@inproceedings{nonparametricstructurebasedcalibrationof,
  title = {Non-Parametric Structure-Based Calibration of Radially Symmetric Cameras},
  author = {Federico Camposeco and Torsten Sattler and Marc Pollefeys},
  year = {2015},
  booktitle = {ICCV 2015 12},
  url = {http://openaccess.thecvf.com/content_iccv_2015/html/Camposeco_Non-Parametric_Structure-Based_Calibration_ICCV_2015_paper.html},
}