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System and method of alerting a driver that visual perception of pedestrian may be difficult

  • US 9,070,023 B2
  • Filed: 09/23/2013
  • Issued: 06/30/2015
  • Est. Priority Date: 09/23/2013
  • Status: Active Grant
First Claim
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1. A pedestrian perception alert system configured to issue a warning in real-time when driver visual perception of a pedestrian is difficult, the pedestrian perception alert system comprising:

  • a video camera configured to capture video image;

    an alert for issuing the warning;

    a processor in electrical communication with the video camera;

    a Pedestrian Detection Unit (“

    PDU”

    ) configured to analyze the video image to detect the pedestrian;

    a Global Clutter Analysis Unit (“

    GCAU”

    ) configured to generate a global clutter score, the global clutter score measuring the clutter of the entire video image; and

    a Local Pedestrian Clutter Analysis Unit (“

    LPCAU”

    ) configured to generate a local pedestrian clutter score, the local pedestrian clutter score measuring the clutter of each of the pedestrians detected in the video image, wherein when the PDU detects a pedestrian in the video image the processor initiates both the GCAU and the LPCAU, the processer processes the global clutter score and local pedestrian clutter score so as to generate a pedestrian detection score, and processor further actuating the alert when the pedestrian detection score is outside of a predetermined threshold so as to warn a driver that it is difficult to visually perceive a pedestrian.

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