Presentation on theme: "T.Sharon - A.Frank 1 Multimedia Virtual Reality. 2 T.Sharon - A.Frank Virtual Reality (VR) Definition An artificial reality that projects you into a 3D."— Presentation transcript:
2 T.Sharon - A.Frank Virtual Reality (VR) Definition An artificial reality that projects you into a 3D space generated by the computer. A virtual reality system usually uses: 1.Stereoscopic goggles that provide the 3D imagery. 2.Tracking device: goggles that track head and body movement. "data glove" that tracks hand movements. The tracking device lets you point to and manipulate computer-generated objects displayed into the goggles.
3 T.Sharon - A.Frank Degree of Interaction in VR Solo – One person interacting in a virtual space. Same Place Collaboration – Few users, interacting in a virtual space, in the same physical location. Different Place Collaboration – Few users, interacting in a virtual space, but situated in different physical locations.
4 T.Sharon - A.Frank Degree of Immersion in VR Fully immersive VR applications (where one doesn't experience the surrounding physical and real environment); Semi-immersive VR applications (where a certain degree of immersion is gained, for example via stereo projection); 2D screen renderings of a conceptually 3D space (as in Second Life).
5 T.Sharon - A.Frank Degree of Realism in VR A photo-realistic representation of a real physical location. A representation of a conceptual university campus. A metaphorical or fantasy environment such as a virtual zoo.
6 T.Sharon - A.Frank VR Technical Approaches 1.Head-Mounted –Head-mounted wide-view stereo display. 2.Cave-based –Walls of a room are rear-projection stereo displays. –The user wears goggles to enable viewing in 3D. 3.Chameleon-type –Hand held, or hand moved, display. –Position and orientation are tracked.
7 T.Sharon - A.Frank 1. Head Mounted Boom Mounted Display Head Mounted Display (HMD)
11 T.Sharon - A.Frank Schematic Relationship in HMD System Eyes and display are tightly coupled. Hands are “far” aside of the display. Problem: hands and other objects are hidden. Solution – use camera and Augmented virtuality/reality.
18 T.Sharon - A.Frank Schematic Relationship in CAVE System Eyes and hands are linked and mobile. Display is fixed. Problem “shadow effect”: when another person hides walls, or when an object is supposed to be between two persons.