Glossary - Virtual Reality

Virtual reality imitates the appearance of either the real world or an artificial virtual one. An Australian science fiction writer Damien Broderick is the first person using this term in 1982. This system is mainly used in 3D cinema, video gaming, multiple pieces of training, and medical purposes.

Virtual Reality Environment

Multi-projected environments and virtual reality headsets are two main tools to create realistic descriptions and emotions. Virtual reality enables users to look around, move, and touch items in the artificial world. Head-mounted display in VR headsets generates these effects in front of the eyes. Additionally, rooms designed with numerous high screens can also form these effects. Standard virtual reality combines video and auditory feedback. However, haptic technology also allows force and sensory feedback in the artificial world.

Methods and Types

Simulation is one of the ways of virtual reality, which contains driving simulators. These simulators generate the impression of driving a real vehicle by mimicking its motion. Here, driver input is the main factor that makes an actual vehicle motion a visual one.

Another method of VR is projector-based, which models the actual world. Multiple virtual reality tools, such as construction modeling, contribute to generate this artificial world. 

Virtual reality is also based on avatar images where users are capable of involving in the artificial world. It happens in three-dimensional virtual reality as either an actual video or an avatar. 

Computer graphics and computer vision societies are the main application of image-based VR. Here, this system requires to register 3D data to create realistic simulations carefully. 

The 3D virtual environment also appears in desktop-based VR systems through the desktop monitor. It does not require to use positional tracking devices. The main problem of this system is that it provides users with limited abilities in the artificial world. It is because of the lack of peripheral vision.  

HMD (Head-mounted display) is one of the last versions of VR systems. This type of virtual reality uses a headset that consists of OLED or LCD screens. These monitors are small high resolutions that generate separate descriptions for eyes.  

Mixed reality combines both virtual and real environments to generate an artificial world. In this virtual reality, users are capable of interacting with digital and physical items.