Extend point descriptors for line, curve and region matching

Feature matching plays an important role in many applications, including 3D reconstruction, object recognition and video understanding. Point matching has made great progress recently, while it has made little progress in the fields of line and curve matching. By computing statistics of point descriptors constructed at each edge points, this paper develops a novel method for extending point descriptors to construct descriptors for lines, curves and regions. Experiment results exhibit that our method can perform good and robust on real images.