Glossary
Searchable terminology from accessibility, web standards, and related fields.
11 results found in extended reality.
- Augmented Reality (AR)
- A technology that overlays digital information—such as images, text, or 3D objects—onto the real-world environment in real time, typically viewed through a head-mounted display, smartphone, or tablet.…
- Degrees of Freedom (DoF, 3DoF, 6DoF)
- In virtual and extended reality, degrees of freedom refers to the number of independent movement axes available to a user within a virtual environment. Three degrees of freedom (3DoF) allows rotationa…
- Hand Tracking (Gesture Tracking, Hand Gesture Recognition)
- A technology that detects and tracks the position, orientation, and movements of a user's hands and fingers without requiring physical controllers, typically using cameras and computer vision algorith…
- Head-Mounted Display (HMD, VR Headset, AR Headset)
- A wearable device worn on the head that places a display in front of the user's eyes to present virtual or augmented content. HMDs range from fully immersive VR headsets (like Meta Quest) that replace…
- HoloLens (Microsoft HoloLens)
- A self-contained, wearable mixed reality headset developed by Microsoft that overlays interactive holograms onto the user's real-world environment. HoloLens uses spatial mapping, gaze tracking, gestur…
- Immersive Virtual Reality (IVR, Immersive VR)
- A form of virtual reality that uses head-mounted displays (HMDs) with near-full field of view, positional tracking, and often gesture-based controllers to create a sense of being physically present in…
- Mixed Reality (MR)
- A spectrum of technologies that blend real and virtual environments, allowing digital and physical objects to coexist and interact in real time. Mixed reality encompasses both augmented reality (digit…
- Spatial Mapping (Environment Mapping, 3D Environment Scanning)
- A technology used in mixed reality and augmented reality headsets that scans and creates a digital representation of the physical environment in real time. Spatial mapping identifies surfaces such as …
- Video Passthrough (Passthrough, Camera Passthrough)
- A feature in VR headsets that uses external cameras to capture the real-world environment and display it on the headset's internal screens, allowing users to see their surroundings without removing th…
- Virtual Reality (VR)
- An immersive technology that creates a fully computer-generated environment, replacing the user's view of the real world with a simulated one. VR is typically experienced through a head-mounted displa…
- XR Accessibility User Requirements (XAUR)
- A W3C document that provides accessibility guidelines and user requirements specifically for extended reality (XR) applications, including virtual reality, augmented reality, and mixed reality. XAUR i…