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    HCI & Computer Graphics
    COMP3145
    Progress0 / 73 topics
    Topics
    1. The Human: Input-output channels2. Human memory3. Thinking, Reasoning, Problem solving4. Emotions and Individual differences5. Psychology and design of interacting systems6. The Computer: Text entry devices7. Positioning, Pointing, and drawing devices8. Display devices9. Devices for virtual reality and 3D interaction10. Physical controls, Sensors and special devices11. Paper printing and scanning12. Memory, Processing and networks13. The Interaction: Models of interaction14. Frameworks and HCI15. Ergonomics16. Interaction styles17. Elements of the WIMP interfaces18. Interactivity and Context of interaction19. Usability Paradigm and Principles: Introduction20. Paradigms for interaction21. Interaction Design Basics: What is design22. Process of design and User focus23. Navigation design24. Screen design and layout25. Iteration and prototyping26. HCI in Software Process: Software life cycle27. Usability engineering28. Iterative design and prototyping29. Design rationale30. Design rules and Guidelines31. Golden rules and heuristics32. HCI patterns33. Evaluation techniques and methods34. Task analysis35. Universal design36. User support systems37. Computer Supported Cooperative Work38. Groupware systems39. Implementation of synchronous groupware40. Ubiquitous computing41. History of Computer Graphics42. Graphics architectures and software43. Imaging and vision: Pinhole camera, Human vision, Synthetic camera44. Modeling vs. rendering45. OpenGL Architecture46. Displaying simple two-dimensional geometric objects47. Positioning systems and windowed environment48. Color perception and models49. RGB, CMY, HLS color models50. Color transformations51. Color in OpenGL: RGB and indexed color52. Input: Network environment and client-server computing53. Input measures: event, sample and request input54. Using callbacks and picking55. Affine transformations: translation, rotation, scaling, shear56. Homogeneous coordinates and concatenation57. Current transformation and matrix stacks58. Three Dimensional Graphics: Classical viewing59. Specifying views in 3D60. Affine transformation in 3D61. Projective transformations62. Ray tracing63. Shading: Illumination and surface modeling64. Phong shading model65. Polygon shading66. Rasterization: Line drawing via Bresenham's algorithm67. Clipping and polygonal fill68. BitBlt operations69. Hidden surface removal (z buffer)70. Discrete Techniques: Buffers71. Reading and writing bitmaps and pixel maps72. Texture mapping73. Compositing
    COMP3145›Devices for virtual reality and 3D interaction
    HCI & Computer GraphicsTopic 9 of 73

    Devices for virtual reality and 3D interaction

    4 minread
    612words
    Beginnerlevel

    Devices for Virtual Reality (VR) and 3D Interaction

    Definition: VR and 3D interaction devices are hardware systems that allow users to interact with digital environments in three dimensions, creating immersive experiences. These devices track user movement, display 3D visuals, and provide input/output channels for natural interaction.

    They work together to simulate presence, motion, and real-world actions inside virtual spaces.


    1. Visual Display Devices

    a. Head-Mounted Displays (HMDs)

    Definition: HMDs are wearable devices with screens placed close to the eyes to provide stereoscopic 3D visuals.

    Features:

    • 3D depth perception
    • Wide field of view
    • Motion tracking
    • Immersive display

    Examples:

    • Oculus Quest / Meta Quest
    • HTC Vive
    • PlayStation VR

    b. CAVE Systems (Cave Automatic Virtual Environment)

    Definition: A room or cube where images are projected on multiple walls, floor, and ceiling to immerse users without headsets.

    Used in scientific visualization, training, and design.


    c. 3D Monitors and Stereoscopic Displays

    Definition: Screens that use special glasses or lens technologies to show depth.

    Used in simulations, medical fields, and 3D modeling.


    2. Tracking Devices

    Tracking devices determine the position, orientation, and movement of the user in 3D space.

    a. Motion Trackers (6DOF Trackers)

    Definition: Devices that track six degrees of freedom—three positions (x,y,z)(x, y, z)(x,y,z) and three rotations (pitch, yaw, roll).

    Types:

    • Infrared tracking
    • Magnetic tracking
    • Optical tracking
    • Inside-out tracking (built into VR headsets)

    b. Hand Tracking / Gesture Tracking

    Definition: Sensors that detect hand movement without controllers.

    Examples:

    • Leap Motion
    • Camera-based hand tracking in VR headsets

    c. Body Tracking / Full-Body Tracking

    Used for animations, VR games, and simulations. Devices include:

    • Inertial Measurement Units (IMUs)
    • Motion capture suits (e.g., OptiTrack, Xsens)

    3. Input and Interaction Devices

    a. VR Controllers

    Definition: Handheld devices used to interact with objects in 3D worlds.

    Features:

    • Buttons
    • Trigger
    • Thumbsticks
    • Haptic feedback
    • 6DOF tracking

    Examples:

    • Oculus Touch controllers
    • Vive Wand
    • Valve Index controllers (finger tracking)

    b. Data Gloves (Wired or Wireless)

    Definition: Gloves with sensors to detect hand movement, finger bending, and gestures.

    Uses:

    • Manipulating objects in VR
    • Training simulations
    • CAD and virtual prototyping

    c. Haptic Devices

    Definition: Devices that provide tactile feedback (vibration, force, pressure) to simulate touch.

    Examples:

    • Haptic gloves
    • Force-feedback joysticks
    • Vibration vests

    Used to create realistic interaction with virtual objects.


    d. 3D Mice / Space Mice

    Definition: Specialized input devices allowing movement in 3D environments (rotate, pan, zoom).

    Used in CAD, 3D modeling, and engineering work.


    4. Locomotion Devices

    These devices allow users to move naturally inside virtual environments.

    a. VR Treadmills

    Definition: Omnidirectional treadmills that allow walking or running in any direction.

    Examples:

    • Virtuix Omni
    • Kat Walk VR

    b. Locomotion Platforms

    Platforms where users slide their feet or use sensors to simulate movement.


    c. Room-scale Tracking

    Users walk physically in real space, mapped into VR space.

    Used in high-end VR systems.


    5. Auditory and Sensory Devices

    a. 3D Spatial Audio Systems

    Provide immersive audio by simulating sound direction and distance.

    Examples:

    • Spatial headphones
    • Surround sound systems

    b. Smell and Temperature Devices (Multisensory VR)

    Experimental devices that simulate:

    • Smells
    • Heat and cold
    • Wind

    Used in research and immersive training.


    Summary Table

    Device Type Examples Purpose
    Display devices HMDs, CAVE Visual immersion
    Tracking devices Motion trackers, hand tracking Detect movement and gestures
    Interaction devices Controllers, data gloves Allow interaction with virtual objects
    Locomotion devices VR treadmills, room-scale Enable movement within VR
    Sensory devices Haptics, spatial audio Provide tactile and auditory realism

    Relevance in HCI

    These devices support:

    • Immersive learning
    • Medical and military training
    • 3D modeling and design
    • Gaming and entertainment
    • Remote collaboration
    • Simulation and visualization

    VR and 3D interaction devices greatly enhance user experience, engagement, realism, and interactivity.

    Previous topic 8
    Display devices
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    Physical controls, Sensors and special devices

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      Est. reading time4 min
      Word count612
      Code examples0
      DifficultyBeginner