap E sub cap L ERcap E sub cap R be the positions of the left and right eyes. be the distance between the eyes and the physical paper. MAGICEYE
Human depth perception relies heavily on —the brain's ability to process the slightly different angles from which our left and right eyes view the world. When viewing a normal flat image, your eyes