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Stroboscopic effect: contrast threshold function and dependence on illumination level.

Małgorzata Perz, Dragan Sekulovski, Ingrid Vogels

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    Summary
    This summary is machine-generated.

    The stroboscopic visibility measure (SVM) was validated and extended through perception experiments. This research provides a standard observer function to normalize SVM for general lighting applications.

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    Area of Science:

    • Lighting Science
    • Perceptual Science
    • Human Factors

    Background:

    • The stroboscopic visibility measure (SVM) quantifies stroboscopic effect visibility.
    • Previous SVM definitions were limited by frequency range and participant numbers.
    • Validation and extension are needed for broader application.

    Purpose of the Study:

    • To validate and extend the stroboscopic visibility measure (SVM).
    • To establish a standard observer function for SVM normalization.
    • To assess SVM's applicability across different illumination levels.

    Main Methods:

    • Conducted five perception experiments measuring light waveform visibility thresholds at various frequencies.
    • Aggregated results from two independent laboratories.
    • Fitted a power function to establish a contrast threshold function for a standard observer.
    • Performed an additional experiment to determine illumination level dependency.

    Main Results:

    • Validated SVM across a wider range of frequencies and participants.
    • Developed a power function-based contrast threshold for a standard observer.
    • Demonstrated SVM's validity extends to various illumination levels.

    Conclusions:

    • The study successfully validated and extended the stroboscopic visibility measure (SVM).
    • A normalized SVM, using the standard observer function, is applicable to general lighting.
    • SVM's utility is confirmed for diverse illumination conditions.