@inproceedings{aglobalapproachforthedetectionof,
  title = {A Global Approach for the Detection of Vanishing Points and Mutually Orthogonal Vanishing Directions},
  author = {Michel Antunes and Joao P. Barreto},
  year = {2013},
  booktitle = {CVPR 2013 6},
  url = {http://openaccess.thecvf.com/content_cvpr_2013/html/Antunes_A_Global_Approach_2013_CVPR_paper.html},
}