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FPGA-Based Data Compression Drives Brain Imaging Performance Gains

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To help broaden the use of single-photon avalanche diode (SPAD) cameras for multispeckle diffuse correlation spectroscopy (DCS), researchers at the University of Edinburgh developed a data compression scheme for a large-pixel-count SPAD camera using a field-programmable gate array (FPGA). The camera system’s large sensor array enabled a substantial signal-to-noise ratio (SNR) gain over a single-pixel system: The researchers demonstrated an SNR gain of 110, with respect to single-pixel multispeckle DCS, using half of the 192 × 128 SPAD array. The pixel active fill factor was...Read full article

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    Published: May 2023
    Glossary
    signal-to-noise ratio
    The ratio of the power in a desired signal to the undesirable noise present in the absence of a signal.
    Research & TechnologyeducationEuropeUniversity of Edinburghspectroscopydiffuse correlation spectroscopyImagingbrain imagingsingle-photon avalanche diodesfield-programmable gate arrayscamerasspeckle patternssignal-to-noise ratioSPAD camerasLight SourcesOpticsSensors & DetectorsTest & MeasurementBiophotonicsmedicalBioScan

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