Patent ID: 6747576
Filing Date: 2004-06-08
Classification: G01S,G06K,G08G

Abstract:
A process for real-time wire detection for an aircraft, said process comprising:scanning of a field of view ahead of the aircraft by means of a range image sensor; generating a set of measurement points, using information output by the range image sensor and information output by a navigation system as input, a measurement point being defined by its three position coordinates in a terrestrial coordinate system; eliminating from the set of measurement points those measurement points from the point set which correspond to ground; detecting horizontal lines within the set of measurement points, employing a Hough transform; and detecting slack wires within vertical planes which contain a detected horizontal line, employing a Hough transform; wherein execution of each Hough transform is performed in two stages, the first stage being a discrete Hough transform, and the second being a fuzzy Hough transform.