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    This study introduces a novel modular projector-camera (procam) system overcoming limitations of coaxial designs. The system enables dynamic lens adjustments and wide-angle projection mapping with reduced crosstalk.

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    Area of Science:

    • Computer Vision
    • Optics and Photonics
    • Robotics

    Background:

    • Conventional coaxial projector-camera (procam) systems face limitations in dynamic lens adjustments (zoom, focus) and wide-angle projection mapping.
    • Existing systems struggle with online changes to lens settings and wide-angle projection, hindering adaptability.
    • Technical challenges include crosstalk between camera and projector pixels, affecting image quality.

    Purpose of the Study:

    • To propose and validate a modular monocular procam system architecture.
    • To address limitations of coaxial procam systems, enabling online lens adjustments and wide-angle projection.
    • To mitigate crosstalk between camera and projector pixels.

    Main Methods:

    • Development of a modular procam system based on relay optics.
    • Design of guidelines to overcome restrictions of conventional systems.
    • Implementation and testing of a crosstalk reduction technique.
    • Experimental validation of dynamic alignment with changing zoom and focus.
    • Radiometric compensation through pixel-wise color control.

    Main Results:

    • Successful reduction of crosstalk between camera and projector pixels.
    • Accurate alignment of projected images on moving surfaces during zoom and focus changes.
    • Effective radiometric compensation, visually concealing surface texture.
    • Demonstration of modular architecture's expandability for high dynamic range projection.

    Conclusions:

    • The proposed modular procam system effectively overcomes limitations of coaxial designs.
    • The system supports dynamic lens adjustments and wide-angle projection mapping.
    • The developed techniques enable robust alignment, radiometric compensation, and system expandability.