A technique for making realistic three-dimensional images of objects

Two 151.8-cm-diam semicircular parabolic mirrors of optical quality are the essential components of an apparatus that creates highly realistic three-dimensional images of objects. The apparatus is being used to explore the relationship between vision and touch in infancy by creating a discrepancy between what is seen (a tangible-looking object) and what is felt. Previous attempts to study intersensory coordination in this manner have failed due to lack of realistic images. Other uses for the apparatus include the creation of illusory surfaces to study the development of expectations about the tangible surface properties of visible objects.