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Related Experiment Video

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Optogenetic Stimulation of the Auditory Nerve
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Real-Time Retinal Processing for High-Resolution Optogenetic Stimulation Device.

Nizar El Zarif, Leila Montazeri, Mohamad Sawan

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |November 17, 2018
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    Summary

    This study introduces Circular Distortion and Motion Compensation (CDMC), a real-time retinal image processing technique. The CDMC system achieves 12 FPS on embedded hardware, emulating biological retinal functions for optogenetic devices.

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    Area of Science:

    • Biomedical Engineering
    • Computational Neuroscience
    • Image Processing

    Background:

    • The retina's complex cellular arrangement, particularly the ring structure of bipolar and ganglion cells, presents challenges for accurate image processing.
    • Existing methods may struggle with real-time compensation for geometric distortions and motion inherent in retinal imaging.

    Purpose of the Study:

    • To develop and evaluate a novel image processing technique, Circular Distortion and Motion Compensation (CDMC), for real-time retinal analysis.
    • To enable geometric compensation for the specific cellular arrangement in the human retina.
    • To create an efficient algorithm suitable for embedded and mobile platforms.

    Main Methods:

    • Implementation of the Circular Distortion and Motion Compensation (CDMC) algorithm.
    • Utilizing a Raspberry Pi 3 embedded platform for real-time processing.
    • Capturing live video at $640\times 480$ resolution with webcam integration.

    Main Results:

    • The CDMC system achieved a processing speed of 12 frames per second.
    • The algorithm successfully emulates biological retinal processes, including motion estimation and temporal filtering.
    • Geometric compensation for the radial shift of retinal cells was effectively performed.

    Conclusions:

    • The CDMC technique offers efficient, real-time retinal image processing on embedded hardware.
    • The system's ability to compensate for geometric distortions and emulate biological functions makes it ideal for advanced applications.
    • This technology is well-suited for high-resolution optogenetic stimulation devices targeting the retina.