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    This study introduces a novel Fourier single-pixel imaging (FSI) method for real-time, high-quality full-color imaging. It utilizes a complex illumination strategy with a red, green, blue, and white (RGBW) light-emitting diode (LED) to enhance image quality and practicability.

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    Area of Science:

    • Optics and Photonics
    • Computational Imaging

    Background:

    • Single-pixel imaging (SPI) traditionally faces challenges in achieving high-quality, real-time full-color image reconstruction.
    • Existing Fourier single-pixel imaging (FSI) methods require further optimization for practical applications.

    Purpose of the Study:

    • To develop a novel single-pixel imaging method capable of real-time, high-quality full-color image reproduction.
    • To enhance the signal-to-noise ratio (SNR) in single-pixel measurements for improved imaging performance.

    Main Methods:

    • Implementation of a 3-step phase-shifting structured-illumination-based Fourier single-pixel imaging (FSI) technique.
    • Utilization of time-division-multiplexing illumination with a red, green, blue, and white (RGBW) 4-chip light-emitting diode (LED).
    • Introduction of a novel "complex illumination" strategy, lighting two LED chips simultaneously to double illumination intensity.

    Main Results:

    • Demonstrated successful reproduction of high-quality full-color images for both static and dynamic scenes.
    • Achieved improved signal-to-noise ratio (SNR) in single-pixel measurements due to enhanced illumination intensity.
    • Enabled real-time full-color imaging by integrating an adaptive real-time FSI approach.

    Conclusions:

    • The proposed method significantly enhances the practicability of single-pixel imaging for real-time, full-color applications.
    • The complex illumination strategy offers a viable approach to boost SNR and image fidelity in FSI.
    • This advancement holds potential for various applications requiring efficient and high-quality color imaging.