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Updated: Apr 10, 2026

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Mask Balancing: Perception-Driven Dynamic Visibility Enhancement for Occlusion-Capable Optical See-Through

Yan Zhang, Rundong Chu, Qingtai Dong

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    Summary
    This summary is machine-generated.

    This study introduces a novel mask balancing method to enhance real-scene visibility in occlusion-capable optical see-through head-mounted displays (OC-OSTHMDs). The technique improves brightness by blending polarized light components, overcoming previous limitations.

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    Area of Science:

    • Optics
    • Human-Computer Interaction
    • Display Technology

    Background:

    • Poor real-scene visibility in occlusion-capable optical see-through head-mounted displays (OC-OSTHMDs) limits practical use.
    • Current methods focus on spatial light modulator (SLM) transmittance, reaching optimization limits.
    • Pixelated occlusion typically halves real-scene light power due to polarization.

    Purpose of the Study:

    • To propose and validate a mask balancing method for improving real-scene brightness in OC-OSTHMDs.
    • To overcome the limitations of existing transmittance-focused strategies.
    • To enhance the practical applicability of OC-OSTHMDs through improved visual fidelity.

    Main Methods:

    • A mask balancing method using polarization blending to improve real-scene brightness.
    • Blending s-polarized (occlusion) and p-polarized (raw view) light components.
    • Modulating the cross-angle between a polarizing beam splitter and a linear polarizer for dynamic blending.
    • Implementing a perception-driven approach for real-time cross-angle optimization.

    Main Results:

    • A benchtop prototype was successfully constructed and tested.
    • User studies with 12 participants quantified virtual object visibility thresholds.
    • The proposed method demonstrated improved real-scene visibility while maintaining virtual object appearance.

    Conclusions:

    • The mask balancing method offers a robust and versatile solution for OC-OSTHMDs.
    • This approach effectively enhances real-scene visibility without compromising virtual object quality.
    • The findings represent a significant advancement towards practical OC-OSTHMD development.