×

Method and system for detecting signal color from a moving video platform

  • US 8,233,662 B2
  • Filed: 07/31/2008
  • Issued: 07/31/2012
  • Est. Priority Date: 07/31/2008
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting a color of a signal light from a moving vehicle comprising:

  • capturing an image from a camera mounted on the moving vehicle;

    extracting candidate regions in the image that contain a light region based on a database comprising locations of signal structures along railway tracks;

    classifying the candidate regions as a signal light region or a non-signal light region; and

    identifying the color of the signal light region;

    wherein extracting candidate regions in the image that contain a light region comprises mapping a set of measurements in world coordinates to a set of measurements in image coordinates based on a projection matrix.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×