| Concept | Description |
|---|---|
Virtual Reality (VR) | Immersive computer-generated environment that replaces the real world. Users wear headsets to experience virtual worlds. |
Augmented Reality (AR) | Overlays digital information onto the real world. Enhances real-world experience with virtual elements. |
Mixed Reality (MR) | Combines real and virtual worlds with interaction between physical and digital objects. |
| Hardware Components | Description |
|---|---|
Head-Mounted Displays (HMD) | VR headsets like Oculus Rift, HTC Vive, AR glasses like HoloLens |
Tracking Systems | Inside-out or outside-in tracking for position and orientation |
Input Devices | Controllers, gloves, haptic feedback devices, eye tracking |
Sensors | Accelerometers, gyroscopes, magnetometers for motion detection |
| AR Technologies | Description |
|---|---|
Marker-Based | Uses visual markers (QR codes, images) for object recognition and tracking |
Markerless | Location-based or object recognition AR without markers |
Projection-Based | Projects synthetic light onto real surfaces |
Superimposition | Partially or fully replaces real object view with AR content |
| VR Technologies | Description |
|---|---|
Immersive VR | Full immersion with HMD and tracking systems |
Desktop VR | VR experience on traditional computer monitors |
Mobile VR | VR using smartphones in headsets (Google Cardboard, Samsung Gear VR) |
Cave VR | Room-sized VR environment with multiple screens |
| Development Platforms | Description |
|---|---|
Unity | Popular game engine with AR/VR support and cross-platform deployment |
Unreal Engine | High-fidelity graphics engine for VR experiences |
ARCore | Google's platform for building AR experiences on Android |
ARKit | Apple's framework for creating AR experiences on iOS |
| Key Technologies | Description |
|---|---|
SLAM | Simultaneous Localization and Mapping for environment understanding |
3D Reconstruction | Creating 3D models from real-world objects/scenes |
Computer Vision | Object recognition, tracking, and scene understanding |
Spatial Audio | 3D sound that changes based on user position and orientation |
| Applications | Description |
|---|---|
Gaming | Immersive gaming experiences and interactive entertainment |
Education | Virtual field trips, training simulations, interactive learning |
Healthcare | Surgical training, therapy, medical visualization |
Retail | Virtual try-on, product visualization, virtual stores |
| Challenges | Description |
|---|---|
Motion Sickness | Discomfort caused by sensory conflicts in VR environments |
Hardware Limitations | Battery life, processing power, weight, and cost constraints |
Content Creation | High cost and complexity of developing quality AR/VR content |
Privacy & Security | Data collection from sensors and cameras raises privacy concerns |