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2.03B Common Types and Interface Devices and Systems of Virtual Reality. 2.03 Explore virtual reality. Types of Virtual Realities. Types of Virtual Realities. Desktop Uses 3-D Graphics Does not require additional equipment. Immersive Requires additional equipment.
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2.03B Common Types and Interface Devices and Systems of Virtual Reality 2.03 Explore virtual reality.
Types of Virtual Realities • Desktop • Uses 3-D Graphics • Does not require additional equipment. • Immersive • Requires additional equipment. • Is the most effective of Virtual Reality technologies. • Eyes, ears, or other body senses are isolated from real environment and fed information that is generated by the computer. • Telepresence • Allows a person to interact with another live, real place at a different physical location other than their actual location. • Involves life-size images. • In some situations, participants may be able to manipulate devices or the environment in the remote location.
Interface Devices Head-mounted display (HMD) Facial sensor/body suit
Interface Devices Wand Data glove
Head-Mounted Display (HMD) • Device on top of helmet signals head movements. • A computer continually updates the simulation to reflect new perspectives. • Its viewing screen adds depth to flat pictures. • Blocks out surrounding environment. • Is popular with the entertainment industry.
Data Glove Programs the computer to change modes in response to gestures made with data gloves. • Some use fiber optic cables. • Some use strain sensors over joints. Facial sensor/body suit Sensors read facial expressions/body movements and transfer information to the computer for animation purposes.
Wand • Is simplest of interface devices. • Most have on/off buttons. • Some have knobs, dials, or joy sticks. • Wands operate with six degrees of freedom. • By pointing a wand at an object, its position and orientation can be changed in any of six directions forward or backward, up or down, or left or right • Example of Use: Biologists use wands like scalpels to slice tissue samples from virtual brains.
Interface Systems Three common systems: • HMD – Head-mounted Display • BOOM – Binocular Omni Orientation Monitor • CAVE – Automatic Virtual Environment
BOOM(Binocular Omni Orientation Monitor) • Is similar to HMD – but no helmet. • Viewing box suspended from rotating arm. • Uses handles on box sides to move image around. • Buttons on handles allow user to interact with object. • Can also hook up data gloves.
CAVE • One of the newest, most "immersive" virtual environments. • 10 x 10 x 9-foot darkened cubicle. • Is like climbing into the computer’s screen. • Display enables user to experience the. sensation of being "inside" the data.
Advantages of CAVE • Only need special glasses and a wand instead of clunky equipment. • Has a large field of view of data that is projected in stereoscopic images onto the walls and floor of the CAVE. • Multiple users can be in CAVE at same time. • Sound can be added to images.
Shared Virtual Environments • In this illustration, three networked users at different locations (anywhere in the world) meet in the same virtual world by using a BOOM device, a CAVE system, and a Head-mounted Display. • All users see the same virtual environment from their respective points of view. • Each user is presented as a virtual human (avatar) to the other participants. • The users can see each other, communicate with each other, and interact with the virtual world as a team.
Review Common virtual reality • Types • Interface devices • Interface systems