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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
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Updated: Apr 1, 2026

Controlled Rotation of Human Observers in a Virtual Reality Environment
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Semantic Anchors: How Object Familiarity and Rotational Context Shape Rotation Perception in VR.

Alston Lantian Xu, Pingchuan Ke, Alvaro Cassinelli

    IEEE Transactions on Visualization and Computer Graphics
    |March 30, 2026
    PubMed
    Summary
    This summary is machine-generated.

    Semantic Anchors stabilize virtual reality navigation by leveraging cognitive priors, expanding explorable space. Familiar objects significantly alter redirected walking thresholds, demonstrating a dynamic interplay between perception and scene plausibility.

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    Area of Science:

    • Virtual Reality
    • Human-Computer Interaction
    • Cognitive Science

    Background:

    • Redirected Walking (RDW) is key for virtual world navigation but relies on fixed perceptual thresholds.
    • Understanding the cognitive factors influencing RDW is crucial for enhancing immersion and usability.

    Purpose of the Study:

    • To introduce and investigate the concept of Semantic Anchors for stabilizing self-motion perception in RDW.
    • To determine how scene semantics and object familiarity influence perceptual thresholds in virtual rotations.

    Main Methods:

    • A psychophysical experiment with 22 participants judging virtual rotations.
    • Manipulation of object familiarity (familiar vs. arbitrary), object size congruency, and rotational reference frames.
    • Analysis of how these factors affect the perception of virtual rotations and redirection gains.

    Main Results:

    • Scene semantics fundamentally alter spatial cue integration, not just modulate thresholds.
    • Violating canonical object size significantly expanded the range of imperceptible redirection (up to 30% gains).
    • Familiarity inverted geometric dependence; semantic stability dominated over geometric frames for familiar objects.

    Conclusions:

    • RDW thresholds are dynamically co-constructed by sensory input and cognitive expectations (scene plausibility).
    • Semantic Anchors offer a novel principle for designing more effective and immersive RDW systems.
    • Leveraging cognitive priors can expand the explorable space in virtual environments.