Line Segment Detection The first part of the deep lane feature extraction is to detect the straight lines in the road image in order to determine where the lane lines may locate.
Since the three methods are all parameter-free, and there is no large difference in their accuracy, this paper chooses the fastest method, EDLines, as the
line segment detecting method.
First, the
line segment is the basic construction unit for a polygon.
Two points [p.sub.1], [p.sub.2] [member of] P see each other if and only if the
line segment [[bar.p].sub.1][[bar.p].sub.2] is completely contained in P.
Due to various reasons is the perspective projection of a
line segment of the 3D scene onto the 2D image not congruent with the
line segment detected in the image.
The end points of the various
line segment sequences in the [sigma]-boundary of r(i) form the vertices of an inflated copy of r(i).
The end points of the various
line segment sequences in the [sigma] -boundary of r (i) form the vertices of an inflated copy of r(i).
The SJRA completed an extensive review of the collection system, determining and scoring the "likelihood of failure" and "consequence of failure" of each
line segment.
In Figure 2, the right-hand side trapezium portion of the rectangle strip is folded over the
line segment PQ to form a crease along the
line segment PQ.
On expanding the portability to the landline segment, Al Ghanim said: "We have finished with mobile, hopefully we will get to the fixed
line segment in 2014, and finish it as it is a long-standing project.''
where m, n [member of] {1,2} denotes one of the two end points of a
line segment and [x.sup.m.sub.i], [y.sup.m.sub.i] denote the horizontal and vertical ordinates of end point m of
line segment [l.sub.i], as shown in Figure 4(a).