| 摘要 |
A method and device for detecting an overhead cable from an aerial vessel, for instance from a helicopter in motion, and specifically for use in a landing preparing procedure. The method comprises providing (220), from a camera arranged in the aerial vessel, a plurality of images of an area beneath the aerial vessel when the aerial vessel is in motion; detecting (230) lines in the images; determine (240) if the lines represent lines at ground level or lines at a level above ground level; and determine (250) if a line at a level above ground level represents a possible overhead cable. Step (230) of detecting lines in the images may comprise a modified SUSAN algorithm. Step (240) of determining if the lines represent lines at ground level or lines above ground level may comprise parallax calculation. |
