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Related Concept Videos

Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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Related Experiment Video

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Simultaneously Capturing Real-time Images in Two Emission Channels Using a Dual Camera Emission Splitting System: Applications to Cell Adhesion
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Event-based dual photography for transparent scene reconstruction.

Xiaomeng Liu, Joshua D Rego, Suren Jayasuriya

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    |March 1, 2023
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    This study introduces a new dual photography system using a micro-electro mechanical system (MEMS) projector and event camera for 3D scanning. It enables efficient depth extraction and reconstruction in complex line-of-sight (LoS) and non-line-of-sight (NLoS) scenes.

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    Area of Science:

    • Optics and Photonics
    • Computer Vision
    • Robotics

    Background:

    • Light transport is crucial for imaging, with dual photography offering advanced applications.
    • Existing dual photography methods face challenges like long acquisition times and large data requirements.
    • 3D scanning in non-line-of-sight (NLoS) scenarios remains a significant hurdle in computer vision.

    Purpose of the Study:

    • To develop a novel hardware setup for efficient dual photography.
    • To enable 3D scanning in both line-of-sight (LoS) and NLoS scenes.
    • To overcome limitations of current dual photography techniques.

    Main Methods:

    • A system combining a flying-spot micro-electro mechanical system (MEMS) modulated projector with an event camera was designed.
    • The setup facilitates dual photography for capturing light transport information.
    • Event-based light transport was utilized for data acquisition and processing.

    Main Results:

    • The proposed system successfully achieved depth extraction from LoS scenes.
    • 3D reconstruction of objects in NLoS scenes was accomplished.
    • The novel approach demonstrated improved efficiency and data handling compared to traditional methods.

    Conclusions:

    • The integrated MEMS projector and event camera system offers a viable solution for advanced dual photography.
    • This technology enables robust 3D scanning in challenging LoS and NLoS environments.
    • The use of event light transport opens new avenues for real-time 3D reconstruction.