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    Area of Science:

    • Optics and Photonics
    • Computational Imaging
    • Single-Photon Detection

    Background:

    • Compressive imaging offers advantages in capturing high-resolution images with fewer measurements.
    • Single-photon imaging is crucial for low-light conditions but faces challenges in speed and sensitivity.
    • Digital micro-mirror devices (DMDs) enable dynamic spatial light modulation for advanced imaging techniques.

    Purpose of the Study:

    • To develop a single-photon compressive imaging system utilizing a DMD for enhanced low-light imaging capabilities.
    • To introduce a multiple micro-mirrors combination imaging method to accelerate image reconstruction and reduce memory usage.
    • To theoretically analyze and experimentally validate the system's signal-to-noise ratio and detection limits.

    Main Methods:

    • A parallel light source was employed to minimize light scattering and improve imaging resolution.
    • A photon counting photomultiplier tube (PMT) with a large photosensitive area was used for efficient light collection.
    • A Field-Programmable Gate Array (FPGA) controlled the DMD and simultaneously counted single-photon pulses.

    Main Results:

    • The proposed micro-mirrors combination imaging method demonstrated suitability for faster imaging in weak-light environments.
    • Theoretical analysis and experimental results confirmed the system's performance.
    • Optimizing combined pixel size and measurement time is key to minimizing Poisson shot noise for high imaging quality.

    Conclusions:

    • The developed single-photon compressive imaging system with DMD and micro-mirrors combination imaging method enables efficient low-light imaging.
    • The system offers a promising approach for applications requiring high sensitivity and reduced acquisition times.
    • Careful parameter selection is essential for achieving optimal imaging quality and minimizing noise.