Virtual Reality (VR) permits the creation of realistic-looking worlds where the user inputs are used to modify in real time the digital environment. Interactivity contributes to the feeling of immersion in the virtual world, of being part of the action that the user experiences. On the other hand, Augmented Reality (AR) technology refers to a perception of a physical real environment whose elements are merged with virtual computer-generated objects in order to create a mixed reality.

The user is under the impression that the virtual and real objects coexist in the same space. The merging of virtual and real objects in an AR application has to run in real time. Virtual objects have to be aligned with real world structures. Both of these requirements guarantee that the dynamics of real world environments remain unchanged after virtual data have been added. AR supplements reality rather than completely replacing it and the user is under the impression that the virtual and real objects coexist in the same space.

Professor De Paolis will tell us new trends in medicine and surgery, where the VR/AR technologies make available tools for the definition of the diagnosis by translating the information contained in medical images into a 3-dimensional virtual representation of the patient with the actual pathologies. This allow the development of a new form of medical education and the use of patient-specific surgical simulators permit to train and rehearse the surgical procedures without any risks for the patient.

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