Yoshihiko Mochizuki Akihiko Torii Atsushi Imiya N-Point Hough transform for line detection. 242-253 2009 20 J. Visual Communication and Image Representation 4 http://dx.doi.org/10.1016/j.jvcir.2009.01.004 db/journals/jvcir/jvcir20.html#MochizukiTI09