High Quality Content by WIKIPEDIA articles! A stereogram is pair of two-dimensional panels depicting the view of a scene or an object from the vantage points of the right and left eyes. Observing the panels superimposed in a stereoscope results in the experience of three-dimensionality by virtue of the fact that object depth is encoded as right/left position difference in the panels. Because in a stereoscope one views a representation rather than a real scene, the word illusion is sometimes associated with a stereogram.