DEVICE AND METHOD FOR PROCESSING A HISTOGRAM OF ARRIVAL TIMES IN AN OPTICAL SENSOR
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United States of America
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Mar 26, 2020
app pub date -
Sep 26, 2018
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Sep 26, 2018
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Abstract
An embodiment device includes: a plurality of optical emitters configured to emit incident radiation within a field of view of the device; a plurality of optical detectors configured to receive reflected radiation and to generate a histogram based on the incident radiation and the reflected radiation, the histogram being indicative of a number of photon events detected by the plurality of optical detectors over a plurality of time bins, the plurality of time bins being indicative of a plurality of time differences between emission of the incident radiation and reception of the reflected radiation; and a processor configured to iteratively process the histogram by executing an expectation-maximization algorithm to detect a presence of objects located in the field of view of the device.
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