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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

Updated: Mar 21, 2026

Lensless Fluorescent Microscopy on a Chip
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Compact all-CMOS spatiotemporal compressive sensing video camera with pixel-wise coded exposure.

Jie Zhang, Tao Xiong, Trac Tran

    Optics Express
    |May 4, 2016
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a low-power CMOS image sensor using temporal compressive sensing and coded exposure. It achieves higher resolution and frame rates while significantly reducing power consumption and data readout speed.

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    Area of Science:

    • Electrical Engineering
    • Computer Vision
    • Image Processing

    Background:

    • Traditional image sensors face limitations in simultaneously increasing resolution and frame rates.
    • Existing compressive sensing techniques often require complex optical components or high power consumption.

    Purpose of the Study:

    • To develop a low-power, compact image sensor for enhanced video acquisition.
    • To enable simultaneous increases in video resolution and frame rate using temporal compressive sensing.

    Main Methods:

    • Implementation of an all-CMOS temporal compressive sensing system with pixel-wise coded exposure.
    • Electronic modulation of individual photo-diode exposure without external optics.
    • Reconstruction of high-frame-rate videos from lower-sampling-rate coded images.

    Main Results:

    • A prototype 127x90 pixel sensor successfully reconstructed 100 fps videos from 5 fps coded images.
    • Achieved a 20x reduction in data readout speed.
    • Demonstrated ultra-low power consumption of only 14μW for 100 fps video output.

    Conclusions:

    • The proposed pixel-wise coded exposure method offers a significant advancement in low-power, high-performance image sensing.
    • This technology enables compact and efficient video systems with simultaneous resolution and frame rate improvements.
    • The electronic modulation approach reduces size and power compared to optical-based implementations.