Detecting Objects Based on Reflectivity Fingerprints

    公开(公告)号:US20190318177A1

    公开(公告)日:2019-10-17

    申请号:US16456942

    申请日:2019-06-28

    Abstract: A LIDAR system for detecting a vehicle may include a processor configured to: scan a field of view (FOV) by controlling movement of at least one deflector at which at least one light source is directed; receive from at least one sensor signals indicative of light reflected from a particular object in the FOV; detect, based on time of flight in the received signals, portions of the particular object in the FOV that are similarly spaced from the light source; determine, based on the detected portions, at least a first portion having a first reflectivity corresponding to a license plate, and at least two additional spaced-apart portions corresponding to locations on the particular object other than a location of the first portion; and based on a spatial relationship and a reflectivity relationship between the first portion and the at least two additional portions, classify the particular object as a vehicle.

    LIDAR SYSTEMS AND METHODS WITH INTERNAL LIGHT CALIBRATION

    公开(公告)号:US20210025997A1

    公开(公告)日:2021-01-28

    申请号:US17045579

    申请日:2019-04-08

    Abstract: The present disclosure relates to systems and methods for calibrating LIDAR systems using internal light. In one implementation, at least one processor of a LIDAR system may control at least one light source; receive from a group of detectors a first plurality of input signals associated with light projected by the at least one light source and reflected from an object external to the LIDAR system; determine based on the first plurality of input signals a distance to the object; receive from the group of detectors a second plurality of input signals associated with light projected internal to the LIDAR system by the at least one light source; determine based on the second plurality of input signals that there is performance degradation in at least one detector of the group of detectors; and initiate a remedial action in response to the determined performance degradation.

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