The present technology pertains to determining whether traffic signal cameras of an AV are miscalibrated. One technique for determining if a given traffic signal camera is miscalibrated includes obtaining an image from a traffic signal camera, marking the location of a traffic signal in the image with a bounding box, and determining if the light sources of the traffic signal are within the bounding box. If not, an alternate reason check is performed to determine whether an alternate reason exists for why the light source of the traffic signal is not within the bounding box. If no such reason exists, then the traffic signal camera may be miscalibrated. An additional calibration check may be performed using images from two traffic signal cameras of the AV each having four common light sources, and performing a homographic computation using the location of the light sources in the images.


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    Title :

    CAMERA CALIBRATION FOR UNDEREXPOSED CAMERAS USING TRAFFIC SIGNAL TARGETS


    Contributors:

    Publication date :

    2024-01-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G06V




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