Local positioning apparatus, and a method therefor

  • US 6,091,833 A
  • Filed: 08/27/1997
  • Issued: 07/18/2000
  • Est. Priority Date: 08/28/1996
  • Status: Expired due to Term
  • ×
    • Pin Icon | RPX Insight
    • Pin
First Claim
Patent Images

1. A local positioning apparatus for use in detecting a local position of a subject, capable of advancing in a direction relating to a lane in a local area, based on a digital image signal representing a local image of an area in an advancing direction of the subject, said apparatus comprising:

  • a first image signal generator operable to extract a high spatial frequency component from the digital image signal, and to produce an edge signal based on the high spatial frequency component;

    a contour extractor operable to extract a contour of a lane based on the edge signal, and to generate road contour data indicative of the contour of the lane;

    a second image signal generator operable to extract a low spatial frequency component from the digital image signal, and to produce a luminance signal based on the low spatial frequency component;

    a lane area extractor operable to extract an area of the lane based on the luminance signal, and to generate road region data indicative of the area of the lane; and

    a lane detector operable to detect a position of the lane based on the road contour data and the road region data, and to produce a lane detection signal indicative of the position of the lane.

View all claims
  • 1 Assignment
    ×
    ×

    Thank you for your feedback

    ×
    ×