Road monitoring method for a vehicle and a system thereof

  • US 6,842,189 B2
  • Filed: 12/28/2001
  • Issued: 01/11/2005
  • Est. Priority Date: 05/25/2001
  • Status: Active Grant
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First Claim
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1. A road monitoring method for a vehicle using a camera, comprising:

  • receiving a picture signal from said camera;

    detecting a target from said picture signal;

    calculating a horizontally estimated distance from said vehicle to said target;

    calculating variables including a vertical angle of said target on a circumference and a curvature radius of said circumference; and

    calculating an actual distance from said vehicle to said target based on said vertical angle and said curvature radius.

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