Editing Emerging Research Directions (section)

=== Types of VR ===
Virtual Reality (VR) Systems can be broken down into three different main types. As depicted in Figure 3 below, the three main types consist of Non-Immersive, Semi-Immersive, and Immersive. 


[[File:Types_of_VR_Systems.jpg]]

Figure 3: Types of VR Systems [2].



'''Non-Immersive VR'''
* Non-Immersive VR is not only the least expensive of the different types of VR systems, but also has the least amount of immersion.  Running on a desktop or mobile device, non-immersive VR uses Computer Aided Design (CAD) Systems, and is screen based. 


'''Semi-Immersive VR'''
* In Semi-Immersive VR, the user is still aware and can see themselves. An example of such a system is Cave Automatic Virtual Environment (CAVE). Here, a system of differing projections, speakers, and googles assists in the immersive experience. 


'''Fully Immersive VR'''
* The most immersive VR, Fully Immersive VR, allows the user to be completely engulfed in the virtual reality experience. This is accomplished by Head-Mounted Displays (HMDs) and data gloves.







{| class="wikitable" style="width:100%; text-align:left;"
|+ Types of HMD Devices
|-
! Type
! About
! Devices
|-
| PC VR
| Tethered with PC
| Oculus Rift, HTC Vive
|-
| Console VR
| Tethered with a Game Console
| PlayStation VR
|-
| Mobile VR
| Untethered with PC/Console but with a Smartphone Inside
| Samsung Gear VR, Google Daydream
|-
| Wireless
| All-in-One HMD Device
| Unreleased Intel Alloy
|}