@Article{vpoint03,
  author =   {A. Almansa and A. Desolneux and S. Vamech},
  title =    {Vanishing Points Detection without Any A Priori Information},
  journal =  PAMI,
  volume = "25",
  year = "2003",
  number = "4",
  month = "april",
  pages = "502-507"
}