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    Area of Science:

    • Optics
    • Imaging Science
    • Computational Imaging

    Background:

    • Single-pixel imaging (SPI) is challenged by high frame rate tracking of fast-moving objects.
    • Limitations include spatial light modulator (SLM) modulation frequency and pattern count.

    Purpose of the Study:

    • To develop a complementary single-pixel object tracking approach for ultrafast target tracking.
    • To enable high frame rate tracking with reduced pattern requirements.

    Main Methods:

    • Utilizes a digital micromirror device (DMD) with complementary patterns.
    • Employs two single-pixel detectors to measure four intensities.
    • Calculates zero-order and first-order geometric moments to determine object centroid.

    Main Results:

    • Successfully tracked fast-moving objects at frame rates up to 11.1 kHz.
    • Demonstrated accurate tracking of objects with changing size and high speeds (41.8 kilopixel/s).
    • Achieved low root mean squared errors (0.3636 transverse, 0.3640 axial pixels).

    Conclusions:

    • The proposed complementary single-pixel tracking method is effective for ultrafast target tracking.
    • Offers a solution to the limitations of conventional SPI for high-speed applications.