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Horizontal curves are essential in highway and railroad design, ensuring smooth and safe transitions between straight path segments, or tangents. These curves allow vehicles to maintain speed without abrupt changes, minimizing accidents and improving travel efficiency.A horizontal curve is typically defined by its geometric relationship to two tangents that meet at an intersection point (P.I.), where a simple curve is introduced to connect them. The back tangent refers to the initial tangent...
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    Area of Science:

    • Virtual Reality
    • Human-Computer Interaction
    • Computer Graphics

    Background:

    • Redirected walking (RDW) is a technique used in virtual reality (VR) to extend the user's physical space.
    • Existing RDW methods often apply constant gain factors, which can lead to user discomfort.
    • Minimizing discomfort is crucial for immersive and prolonged VR experiences.

    Purpose of the Study:

    • To propose and evaluate a novel redirected walking (RDW) technique utilizing dynamic bending and curvature gains.
    • To investigate the impact of continuously changing gains versus constant gains on user discomfort.
    • To quantify the reduction in perceived discomfort achieved by the proposed dynamic RDW method.

    Main Methods:

    • Developed a novel RDW technique that dynamically adjusts bending and curvature gains.
    • Implemented a method where gain values change continuously rather than abruptly.
    • Conducted experiments to measure user-reported discomfort during RDW with dynamic gains.

    Main Results:

    • The proposed dynamic RDW technique significantly suppresses user discomfort.
    • Discomfort was reduced by up to 16% for bending manipulations.
    • Discomfort was reduced by up to 9% for curvature manipulations.

    Conclusions:

    • Dynamic gain adjustments in RDW are more effective at reducing user discomfort than constant gains.
    • The proposed method offers a more comfortable VR experience by leveraging human perception of continuous change.
    • This technique has the potential to improve the usability and immersion of VR systems.