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Landmark recognition device and landmark recognition method using a database storing landmark extraction information

  • US 10,509,971 B2
  • Filed: 03/28/2016
  • Issued: 12/17/2019
  • Est. Priority Date: 08/28/2015
  • Status: Active Grant
First Claim
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1. A landmark recognition device configured to recognize plural kinds of road marks drawn on a road and/or plural kinds of road signs installed on a roadside as landmarks, comprising:

  • a camera mounted on a moving body for capturing an image surrounding the moving body; and

    a processor configured to process the captured image to recognize a landmark, whereinthe processor includesa database storing landmark extraction information associated with landmark determination condition information, the landmark extraction information identifying a region including a landmark of the captured image for each kind of the landmarks, and allowing right-opposite positioning of the landmark, the landmark determination condition information determining landmark pattern information as the landmark,a segmentation processor configured to set a plurality of segmentation lines with respect to the region including the landmark of the captured image in a direction parallel to the landmark from a direction right opposite to the landmark, and determine a distance between intersections of the plurality of segmentation lines and a boundary of the landmark, where the plurality of segmentation lines are parallel with respect to one another,a pattern extraction processor configured to obtain the landmark pattern information that represents a characteristic of the pattern of the landmark as numerical value information, in response to a distance between the intersections determined for each of the plurality of segmentation lines, anda database comparison processor configured to compare the landmark pattern information extracted in the pattern extraction processor with the landmark determination condition information registered in the database to identify the kind of the landmark.

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