Fig. 1From: A variant of the Hough Transform for the combined detection of corners, segments, and polylinesRelative position p of an image point e to the line l(d,θ). The relative position p is computed by determining the y-coordinate of the point e in a coordinate system local to the line l (dotted red lines). It is considered that the image reference system (dotted blue lines) is situated at the image center (O)Back to article page